ImageObserver
, MenuContainer
, Serializable
, EventListener
, Accessible
, CellEditorListener
, ListSelectionListener
, RowSorterListener
, TableColumnModelListener
, TableModelListener
, Scrollable
@JavaBean(defaultProperty="UI", description="A component which displays data in a two dimensional grid.") public class JTable extends JComponent implements TableModelListener, Scrollable, TableColumnModelListener, ListSelectionListener, CellEditorListener, Accessible, RowSorterListener
JTable
is used to display and edit regular two-dimensional tables of cells. See How to Use Tables in The Java Tutorial for task-oriented documentation and examples of using JTable
. The JTable
has many facilities that make it possible to customize its rendering and editing but provides defaults for these features so that simple tables can be set up easily. For example, to set up a table with 10 rows and 10 columns of numbers:
TableModel dataModel = new AbstractTableModel() { public int getColumnCount() { return 10; } public int getRowCount() { return 10;} public Object getValueAt(int row, int col) { return Integer.valueOf(row*col); } }; JTable table = new JTable(dataModel); JScrollPane scrollpane = new JScrollPane(table);
JTable
s are typically placed inside of a JScrollPane
. By default, a JTable
will adjust its width such that a horizontal scrollbar is unnecessary. To allow for a horizontal scrollbar, invoke setAutoResizeMode(int)
with AUTO_RESIZE_OFF
. Note that if you wish to use a JTable
in a standalone view (outside of a JScrollPane
) and want the header displayed, you can get it using getTableHeader()
and display it separately.
To enable sorting and filtering of rows, use a RowSorter
. You can set up a row sorter in either of two ways:
RowSorter
. For example: table.setRowSorter(new TableRowSorter(model))
. autoCreateRowSorter
property to true
, so that the JTable
creates a RowSorter
for you. For example: setAutoCreateRowSorter(true)
. When designing applications that use the JTable
it is worth paying close attention to the data structures that will represent the table's data. The DefaultTableModel
is a model implementation that uses a Vector
of Vector
s of Object
s to store the cell values. As well as copying the data from an application into the DefaultTableModel
, it is also possible to wrap the data in the methods of the TableModel
interface so that the data can be passed to the JTable
directly, as in the example above. This often results in more efficient applications because the model is free to choose the internal representation that best suits the data. A good rule of thumb for deciding whether to use the AbstractTableModel
or the DefaultTableModel
is to use the AbstractTableModel
as the base class for creating subclasses and the DefaultTableModel
when subclassing is not required.
The "TableExample" directory in the demo area of the source distribution gives a number of complete examples of JTable
usage, covering how the JTable
can be used to provide an editable view of data taken from a database and how to modify the columns in the display to use specialized renderers and editors.
The JTable
uses integers exclusively to refer to both the rows and the columns of the model that it displays. The JTable
simply takes a tabular range of cells and uses getValueAt(int, int)
to retrieve the values from the model during painting. It is important to remember that the column and row indexes returned by various JTable
methods are in terms of the JTable
(the view) and are not necessarily the same indexes used by the model.
By default, columns may be rearranged in the JTable
so that the view's columns appear in a different order to the columns in the model. This does not affect the implementation of the model at all: when the columns are reordered, the JTable
maintains the new order of the columns internally and converts its column indices before querying the model.
So, when writing a TableModel
, it is not necessary to listen for column reordering events as the model will be queried in its own coordinate system regardless of what is happening in the view. In the examples area there is a demonstration of a sorting algorithm making use of exactly this technique to interpose yet another coordinate system where the order of the rows is changed, rather than the order of the columns.
Similarly when using the sorting and filtering functionality provided by RowSorter
the underlying TableModel
does not need to know how to do sorting, rather RowSorter
will handle it. Coordinate conversions will be necessary when using the row based methods of JTable
with the underlying TableModel
. All of JTable
s row based methods are in terms of the RowSorter
, which is not necessarily the same as that of the underlying TableModel
. For example, the selection is always in terms of JTable
so that when using RowSorter
you will need to convert using convertRowIndexToView
or convertRowIndexToModel
. The following shows how to convert coordinates from JTable
to that of the underlying model:
int[] selection = table.getSelectedRows(); for (int i = 0; i < selection.length; i++) { selection[i] = table.convertRowIndexToModel(selection[i]); } // selection is now in terms of the underlying TableModel
By default if sorting is enabled JTable
will persist the selection and variable row heights in terms of the model on sorting. For example if row 0, in terms of the underlying model, is currently selected, after the sort row 0, in terms of the underlying model will be selected. Visually the selection may change, but in terms of the underlying model it will remain the same. The one exception to that is if the model index is no longer visible or was removed. For example, if row 0 in terms of model was filtered out the selection will be empty after the sort.
J2SE 5 adds methods to JTable
to provide convenient access to some common printing needs. Simple new print()
methods allow for quick and easy addition of printing support to your application. In addition, a new getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
method is available for more advanced printing needs.
As for all JComponent
classes, you can use InputMap
and ActionMap
to associate an Action
object with a KeyStroke
and execute the action under specified conditions.
Warning: Swing is not thread safe. For more information see Swing's Threading Policy.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans
package. Please see XMLEncoder
.
Modifier and Type | Class | Description |
---|---|---|
protected class |
JTable.AccessibleJTable |
This class implements accessibility support for the JTable class. |
static final class |
JTable.DropLocation |
A subclass of TransferHandler.DropLocation representing a drop location for a JTable . |
static enum |
JTable.PrintMode |
Printing modes, used in printing JTable s. |
JComponent.AccessibleJComponent
Container.AccessibleAWTContainer
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
Modifier and Type | Field | Description |
---|---|---|
static final int |
AUTO_RESIZE_ALL_COLUMNS |
During all resize operations, proportionately resize all columns. |
static final int |
AUTO_RESIZE_LAST_COLUMN |
During all resize operations, apply adjustments to the last column only. |
static final int |
AUTO_RESIZE_NEXT_COLUMN |
When a column is adjusted in the UI, adjust the next column the opposite way. |
static final int |
AUTO_RESIZE_OFF |
Do not adjust column widths automatically; use a horizontal scrollbar instead. |
static final int |
AUTO_RESIZE_SUBSEQUENT_COLUMNS |
During UI adjustment, change subsequent columns to preserve the total width; this is the default behavior. |
protected boolean |
autoCreateColumnsFromModel |
The table will query the TableModel to build the default set of columns if this is true. |
protected int |
autoResizeMode |
Determines if the table automatically resizes the width of the table's columns to take up the entire width of the table, and how it does the resizing. |
protected TableCellEditor |
cellEditor |
The active cell editor object, that overwrites the screen real estate occupied by the current cell and allows the user to change its contents. |
protected boolean |
cellSelectionEnabled |
Obsolete as of Java 2 platform v1.3. |
protected TableColumnModel |
columnModel |
The TableColumnModel of the table. |
protected TableModel |
dataModel |
The TableModel of the table. |
protected Hashtable |
defaultEditorsByColumnClass |
A table of objects that display and edit the contents of a cell, indexed by class as declared in getColumnClass in the TableModel interface. |
protected Hashtable |
defaultRenderersByColumnClass |
A table of objects that display the contents of a cell, indexed by class as declared in getColumnClass in the TableModel interface. |
protected int |
editingColumn |
Identifies the column of the cell being edited. |
protected int |
editingRow |
Identifies the row of the cell being edited. |
protected Component |
editorComp |
If editing, the Component that is handling the editing. |
protected Color |
gridColor |
The color of the grid. |
protected Dimension |
preferredViewportSize |
Used by the Scrollable interface to determine the initial visible area. |
protected int |
rowHeight |
The height in pixels of each row in the table. |
protected int |
rowMargin |
The height in pixels of the margin between the cells in each row. |
protected boolean |
rowSelectionAllowed |
True if row selection is allowed in this table. |
protected Color |
selectionBackground |
The background color of selected cells. |
protected Color |
selectionForeground |
The foreground color of selected cells. |
protected ListSelectionModel |
selectionModel |
The ListSelectionModel of the table, used to keep track of row selections. |
protected boolean |
showHorizontalLines |
The table draws horizontal lines between cells if showHorizontalLines is true. |
protected boolean |
showVerticalLines |
The table draws vertical lines between cells if showVerticalLines is true. |
protected JTableHeader |
tableHeader |
The TableHeader working with the table. |
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
Constructor | Description |
---|---|
JTable() |
Constructs a default JTable that is initialized with a default data model, a default column model, and a default selection model. |
JTable |
Constructs a JTable with numRows and numColumns of empty cells using DefaultTableModel . |
JTable |
Constructs a JTable to display the values in the two dimensional array, rowData , with column names, columnNames . |
JTable |
Constructs a JTable to display the values in the Vector of Vectors , rowData , with column names, columnNames . |
JTable |
Constructs a JTable that is initialized with dm as the data model, a default column model, and a default selection model. |
JTable |
Constructs a JTable that is initialized with dm as the data model, cm as the column model, and a default selection model. |
JTable |
Constructs a JTable that is initialized with dm as the data model, cm as the column model, and sm as the selection model. |
Modifier and Type | Method | Description |
---|---|---|
void |
addColumn |
Appends aColumn to the end of the array of columns held by this JTable 's column model. |
void |
addColumnSelectionInterval |
Adds the columns from index0 to index1 , inclusive, to the current selection. |
void |
addNotify() |
Calls the configureEnclosingScrollPane method. |
void |
addRowSelectionInterval |
Adds the rows from index0 to index1 , inclusive, to the current selection. |
void |
changeSelection |
Updates the selection models of the table, depending on the state of the two flags: toggle and extend . |
void |
clearSelection() |
Deselects all selected columns and rows. |
void |
columnAdded |
Invoked when a column is added to the table column model. |
int |
columnAtPoint |
Returns the index of the column that point lies in, or -1 if the result is not in the range [0, getColumnCount() -1]. |
void |
columnMarginChanged |
Invoked when a column is moved due to a margin change. |
void |
columnMoved |
Invoked when a column is repositioned. |
void |
columnRemoved |
Invoked when a column is removed from the table column model. |
void |
columnSelectionChanged |
Invoked when the selection model of the TableColumnModel is changed. |
protected void |
configureEnclosingScrollPane() |
If this JTable is the viewportView of an enclosing JScrollPane (the usual situation), configure this ScrollPane by, amongst other things, installing the table's tableHeader as the columnHeaderView of the scroll pane. |
int |
convertColumnIndexToModel |
Maps the index of the column in the view at viewColumnIndex to the index of the column in the table model. |
int |
convertColumnIndexToView |
Maps the index of the column in the table model at modelColumnIndex to the index of the column in the view. |
int |
convertRowIndexToModel |
Maps the index of the row in terms of the view to the underlying TableModel . |
int |
convertRowIndexToView |
Maps the index of the row in terms of the TableModel to the view. |
protected TableColumnModel |
createDefaultColumnModel() |
Returns the default column model object, which is a DefaultTableColumnModel . |
void |
createDefaultColumnsFromModel() |
Creates default columns for the table from the data model using the getColumnCount method defined in the TableModel interface. |
protected TableModel |
createDefaultDataModel() |
Returns the default table model object, which is a DefaultTableModel . |
protected void |
createDefaultEditors() |
Creates default cell editors for objects, numbers, and boolean values. |
protected void |
createDefaultRenderers() |
Creates default cell renderers for objects, numbers, doubles, dates, booleans, and icons. |
protected ListSelectionModel |
createDefaultSelectionModel() |
Returns the default selection model object, which is a DefaultListSelectionModel . |
protected JTableHeader |
createDefaultTableHeader() |
Returns the default table header object, which is a JTableHeader . |
static JScrollPane |
createScrollPaneForTable |
Deprecated. |
void |
doLayout() |
Causes this table to lay out its rows and columns. |
boolean |
editCellAt |
Programmatically starts editing the cell at row and column , if those indices are in the valid range, and the cell at those indices is editable. |
boolean |
editCellAt |
Programmatically starts editing the cell at row and column , if those indices are in the valid range, and the cell at those indices is editable. |
void |
editingCanceled |
Invoked when editing is canceled. |
void |
editingStopped |
Invoked when editing is finished. |
AccessibleContext |
getAccessibleContext() |
Gets the AccessibleContext associated with this JTable. |
boolean |
getAutoCreateColumnsFromModel() |
Determines whether the table will create default columns from the model. |
boolean |
getAutoCreateRowSorter() |
Returns true if whenever the model changes, a new RowSorter should be created and installed as the table's sorter; otherwise, returns false . |
int |
getAutoResizeMode() |
Returns the auto resize mode of the table. |
TableCellEditor |
getCellEditor() |
Returns the active cell editor, which is null if the table is not currently editing. |
TableCellEditor |
getCellEditor |
Returns an appropriate editor for the cell specified by row and column . |
Rectangle |
getCellRect |
Returns a rectangle for the cell that lies at the intersection of row and column . |
TableCellRenderer |
getCellRenderer |
Returns an appropriate renderer for the cell specified by this row and column. |
boolean |
getCellSelectionEnabled() |
Returns true if both row and column selection models are enabled. |
TableColumn |
getColumn |
Returns the TableColumn object for the column in the table whose identifier is equal to identifier , when compared using equals . |
Class |
getColumnClass |
Returns the type of the column appearing in the view at column position column . |
int |
getColumnCount() |
Returns the number of columns in the column model. |
TableColumnModel |
getColumnModel() |
Returns the TableColumnModel that contains all column information of this table. |
String |
getColumnName |
Returns the name of the column appearing in the view at column position column . |
boolean |
getColumnSelectionAllowed() |
Returns true if columns can be selected. |
TableCellEditor |
getDefaultEditor |
Returns the editor to be used when no editor has been set in a TableColumn . |
TableCellRenderer |
getDefaultRenderer |
Returns the cell renderer to be used when no renderer has been set in a TableColumn . |
boolean |
getDragEnabled() |
Returns whether or not automatic drag handling is enabled. |
final JTable.DropLocation |
getDropLocation() |
Returns the location that this component should visually indicate as the drop location during a DnD operation over the component, or null if no location is to currently be shown. |
final DropMode |
getDropMode() |
Returns the drop mode for this component. |
int |
getEditingColumn() |
Returns the index of the column that contains the cell currently being edited. |
int |
getEditingRow() |
Returns the index of the row that contains the cell currently being edited. |
Component |
getEditorComponent() |
Returns the component that is handling the editing session. |
boolean |
getFillsViewportHeight() |
Returns whether or not this table is always made large enough to fill the height of an enclosing viewport. |
Color |
getGridColor() |
Returns the color used to draw grid lines. |
Dimension |
getIntercellSpacing() |
Returns the horizontal and vertical space between cells. |
TableModel |
getModel() |
Returns the TableModel that provides the data displayed by this JTable . |
Dimension |
getPreferredScrollableViewportSize() |
Returns the preferred size of the viewport for this table. |
Printable |
getPrintable |
Return a Printable for use in printing this JTable. |
int |
getRowCount() |
Returns the number of rows that can be shown in the JTable , given unlimited space. |
int |
getRowHeight() |
Returns the height of a table row, in pixels. |
int |
getRowHeight |
Returns the height, in pixels, of the cells in row . |
int |
getRowMargin() |
Gets the amount of empty space, in pixels, between cells. |
boolean |
getRowSelectionAllowed() |
Returns true if rows can be selected. |
RowSorter |
getRowSorter() |
Returns the object responsible for sorting. |
int |
getScrollableBlockIncrement |
Returns visibleRect.height or visibleRect.width , depending on this table's orientation. |
boolean |
getScrollableTracksViewportHeight() |
Returns false to indicate that the height of the viewport does not determine the height of the table, unless getFillsViewportHeight is true and the preferred height of the table is smaller than the viewport's height. |
boolean |
getScrollableTracksViewportWidth() |
Returns false if autoResizeMode is set to AUTO_RESIZE_OFF , which indicates that the width of the viewport does not determine the width of the table. |
int |
getScrollableUnitIncrement |
Returns the scroll increment (in pixels) that completely exposes one new row or column (depending on the orientation). |
int |
getSelectedColumn() |
Returns the index of the first selected column, -1 if no column is selected. |
int |
getSelectedColumnCount() |
Returns the number of selected columns. |
int[] |
getSelectedColumns() |
Returns the indices of all selected columns. |
int |
getSelectedRow() |
Returns the index of the first selected row, -1 if no row is selected. |
int |
getSelectedRowCount() |
Returns the number of selected rows. |
int[] |
getSelectedRows() |
Returns the indices of all selected rows. |
Color |
getSelectionBackground() |
Returns the background color for selected cells. |
Color |
getSelectionForeground() |
Returns the foreground color for selected cells. |
ListSelectionModel |
getSelectionModel() |
Returns the ListSelectionModel that is used to maintain row selection state. |
boolean |
getShowHorizontalLines() |
Returns true if the table draws horizontal lines between cells, false if it doesn't. |
boolean |
getShowVerticalLines() |
Returns true if the table draws vertical lines between cells, false if it doesn't. |
boolean |
getSurrendersFocusOnKeystroke() |
Returns true if the editor should get the focus when keystrokes cause the editor to be activated |
JTableHeader |
getTableHeader() |
Returns the tableHeader used by this JTable . |
String |
getToolTipText |
Overrides JComponent 's getToolTipText method in order to allow the renderer's tips to be used if it has text set. |
TableUI |
getUI() |
Returns the L&F object that renders this component. |
String |
getUIClassID() |
Returns the suffix used to construct the name of the L&F class used to render this component. |
boolean |
getUpdateSelectionOnSort() |
Returns true if the selection should be updated after sorting. |
Object |
getValueAt |
Returns the cell value at row and column . |
protected void |
initializeLocalVars() |
Initializes table properties to their default values. |
boolean |
isCellEditable |
Returns true if the cell at row and column is editable. |
boolean |
isCellSelected |
Returns true if the specified indices are in the valid range of rows and columns and the cell at the specified position is selected. |
boolean |
isColumnSelected |
Returns true if the specified index is in the valid range of columns, and the column at that index is selected. |
boolean |
isEditing() |
Returns true if a cell is being edited. |
boolean |
isRowSelected |
Returns true if the specified index is in the valid range of rows, and the row at that index is selected. |
void |
moveColumn |
Moves the column column to the position currently occupied by the column targetColumn in the view. |
protected String |
paramString() |
Returns a string representation of this table. |
Component |
prepareEditor |
Prepares the editor by querying the data model for the value and selection state of the cell at row , column . |
Component |
prepareRenderer |
Prepares the renderer by querying the data model for the value and selection state of the cell at row , column . |
boolean |
print() |
A convenience method that displays a printing dialog, and then prints this JTable in mode PrintMode.FIT_WIDTH , with no header or footer text. |
boolean |
print |
A convenience method that displays a printing dialog, and then prints this JTable in the given printing mode, with no header or footer text. |
boolean |
print |
A convenience method that displays a printing dialog, and then prints this JTable in the given printing mode, with the specified header and footer text. |
boolean |
print |
Prints this table, as specified by the fully featured print method, with the default printer specified as the print service. |
boolean |
print |
Prints this JTable . |
void |
removeColumn |
Removes aColumn from this JTable 's array of columns. |
void |
removeColumnSelectionInterval |
Deselects the columns from index0 to index1 , inclusive. |
void |
removeEditor() |
Discards the editor object and frees the real estate it used for cell rendering. |
void |
removeNotify() |
Calls the unconfigureEnclosingScrollPane method. |
void |
removeRowSelectionInterval |
Deselects the rows from index0 to index1 , inclusive. |
protected void |
resizeAndRepaint() |
Equivalent to revalidate followed by repaint . |
int |
rowAtPoint |
Returns the index of the row that point lies in, or -1 if the result is not in the range [0, getRowCount() -1]. |
void |
selectAll() |
Selects all rows, columns, and cells in the table. |
void |
setAutoCreateColumnsFromModel |
Sets this table's autoCreateColumnsFromModel flag. |
void |
setAutoCreateRowSorter |
Specifies whether a RowSorter should be created for the table whenever its model changes. |
void |
setAutoResizeMode |
Sets the table's auto resize mode when the table is resized. |
void |
setCellEditor |
Sets the active cell editor. |
void |
setCellSelectionEnabled |
Sets whether this table allows both a column selection and a row selection to exist simultaneously. |
void |
setColumnModel |
Sets the column model for this table to columnModel and registers for listener notifications from the new column model. |
void |
setColumnSelectionAllowed |
Sets whether the columns in this model can be selected. |
void |
setColumnSelectionInterval |
Selects the columns from index0 to index1 , inclusive. |
void |
setDefaultEditor |
Sets a default cell editor to be used if no editor has been set in a TableColumn . |
void |
setDefaultRenderer |
Sets a default cell renderer to be used if no renderer has been set in a TableColumn . |
void |
setDragEnabled |
Turns on or off automatic drag handling. |
final void |
setDropMode |
Sets the drop mode for this component. |
void |
setEditingColumn |
Sets the editingColumn variable. |
void |
setEditingRow |
Sets the editingRow variable. |
void |
setFillsViewportHeight |
Sets whether or not this table is always made large enough to fill the height of an enclosing viewport. |
void |
setGridColor |
Sets the color used to draw grid lines to gridColor and redisplays. |
void |
setIntercellSpacing |
Sets the rowMargin and the columnMargin -- the height and width of the space between cells -- to intercellSpacing . |
void |
setModel |
Sets the data model for this table to dataModel and registers with it for listener notifications from the new data model. |
void |
setPreferredScrollableViewportSize |
Sets the preferred size of the viewport for this table. |
void |
setRowHeight |
Sets the height, in pixels, of all cells to rowHeight , revalidates, and repaints. |
void |
setRowHeight |
Sets the height for row to rowHeight , revalidates, and repaints. |
void |
setRowMargin |
Sets the amount of empty space between cells in adjacent rows. |
void |
setRowSelectionAllowed |
Sets whether the rows in this model can be selected. |
void |
setRowSelectionInterval |
Selects the rows from index0 to index1 , inclusive. |
void |
setRowSorter |
Sets the RowSorter . |
void |
setSelectionBackground |
Sets the background color for selected cells. |
void |
setSelectionForeground |
Sets the foreground color for selected cells. |
void |
setSelectionMode |
Sets the table's selection mode to allow only single selections, a single contiguous interval, or multiple intervals. |
void |
setSelectionModel |
Sets the row selection model for this table to selectionModel and registers for listener notifications from the new selection model. |
void |
setShowGrid |
Sets whether the table draws grid lines around cells. |
void |
setShowHorizontalLines |
Sets whether the table draws horizontal lines between cells. |
void |
setShowVerticalLines |
Sets whether the table draws vertical lines between cells. |
void |
setSurrendersFocusOnKeystroke |
Sets whether editors in this JTable get the keyboard focus when an editor is activated as a result of the JTable forwarding keyboard events for a cell. |
void |
setTableHeader |
Sets the tableHeader working with this JTable to newHeader . |
void |
setUI |
Sets the L&F object that renders this component and repaints. |
void |
setUpdateSelectionOnSort |
Specifies whether the selection should be updated after sorting. |
void |
setValueAt |
Sets the value for the cell in the table model at row and column . |
void |
sizeColumnsToFit |
Deprecated. As of Swing version 1.0.3, replaced by doLayout() . |
void |
sizeColumnsToFit |
Obsolete as of Java 2 platform v1.4. |
void |
sorterChanged |
RowSorterListener notification that the RowSorter has changed in some way. |
void |
tableChanged |
Invoked when this table's TableModel generates a TableModelEvent . |
protected void |
unconfigureEnclosingScrollPane() |
Reverses the effect of configureEnclosingScrollPane by replacing the columnHeaderView of the enclosing scroll pane with null . |
void |
updateUI() |
Notification from the UIManager that the L&F has changed. |
void |
valueChanged |
Invoked when the row selection changes -- repaints to show the new selection. |
addAncestorListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle
public static final int AUTO_RESIZE_OFF
public static final int AUTO_RESIZE_NEXT_COLUMN
public static final int AUTO_RESIZE_SUBSEQUENT_COLUMNS
public static final int AUTO_RESIZE_LAST_COLUMN
public static final int AUTO_RESIZE_ALL_COLUMNS
protected TableModel dataModel
TableModel
of the table.protected TableColumnModel columnModel
TableColumnModel
of the table.protected ListSelectionModel selectionModel
ListSelectionModel
of the table, used to keep track of row selections.protected JTableHeader tableHeader
TableHeader
working with the table.protected int rowHeight
protected int rowMargin
protected Color gridColor
protected boolean showHorizontalLines
showHorizontalLines
is true.protected boolean showVerticalLines
showVerticalLines
is true.protected int autoResizeMode
protected boolean autoCreateColumnsFromModel
TableModel
to build the default set of columns if this is true.protected Dimension preferredViewportSize
Scrollable
interface to determine the initial visible area.protected boolean rowSelectionAllowed
protected boolean cellSelectionEnabled
rowSelectionAllowed
property and the columnSelectionAllowed
property of the columnModel
instead. Or use the method getCellSelectionEnabled
.protected transient Component editorComp
Component
that is handling the editing.protected transient TableCellEditor cellEditor
null
if the table isn't currently editing.protected transient int editingColumn
protected transient int editingRow
protected transient Hashtable<Object,Object> defaultRenderersByColumnClass
getColumnClass
in the TableModel
interface.protected transient Hashtable<Object,Object> defaultEditorsByColumnClass
getColumnClass
in the TableModel
interface.protected Color selectionForeground
protected Color selectionBackground
public JTable()
JTable
that is initialized with a default data model, a default column model, and a default selection model.public JTable(TableModel dm)
JTable
that is initialized with dm
as the data model, a default column model, and a default selection model.dm
- the data model for the tablepublic JTable(TableModel dm, TableColumnModel cm)
JTable
that is initialized with dm
as the data model, cm
as the column model, and a default selection model.dm
- the data model for the tablecm
- the column model for the tablepublic JTable(TableModel dm, TableColumnModel cm, ListSelectionModel sm)
JTable
that is initialized with dm
as the data model, cm
as the column model, and sm
as the selection model. If any of the parameters are null
this method will initialize the table with the corresponding default model. The autoCreateColumnsFromModel
flag is set to false if cm
is non-null, otherwise it is set to true and the column model is populated with suitable TableColumns
for the columns in dm
.dm
- the data model for the tablecm
- the column model for the tablesm
- the row selection model for the tablepublic JTable(int numRows, int numColumns)
JTable
with numRows
and numColumns
of empty cells using DefaultTableModel
. The columns will have names of the form "A", "B", "C", etc.numRows
- the number of rows the table holdsnumColumns
- the number of columns the table holdspublic JTable(Vector<? extends Vector> rowData, Vector<?> columnNames)
JTable
to display the values in the Vector
of Vectors
, rowData
, with column names, columnNames
. The Vectors
contained in rowData
should contain the values for that row. In other words, the value of the cell at row 1, column 5 can be obtained with the following code: ((Vector)rowData.elementAt(1)).elementAt(5);
rowData
- the data for the new tablecolumnNames
- names of each columnpublic JTable(Object[][] rowData, Object[] columnNames)
JTable
to display the values in the two dimensional array, rowData
, with column names, columnNames
. rowData
is an array of rows, so the value of the cell at row 1, column 5 can be obtained with the following code: rowData[1][5];
All rows must be of the same length as columnNames
.
rowData
- the data for the new tablecolumnNames
- names of each columnpublic void addNotify()
configureEnclosingScrollPane
method.addNotify
in class JComponent
protected void configureEnclosingScrollPane()
JTable
is the viewportView
of an enclosing JScrollPane
(the usual situation), configure this ScrollPane
by, amongst other things, installing the table's tableHeader
as the columnHeaderView
of the scroll pane. When a JTable
is added to a JScrollPane
in the usual way, using new JScrollPane(myTable)
, addNotify
is called in the JTable
(when the table is added to the viewport). JTable
's addNotify
method in turn calls this method, which is protected so that this default installation procedure can be overridden by a subclass.public void removeNotify()
unconfigureEnclosingScrollPane
method.removeNotify
in class JComponent
protected void unconfigureEnclosingScrollPane()
configureEnclosingScrollPane
by replacing the columnHeaderView
of the enclosing scroll pane with null
. JTable
's removeNotify
method calls this method, which is protected so that this default uninstallation procedure can be overridden by a subclass.@Deprecated public static JScrollPane createScrollPaneForTable(JTable aTable)
new JScrollPane(aTable)
.new JScrollPane(aTable)
.aTable
- a JTable
to be used for the scroll paneJScrollPane
created using aTable
@BeanProperty(description="The JTableHeader instance which renders the column headers.") public void setTableHeader(JTableHeader tableHeader)
tableHeader
working with this JTable
to newHeader
. It is legal to have a null
tableHeader
.tableHeader
- new tableHeaderpublic JTableHeader getTableHeader()
tableHeader
used by this JTable
.tableHeader
used by this table@BeanProperty(description="The height of the specified row.") public void setRowHeight(int rowHeight)
rowHeight
, revalidates, and repaints. The height of the cells will be equal to the row height minus the row margin.rowHeight
- new row heightIllegalArgumentException
- if rowHeight
is less than 1public int getRowHeight()
@BeanProperty(description="The height in pixels of the cells in <code>row</code>") public void setRowHeight(int row, int rowHeight)
row
to rowHeight
, revalidates, and repaints. The height of the cells in this row will be equal to the row height minus the row margin.row
- the row whose height is being changedrowHeight
- new row height, in pixelsIllegalArgumentException
- if rowHeight
is less than 1public int getRowHeight(int row)
row
.row
- the row whose height is to be returned@BeanProperty(description="The amount of space between cells.") public void setRowMargin(int rowMargin)
rowMargin
- the number of pixels between cells in a rowpublic int getRowMargin()
getIntercellSpacing().height
.@BeanProperty(bound=false, description="The spacing between the cells, drawn in the background color of the JTable.") public void setIntercellSpacing(Dimension intercellSpacing)
rowMargin
and the columnMargin
-- the height and width of the space between cells -- to intercellSpacing
.intercellSpacing
- a Dimension
specifying the new width and height between cellspublic Dimension getIntercellSpacing()
@BeanProperty(description="The grid color.") public void setGridColor(Color gridColor)
gridColor
and redisplays. The default color is look and feel dependent.gridColor
- the new color of the grid linesIllegalArgumentException
- if gridColor
is null
public Color getGridColor()
@BeanProperty(description="The color used to draw the grid lines.") public void setShowGrid(boolean showGrid)
showGrid
is true it does; if it is false it doesn't. There is no getShowGrid
method as this state is held in two variables -- showHorizontalLines
and showVerticalLines
-- each of which can be queried independently.showGrid
- true if table view should draw grid lines@BeanProperty(description="Whether horizontal lines should be drawn in between the cells.") public void setShowHorizontalLines(boolean showHorizontalLines)
showHorizontalLines
is true it does; if it is false it doesn't.showHorizontalLines
- true if table view should draw horizontal lines@BeanProperty(description="Whether vertical lines should be drawn in between the cells.") public void setShowVerticalLines(boolean showVerticalLines)
showVerticalLines
is true it does; if it is false it doesn't.showVerticalLines
- true if table view should draw vertical linespublic boolean getShowHorizontalLines()
public boolean getShowVerticalLines()
@BeanProperty(enumerationValues={"JTable.AUTO_RESIZE_OFF","JTable.AUTO_RESIZE_NEXT_COLUMN","JTable.AUTO_RESIZE_SUBSEQUENT_COLUMNS","JTable.AUTO_RESIZE_LAST_COLUMN","JTable.AUTO_RESIZE_ALL_COLUMNS"}, description="Whether the columns should adjust themselves automatically.") public void setAutoResizeMode(int mode)
doLayout()
.mode
- One of 5 legal values: AUTO_RESIZE_OFF, AUTO_RESIZE_NEXT_COLUMN, AUTO_RESIZE_SUBSEQUENT_COLUMNS, AUTO_RESIZE_LAST_COLUMN, AUTO_RESIZE_ALL_COLUMNSpublic int getAutoResizeMode()
@BeanProperty(description="Automatically populates the columnModel when a new TableModel is submitted.") public void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel)
autoCreateColumnsFromModel
flag. This method calls createDefaultColumnsFromModel
if autoCreateColumnsFromModel
changes from false to true.autoCreateColumnsFromModel
- true if JTable
should automatically create columnspublic boolean getAutoCreateColumnsFromModel()
setModel
will clear any existing columns and create new columns from the new model. Also, if the event in the tableChanged
notification specifies that the entire table changed, then the columns will be rebuilt. The default is true.public void createDefaultColumnsFromModel()
getColumnCount
method defined in the TableModel
interface. Clears any existing columns before creating the new columns based on information from the model.
public void setDefaultRenderer(Class<?> columnClass, TableCellRenderer renderer)
TableColumn
. If renderer is null
, removes the default renderer for this column class.columnClass
- set the default cell renderer for this columnClassrenderer
- default cell renderer to be used for this columnClasspublic TableCellRenderer getDefaultRenderer(Class<?> columnClass)
TableColumn
. During the rendering of cells the renderer is fetched from a Hashtable
of entries according to the class of the cells in the column. If there is no entry for this columnClass
the method returns the entry for the most specific superclass. The JTable
installs entries for Object
, Number
, and Boolean
, all of which can be modified or replaced.columnClass
- return the default cell renderer for this columnClasspublic void setDefaultEditor(Class<?> columnClass, TableCellEditor editor)
TableColumn
. If no editing is required in a table, or a particular column in a table, uses the isCellEditable
method in the TableModel
interface to ensure that this JTable
will not start an editor in these columns. If editor is null
, removes the default editor for this column class.columnClass
- set the default cell editor for this columnClasseditor
- default cell editor to be used for this columnClasspublic TableCellEditor getDefaultEditor(Class<?> columnClass)
TableColumn
. During the editing of cells the editor is fetched from a Hashtable
of entries according to the class of the cells in the column. If there is no entry for this columnClass
the method returns the entry for the most specific superclass. The JTable
installs entries for Object
, Number
, and Boolean
, all of which can be modified or replaced.columnClass
- return the default cell editor for this columnClass@BeanProperty(bound=false, description="determines whether automatic drag handling is enabled") public void setDragEnabled(boolean b)
true
, and the table's TransferHandler
needs to be non-null
. The default value of the dragEnabled
property is false
. The job of honoring this property, and recognizing a user drag gesture, lies with the look and feel implementation, and in particular, the table's TableUI
. When automatic drag handling is enabled, most look and feels (including those that subclass BasicLookAndFeel
) begin a drag and drop operation whenever the user presses the mouse button over an item (in single selection mode) or a selection (in other selection modes) and then moves the mouse a few pixels. Setting this property to true
can therefore have a subtle effect on how selections behave.
If a look and feel is used that ignores this property, you can still begin a drag and drop operation by calling exportAsDrag
on the table's TransferHandler
.
b
- whether or not to enable automatic drag handlingHeadlessException
- if b
is true
and GraphicsEnvironment.isHeadless()
returns true
public boolean getDragEnabled()
dragEnabled
propertypublic final void setDropMode(DropMode dropMode)
DropMode.USE_SELECTION
. Usage of one of the other modes is recommended, however, for an improved user experience. DropMode.ON
, for instance, offers similar behavior of showing items as selected, but does so without affecting the actual selection in the table. JTable
supports the following drop modes:
DropMode.USE_SELECTION
DropMode.ON
DropMode.INSERT
DropMode.INSERT_ROWS
DropMode.INSERT_COLS
DropMode.ON_OR_INSERT
DropMode.ON_OR_INSERT_ROWS
DropMode.ON_OR_INSERT_COLS
The drop mode is only meaningful if this component has a TransferHandler
that accepts drops.
dropMode
- the drop mode to useIllegalArgumentException
- if the drop mode is unsupported or null
public final DropMode getDropMode()
@BeanProperty(bound=false) public final JTable.DropLocation getDropLocation()
null
if no location is to currently be shown. This method is not meant for querying the drop location from a TransferHandler
, as the drop location is only set after the TransferHandler
's canImport
has returned and has allowed for the location to be shown.
When this property changes, a property change event with name "dropLocation" is fired by the component.
@BeanProperty(preferred=true, description="Whether or not to turn on sorting by default.") public void setAutoCreateRowSorter(boolean autoCreateRowSorter)
RowSorter
should be created for the table whenever its model changes. When setAutoCreateRowSorter(true)
is invoked, a
TableRowSorter
is immediately created and installed on the table. While the autoCreateRowSorter
property remains true
, every time the model is changed, a new
TableRowSorter
is created and set as the table's row sorter. The default value for the autoCreateRowSorter
property is false
.
autoCreateRowSorter
- whether or not a RowSorter
should be automatically createdpublic boolean getAutoCreateRowSorter()
true
if whenever the model changes, a new RowSorter
should be created and installed as the table's sorter; otherwise, returns false
.RowSorter
should be created when the model changes@BeanProperty(expert=true, description="Whether or not to update the selection on sorting") public void setUpdateSelectionOnSort(boolean update)
update
- whether or not to update the selection on sortingpublic boolean getUpdateSelectionOnSort()
@BeanProperty(description="The table\'s RowSorter") public void setRowSorter(RowSorter<? extends TableModel> sorter)
RowSorter
. RowSorter
is used to provide sorting and filtering to a JTable
. This method clears the selection and resets any variable row heights.
This method fires a PropertyChangeEvent
when appropriate, with the property name "rowSorter"
. For backward-compatibility, this method fires an additional event with the property name "sorter"
.
If the underlying model of the RowSorter
differs from that of this JTable
undefined behavior will result.
sorter
- the RowSorter
; null
turns sorting offpublic RowSorter<? extends TableModel> getRowSorter()
@BeanProperty(enumerationValues={"ListSelectionModel.SINGLE_SELECTION","ListSelectionModel.SINGLE_INTERVAL_SELECTION","ListSelectionModel.MULTIPLE_INTERVAL_SELECTION"}, description="The selection mode used by the row and column selection models.") public void setSelectionMode(int selectionMode)
Note: JTable
provides all the methods for handling column and row selection. When setting states, such as setSelectionMode
, it not only updates the mode for the row selection model but also sets similar values in the selection model of the columnModel
. If you want to have the row and column selection models operating in different modes, set them both directly.
Both the row and column selection models for JTable
default to using a DefaultListSelectionModel
so that JTable
works the same way as the JList
. See the setSelectionMode
method in JList
for details about the modes.
selectionMode
- the mode used by the row and column selection models@BeanProperty(visualUpdate=true, description="If true, an entire row is selected for each selected cell.") public void setRowSelectionAllowed(boolean rowSelectionAllowed)
rowSelectionAllowed
- true if this model will allow row selectionpublic boolean getRowSelectionAllowed()
@BeanProperty(visualUpdate=true, description="If true, an entire column is selected for each selected cell.") public void setColumnSelectionAllowed(boolean columnSelectionAllowed)
columnSelectionAllowed
- true if this model will allow column selectionpublic boolean getColumnSelectionAllowed()
@BeanProperty(visualUpdate=true, description="Select a rectangular region of cells rather than rows or columns.") public void setCellSelectionEnabled(boolean cellSelectionEnabled)
isCellSelected
to change this default behavior. This method is equivalent to setting both the rowSelectionAllowed
property and columnSelectionAllowed
property of the columnModel
to the supplied value.cellSelectionEnabled
- true if simultaneous row and column selection is allowedpublic boolean getCellSelectionEnabled()
getRowSelectionAllowed() &&
getColumnSelectionAllowed()
.public void selectAll()
public void clearSelection()
public void setRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getRowCount()
-1]public void setColumnSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getColumnCount()
-1]public void addRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive, to the current selection.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getRowCount()
-1]public void addColumnSelectionInterval(int index0, int index1)
index0
to index1
, inclusive, to the current selection.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getColumnCount()
-1]public void removeRowSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getRowCount()
-1]public void removeColumnSelectionInterval(int index0, int index1)
index0
to index1
, inclusive.index0
- one end of the intervalindex1
- the other end of the intervalIllegalArgumentException
- if index0
or index1
lie outside [0, getColumnCount()
-1]@BeanProperty(bound=false) public int getSelectedRow()
@BeanProperty(bound=false) public int getSelectedColumn()
@BeanProperty(bound=false) public int[] getSelectedRows()
@BeanProperty(bound=false) public int[] getSelectedColumns()
@BeanProperty(bound=false) public int getSelectedRowCount()
@BeanProperty(bound=false) public int getSelectedColumnCount()
public boolean isRowSelected(int row)
row
- a row in the row modelrow
is a valid index and the row at that index is selected (where 0 is the first row)public boolean isColumnSelected(int column)
column
- the column in the column modelcolumn
is a valid index and the column at that index is selected (where 0 is the first column)public boolean isCellSelected(int row, int column)
row
- the row being queriedcolumn
- the column being queriedrow
and column
are valid indices and the cell at index (row, column)
is selected, where the first row and first column are at index 0public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend)
toggle
and extend
. Most changes to the selection that are the result of keyboard or mouse events received by the UI are channeled through this method so that the behavior may be overridden by a subclass. Some UIs may need more functionality than this method provides, such as when manipulating the lead for discontiguous selection, and may not call into this method for some selection changes. This implementation uses the following conventions:
toggle
: false, extend
: false. Clear the previous selection and ensure the new cell is selected. toggle
: false, extend
: true. Extend the previous selection from the anchor to the specified cell, clearing all other selections. toggle
: true, extend
: false. If the specified cell is selected, deselect it. If it is not selected, select it. toggle
: true, extend
: true. Apply the selection state of the anchor to all cells between it and the specified cell. rowIndex
- affects the selection at row
columnIndex
- affects the selection at column
toggle
- see description aboveextend
- if true, extend the current selectionpublic Color getSelectionForeground()
Color
object for the foreground property@BeanProperty(description="A default foreground color for selected cells.") public void setSelectionForeground(Color selectionForeground)
The default value of this property is defined by the look and feel implementation.
This is a JavaBeans bound property.
selectionForeground
- the Color
to use in the foreground for selected list itemspublic Color getSelectionBackground()
Color
used for the background of selected list items@BeanProperty(description="A default background color for selected cells.") public void setSelectionBackground(Color selectionBackground)
The default value of this property is defined by the look and feel implementation.
This is a JavaBeans bound property.
selectionBackground
- the Color
to use for the background of selected cellspublic TableColumn getColumn(Object identifier)
TableColumn
object for the column in the table whose identifier is equal to identifier
, when compared using equals
.identifier
- the identifier objectTableColumn
object that matches the identifierIllegalArgumentException
- if identifier
is null
or no TableColumn
has this identifierpublic int convertColumnIndexToModel(int viewColumnIndex)
viewColumnIndex
to the index of the column in the table model. Returns the index of the corresponding column in the model. If viewColumnIndex
is less than zero, returns viewColumnIndex
.viewColumnIndex
- the index of the column in the viewpublic int convertColumnIndexToView(int modelColumnIndex)
modelColumnIndex
to the index of the column in the view. Returns the index of the corresponding column in the view; returns -1 if this column is not being displayed. If modelColumnIndex
is less than zero, returns modelColumnIndex
.modelColumnIndex
- the index of the column in the modelpublic int convertRowIndexToView(int modelRowIndex)
TableModel
to the view. If the contents of the model are not sorted the model and view indices are the same.modelRowIndex
- the index of the row in terms of the modelIndexOutOfBoundsException
- if sorting is enabled and passed an index outside the number of rows of the TableModel
public int convertRowIndexToModel(int viewRowIndex)
TableModel
. If the contents of the model are not sorted the model and view indices are the same.viewRowIndex
- the index of the row in the viewIndexOutOfBoundsException
- if sorting is enabled and passed an index outside the range of the JTable
as determined by the method getRowCount
@BeanProperty(bound=false) public int getRowCount()
JTable
, given unlimited space. If a RowSorter
with a filter has been specified, the number of rows returned may differ from that of the underlying TableModel
.JTable
@BeanProperty(bound=false) public int getColumnCount()
public String getColumnName(int column)
column
.column
- the column in the view being queriedcolumn
in the view where the first column is column 0public Class<?> getColumnClass(int column)
column
.column
- the column in the view being queriedcolumn
in the view where the first column is column 0public Object getValueAt(int row, int column)
row
and column
. Note: The column is specified in the table view's display order, and not in the TableModel
's column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queriedpublic void setValueAt(Object aValue, int row, int column)
row
and column
. Note: The column is specified in the table view's display order, and not in the TableModel
's column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering. aValue
is the new value.
aValue
- the new valuerow
- the row of the cell to be changedcolumn
- the column of the cell to be changedpublic boolean isCellEditable(int row, int column)
row
and column
is editable. Otherwise, invoking setValueAt
on the cell will have no effect. Note: The column is specified in the table view's display order, and not in the TableModel
's column order. This is an important distinction because as the user rearranges the columns in the table, the column at a given index in the view will change. Meanwhile the user's actions never affect the model's column ordering.
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queriedpublic void addColumn(TableColumn aColumn)
aColumn
to the end of the array of columns held by this JTable
's column model. If the column name of aColumn
is null
, sets the column name of aColumn
to the name returned by getModel().getColumnName()
. To add a column to this JTable
to display the modelColumn
'th column of data in the model with a given width
, cellRenderer
, and cellEditor
you can use:
addColumn(new TableColumn(modelColumn, width, cellRenderer, cellEditor));[Any of the
TableColumn
constructors can be used instead of this one.] The model column number is stored inside the TableColumn
and is used during rendering and editing to locate the appropriates data values in the model. The model column number does not change when columns are reordered in the view.aColumn
- the TableColumn
to be addedpublic void removeColumn(TableColumn aColumn)
aColumn
from this JTable
's array of columns. Note: this method does not remove the column of data from the model; it just removes the TableColumn
that was responsible for displaying it.aColumn
- the TableColumn
to be removedpublic void moveColumn(int column, int targetColumn)
column
to the position currently occupied by the column targetColumn
in the view. The old column at targetColumn
is shifted left or right to make room.column
- the index of column to be movedtargetColumn
- the new index of the columnpublic int columnAtPoint(Point point)
point
lies in, or -1 if the result is not in the range [0, getColumnCount()
-1].point
- the location of interestpoint
lies in, or -1 if the result is not in the range [0, getColumnCount()
-1]public int rowAtPoint(Point point)
point
lies in, or -1 if the result is not in the range [0, getRowCount()
-1].point
- the location of interestpoint
lies in, or -1 if the result is not in the range [0, getRowCount()
-1]public Rectangle getCellRect(int row, int column, boolean includeSpacing)
row
and column
. If includeSpacing
is true then the value returned has the full height and width of the row and column specified. If it is false, the returned rectangle is inset by the intercell spacing to return the true bounds of the rendering or editing component as it will be set during rendering. If the column index is valid but the row index is less than zero the method returns a rectangle with the y
and height
values set appropriately and the x
and width
values both set to zero. In general, when either the row or column indices indicate a cell outside the appropriate range, the method returns a rectangle depicting the closest edge of the closest cell that is within the table's range. When both row and column indices are out of range the returned rectangle covers the closest point of the closest cell.
In all cases, calculations that use this method to calculate results along one axis will not fail because of anomalies in calculations along the other axis. When the cell is not valid the includeSpacing
parameter is ignored.
row
- the row index where the desired cell is locatedcolumn
- the column index where the desired cell is located in the display; this is not necessarily the same as the column index in the data model for the table; the convertColumnIndexToView(int)
method may be used to convert a data model column index to a display column indexincludeSpacing
- if false, return the true cell bounds - computed by subtracting the intercell spacing from the height and widths of the column and row modelsrow
,column
public void doLayout()
JTable
's columns is equal to the width of the table. Before the layout begins the method gets the resizingColumn
of the tableHeader
. When the method is called as a result of the resizing of an enclosing window, the resizingColumn
is null
. This means that resizing has taken place "outside" the JTable
and the change - or "delta" - should be distributed to all of the columns regardless of this JTable
's automatic resize mode.
If the resizingColumn
is not null
, it is one of the columns in the table that has changed size rather than the table itself. In this case the auto-resize modes govern the way the extra (or deficit) space is distributed amongst the available columns.
The modes are:
Viewport
. If the JTable
is not enclosed in a JScrollPane
this may leave parts of the table invisible. JTable
, including the one that is being adjusted. Note: When a JTable
makes adjustments to the widths of the columns it respects their minimum and maximum values absolutely. It is therefore possible that, even after this method is called, the total width of the columns is still not equal to the width of the table. When this happens the JTable
does not put itself in AUTO_RESIZE_OFF mode to bring up a scroll bar, or break other commitments of its current auto-resize mode -- instead it allows its bounds to be set larger (or smaller) than the total of the column minimum or maximum, meaning, either that there will not be enough room to display all of the columns, or that the columns will not fill the JTable
's bounds. These respectively, result in the clipping of some columns or an area being painted in the JTable
's background color during painting.
The mechanism for distributing the delta amongst the available columns is provided in a private method in the JTable
class:
adjustSizes(long targetSize, final Resizable3 r, boolean inverse)an explanation of which is provided in the following section.
Resizable3
is a private interface that allows any data structure containing a collection of elements with a size, preferred size, maximum size and minimum size to have its elements manipulated by the algorithm. Call "DELTA" the difference between the target size and the sum of the preferred sizes of the elements in r. The individual sizes are calculated by taking the original preferred sizes and adding a share of the DELTA - that share being based on how far each preferred size is from its limiting bound (minimum or maximum).
Call the individual constraints min[i], max[i], and pref[i].
Call their respective sums: MIN, MAX, and PREF.
Each new size will be calculated using:
size[i] = pref[i] + delta[i]where each individual delta[i] is calculated according to:
If (DELTA < 0) we are in shrink mode where:
DELTA delta[i] = ------------ * (pref[i] - min[i]) (PREF - MIN)If (DELTA > 0) we are in expand mode where:
DELTA delta[i] = ------------ * (max[i] - pref[i]) (MAX - PREF)
The overall effect is that the total size moves that same percentage, k, towards the total minimum or maximum and that percentage guarantees accommodation of the required space, DELTA.
Naive evaluation of the formulae presented here would be subject to the aggregated rounding errors caused by doing this operation in finite precision (using ints). To deal with this, the multiplying factor above, is constantly recalculated and this takes account of the rounding errors in the previous iterations. The result is an algorithm that produces a set of integers whose values exactly sum to the supplied targetSize
, and does so by spreading the rounding errors evenly over the given elements.
When targetSize
is outside the [MIN, MAX] range, the algorithm sets all sizes to their appropriate limiting value (maximum or minimum).
@Deprecated public void sizeColumnsToFit(boolean lastColumnOnly)
doLayout()
.lastColumnOnly
- determines whether to resize last column onlypublic void sizeColumnsToFit(int resizingColumn)
doLayout()
method instead.resizingColumn
- the column whose resizing made this adjustment necessary or -1 if there is no such columnpublic String getToolTipText(MouseEvent event)
JComponent
's getToolTipText
method in order to allow the renderer's tips to be used if it has text set. Note: For JTable
to properly display tooltips of its renderers JTable
must be a registered component with the ToolTipManager
. This is done automatically in initializeLocalVars
, but if at a later point JTable
is told setToolTipText(null)
it will unregister the table component, and no tips from renderers will display anymore.
getToolTipText
in class JComponent
event
- the MouseEvent
that initiated the ToolTip
displaypublic void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke)
surrendersFocusOnKeystroke
- true if the editor should get the focus when keystrokes cause the editor to be activatedpublic boolean getSurrendersFocusOnKeystroke()
public boolean editCellAt(int row, int column)
row
and column
, if those indices are in the valid range, and the cell at those indices is editable. Note that this is a convenience method for editCellAt(int, int, null)
.row
- the row to be editedcolumn
- the column to be editedpublic boolean editCellAt(int row, int column, EventObject e)
row
and column
, if those indices are in the valid range, and the cell at those indices is editable. To prevent the JTable
from editing a particular table, column or cell value, return false from the isCellEditable
method in the TableModel
interface.row
- the row to be editedcolumn
- the column to be editede
- event to pass into shouldSelectCell
; note that as of Java 2 platform v1.2, the call to shouldSelectCell
is no longer made@BeanProperty(bound=false) public boolean isEditing()
@BeanProperty(bound=false) public Component getEditorComponent()
public int getEditingColumn()
public int getEditingRow()
public TableUI getUI()
getUI
in class JComponent
TableUI
object that renders this component@BeanProperty(hidden=true, visualUpdate=true, description="The UI object that implements the Component\'s LookAndFeel.") public void setUI(TableUI ui)
ui
- the TableUI L&F objectpublic void updateUI()
UIManager
that the L&F has changed. Replaces the current UI object with the latest version from the UIManager
.updateUI
in class JComponent
@BeanProperty(bound=false) public String getUIClassID()
getUIClassID
in class JComponent
@BeanProperty(description="The model that is the source of the data for this view.") public void setModel(TableModel dataModel)
dataModel
and registers with it for listener notifications from the new data model.dataModel
- the new data source for this tableIllegalArgumentException
- if dataModel
is null
public TableModel getModel()
TableModel
that provides the data displayed by this JTable
.TableModel
that provides the data displayed by this JTable
@BeanProperty(description="The object governing the way columns appear in the view.") public void setColumnModel(TableColumnModel columnModel)
columnModel
and registers for listener notifications from the new column model. Also sets the column model of the JTableHeader
to columnModel
.columnModel
- the new data source for this tableIllegalArgumentException
- if columnModel
is null
public TableColumnModel getColumnModel()
TableColumnModel
that contains all column information of this table.@BeanProperty(description="The selection model for rows.") public void setSelectionModel(ListSelectionModel selectionModel)
selectionModel
and registers for listener notifications from the new selection model.selectionModel
- the new selection modelIllegalArgumentException
- if selectionModel
is null
public ListSelectionModel getSelectionModel()
ListSelectionModel
that is used to maintain row selection state.null
if row selection is not allowedpublic void sorterChanged(RowSorterEvent e)
RowSorterListener
notification that the RowSorter
has changed in some way.sorterChanged
in interface RowSorterListener
e
- the RowSorterEvent
describing the changeNullPointerException
- if e
is null
public void tableChanged(TableModelEvent e)
TableModel
generates a TableModelEvent
. The TableModelEvent
should be constructed in the coordinate system of the model; the appropriate mapping to the view coordinate system is performed by this JTable
when it receives the event. Application code will not use these methods explicitly, they are used internally by JTable
.
Note that as of 1.3, this method clears the selection, if any.
tableChanged
in interface TableModelListener
e
- a TableModelEvent
to notify listener that a table model has changedpublic void columnAdded(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnAdded
in interface TableColumnModelListener
e
- a TableColumnModelEvent
public void columnRemoved(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnRemoved
in interface TableColumnModelListener
e
- a TableColumnModelEvent
public void columnMoved(TableColumnModelEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnMoved
in interface TableColumnModelListener
e
- the event receivedpublic void columnMarginChanged(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
columnMarginChanged
in interface TableColumnModelListener
e
- the event receivedpublic void columnSelectionChanged(ListSelectionEvent e)
TableColumnModel
is changed. Application code will not use these methods explicitly, they are used internally by JTable.
columnSelectionChanged
in interface TableColumnModelListener
e
- the event receivedpublic void valueChanged(ListSelectionEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
valueChanged
in interface ListSelectionListener
e
- the event receivedpublic void editingStopped(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
editingStopped
in interface CellEditorListener
e
- the event receivedpublic void editingCanceled(ChangeEvent e)
Application code will not use these methods explicitly, they are used internally by JTable.
editingCanceled
in interface CellEditorListener
e
- the event received@BeanProperty(bound=false, description="The preferred size of the viewport.") public void setPreferredScrollableViewportSize(Dimension size)
size
- a Dimension
object specifying the preferredSize
of a JViewport
whose view is this tablepublic Dimension getPreferredScrollableViewportSize()
getPreferredScrollableViewportSize
in interface Scrollable
Dimension
object containing the preferredSize
of the JViewport
which displays this tablepublic int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction)
This method is called each time the user requests a unit scroll.
getScrollableUnitIncrement
in interface Scrollable
visibleRect
- the view area visible within the viewportorientation
- either SwingConstants.VERTICAL
or SwingConstants.HORIZONTAL
direction
- less than zero to scroll up/left, greater than zero for down/rightpublic int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction)
visibleRect.height
or visibleRect.width
, depending on this table's orientation. Note that as of Swing 1.1.1 (Java 2 v 1.2.2) the value returned will ensure that the viewport is cleanly aligned on a row boundary.getScrollableBlockIncrement
in interface Scrollable
visibleRect
- The view area visible within the viewportorientation
- Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.direction
- Less than zero to scroll up/left, greater than zero for down/right.visibleRect.height
or visibleRect.width
per the orientation@BeanProperty(bound=false) public boolean getScrollableTracksViewportWidth()
autoResizeMode
is set to AUTO_RESIZE_OFF
, which indicates that the width of the viewport does not determine the width of the table. Otherwise returns true.getScrollableTracksViewportWidth
in interface Scrollable
autoResizeMode
is set to AUTO_RESIZE_OFF
, otherwise returns true@BeanProperty(bound=false) public boolean getScrollableTracksViewportHeight()
false
to indicate that the height of the viewport does not determine the height of the table, unless getFillsViewportHeight
is true
and the preferred height of the table is smaller than the viewport's height.getScrollableTracksViewportHeight
in interface Scrollable
false
unless getFillsViewportHeight
is true
and the table needs to be stretched to fill the viewport@BeanProperty(description="Whether or not this table is always made large enough to fill the height of an enclosing viewport") public void setFillsViewportHeight(boolean fillsViewportHeight)
false
.fillsViewportHeight
- whether or not this table is always made large enough to fill the height of an enclosing viewportpublic boolean getFillsViewportHeight()
protected void createDefaultRenderers()
protected void createDefaultEditors()
protected void initializeLocalVars()
protected TableModel createDefaultDataModel()
DefaultTableModel
. A subclass can override this method to return a different table model object.protected TableColumnModel createDefaultColumnModel()
DefaultTableColumnModel
. A subclass can override this method to return a different column model object.protected ListSelectionModel createDefaultSelectionModel()
DefaultListSelectionModel
. A subclass can override this method to return a different selection model object.protected JTableHeader createDefaultTableHeader()
JTableHeader
. A subclass can override this method to return a different table header object.protected void resizeAndRepaint()
revalidate
followed by repaint
.public TableCellEditor getCellEditor()
null
if the table is not currently editing.TableCellEditor
that does the editing, or null
if the table is not currently editing.@BeanProperty(description="The table\'s active cell editor.") public void setCellEditor(TableCellEditor anEditor)
anEditor
- the active cell editorpublic void setEditingColumn(int aColumn)
editingColumn
variable.aColumn
- the column of the cell to be editedpublic void setEditingRow(int aRow)
editingRow
variable.aRow
- the row of the cell to be editedpublic TableCellRenderer getCellRenderer(int row, int column)
TableColumn
for this column has a non-null renderer, returns that. If not, finds the class of the data in this column (using getColumnClass
) and returns the default renderer for this type of data. Note: Throughout the table package, the internal implementations always use this method to provide renderers so that this default behavior can be safely overridden by a subclass.
row
- the row of the cell to render, where 0 is the first rowcolumn
- the column of the cell to render, where 0 is the first columnnull
returns the default renderer for this type of objectpublic Component prepareRenderer(TableCellRenderer renderer, int row, int column)
row
, column
. Returns the component (may be a Component
or a JComponent
) under the event location. During a printing operation, this method will configure the renderer without indicating selection or focus, to prevent them from appearing in the printed output. To do other customizations based on whether or not the table is being printed, you can check the value of JComponent.isPaintingForPrint()
, either here or within custom renderers.
Note: Throughout the table package, the internal implementations always use this method to prepare renderers so that this default behavior can be safely overridden by a subclass.
renderer
- the TableCellRenderer
to preparerow
- the row of the cell to render, where 0 is the first rowcolumn
- the column of the cell to render, where 0 is the first columnComponent
under the event locationpublic TableCellEditor getCellEditor(int row, int column)
row
and column
. If the TableColumn
for this column has a non-null editor, returns that. If not, finds the class of the data in this column (using getColumnClass
) and returns the default editor for this type of data. Note: Throughout the table package, the internal implementations always use this method to provide editors so that this default behavior can be safely overridden by a subclass.
row
- the row of the cell to edit, where 0 is the first rowcolumn
- the column of the cell to edit, where 0 is the first columnnull
return the default editor for this type of cellpublic Component prepareEditor(TableCellEditor editor, int row, int column)
row
, column
. Note: Throughout the table package, the internal implementations always use this method to prepare editors so that this default behavior can be safely overridden by a subclass.
editor
- the TableCellEditor
to set uprow
- the row of the cell to edit, where 0 is the first rowcolumn
- the column of the cell to edit, where 0 is the first columnComponent
being editedpublic void removeEditor()
protected String paramString()
null
.paramString
in class JComponent
public boolean print() throws PrinterException
JTable
in mode PrintMode.FIT_WIDTH
, with no header or footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing. Note: In headless mode, no dialogs are shown and printing occurs on the default printer.
SecurityException
- if this thread is not allowed to initiate a print job requestPrinterException
- if an error in the print system causes the job to be abortedpublic boolean print(JTable.PrintMode printMode) throws PrinterException
JTable
in the given printing mode, with no header or footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing. Note: In headless mode, no dialogs are shown and printing occurs on the default printer.
printMode
- the printing mode that the printable should useSecurityException
- if this thread is not allowed to initiate a print job requestPrinterException
- if an error in the print system causes the job to be abortedpublic boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat) throws PrinterException
JTable
in the given printing mode, with the specified header and footer text. A modal progress dialog, with an abort option, will be shown for the duration of printing. Note: In headless mode, no dialogs are shown and printing occurs on the default printer.
printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text to be used in printing a header, or null for nonefooterFormat
- a MessageFormat
specifying the text to be used in printing a footer, or null for noneSecurityException
- if this thread is not allowed to initiate a print job requestPrinterException
- if an error in the print system causes the job to be abortedpublic boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat, boolean showPrintDialog, PrintRequestAttributeSet attr, boolean interactive) throws PrinterException, HeadlessException
print
method, with the default printer specified as the print service.printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text to be used in printing a header, or null
for nonefooterFormat
- a MessageFormat
specifying the text to be used in printing a footer, or null
for noneshowPrintDialog
- whether or not to display a print dialogattr
- a PrintRequestAttributeSet
specifying any printing attributes, or null
for noneinteractive
- whether or not to print in an interactive modeHeadlessException
- if the method is asked to show a printing dialog or run interactively, and GraphicsEnvironment.isHeadless
returns true
SecurityException
- if this thread is not allowed to initiate a print job requestPrinterException
- if an error in the print system causes the job to be abortedpublic boolean print(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat, boolean showPrintDialog, PrintRequestAttributeSet attr, boolean interactive, PrintService service) throws PrinterException, HeadlessException
JTable
. Takes steps that the majority of developers would take in order to print a JTable
. In short, it prepares the table, calls getPrintable
to fetch an appropriate Printable
, and then sends it to the printer. A boolean
parameter allows you to specify whether or not a printing dialog is displayed to the user. When it is, the user may use the dialog to change the destination printer or printing attributes, or even to cancel the print. Another two parameters allow for a PrintService
and printing attributes to be specified. These parameters can be used either to provide initial values for the print dialog, or to specify values when the dialog is not shown.
A second boolean
parameter allows you to specify whether or not to perform printing in an interactive mode. If true
, a modal progress dialog, with an abort option, is displayed for the duration of printing . This dialog also prevents any user action which may affect the table. However, it can not prevent the table from being modified by code (for example, another thread that posts updates using SwingUtilities.invokeLater
). It is therefore the responsibility of the developer to ensure that no other code modifies the table in any way during printing (invalid modifications include changes in: size, renderers, or underlying data). Printing behavior is undefined when the table is changed during printing.
If false
is specified for this parameter, no dialog will be displayed and printing will begin immediately on the event-dispatch thread. This blocks any other events, including repaints, from being processed until printing is complete. Although this effectively prevents the table from being changed, it doesn't provide a good user experience. For this reason, specifying false
is only recommended when printing from an application with no visible GUI.
Note: Attempting to show the printing dialog or run interactively, while in headless mode, will result in a HeadlessException
.
Before fetching the printable, this method will gracefully terminate editing, if necessary, to prevent an editor from showing in the printed result. Additionally, JTable
will prepare its renderers during printing such that selection and focus are not indicated. As far as customizing further how the table looks in the printout, developers can provide custom renderers or paint code that conditionalize on the value of JComponent.isPaintingForPrint()
.
See getPrintable(javax.swing.JTable.PrintMode, java.text.MessageFormat, java.text.MessageFormat)
for more description on how the table is printed.
printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text to be used in printing a header, or null
for nonefooterFormat
- a MessageFormat
specifying the text to be used in printing a footer, or null
for noneshowPrintDialog
- whether or not to display a print dialogattr
- a PrintRequestAttributeSet
specifying any printing attributes, or null
for noneinteractive
- whether or not to print in an interactive modeservice
- the destination PrintService
, or null
to use the default printerHeadlessException
- if the method is asked to show a printing dialog or run interactively, and GraphicsEnvironment.isHeadless
returns true
SecurityException
- if a security manager exists and its SecurityManager.checkPrintJobAccess()
method disallows this thread from creating a print job requestPrinterException
- if an error in the print system causes the job to be abortedpublic Printable getPrintable(JTable.PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat)
Printable
for use in printing this JTable. This method is meant for those wishing to customize the default Printable
implementation used by JTable
's print
methods. Developers wanting simply to print the table should use one of those methods directly.
The Printable
can be requested in one of two printing modes. In both modes, it spreads table rows naturally in sequence across multiple pages, fitting as many rows as possible per page. PrintMode.NORMAL
specifies that the table be printed at its current size. In this mode, there may be a need to spread columns across pages in a similar manner to that of the rows. When the need arises, columns are distributed in an order consistent with the table's ComponentOrientation
. PrintMode.FIT_WIDTH
specifies that the output be scaled smaller, if necessary, to fit the table's entire width (and thereby all columns) on each page. Width and height are scaled equally, maintaining the aspect ratio of the output.
The Printable
heads the portion of table on each page with the appropriate section from the table's JTableHeader
, if it has one.
Header and footer text can be added to the output by providing MessageFormat
arguments. The printing code requests Strings from the formats, providing a single item which may be included in the formatted string: an Integer
representing the current page number.
You are encouraged to read the documentation for MessageFormat
as some characters, such as single-quote, are special and need to be escaped.
Here's an example of creating a MessageFormat
that can be used to print "Duke's Table: Page - " and the current page number:
// notice the escaping of the single quote // notice how the page number is included with "{0}" MessageFormat format = new MessageFormat("Duke''s Table: Page - {0}");
The Printable
constrains what it draws to the printable area of each page that it prints. Under certain circumstances, it may find it impossible to fit all of a page's content into that area. In these cases the output may be clipped, but the implementation makes an effort to do something reasonable. Here are a few situations where this is known to occur, and how they may be handled by this particular implementation:
ComponentOrientation
. PrintMode.NORMAL
when a column is too wide to fit in the printable area -- print the center portion of the column and leave the left and right borders off the table. It is entirely valid for this Printable
to be wrapped inside another in order to create complex reports and documents. You may even request that different pages be rendered into different sized printable areas. The implementation must be prepared to handle this (possibly by doing its layout calculations on the fly). However, providing different heights to each page will likely not work well with PrintMode.NORMAL
when it has to spread columns across pages.
As far as customizing how the table looks in the printed result, JTable
itself will take care of hiding the selection and focus during printing. For additional customizations, your renderers or painting code can customize the look based on the value of JComponent.isPaintingForPrint()
Also, before calling this method you may wish to first modify the state of the table, such as to cancel cell editing or have the user size the table appropriately. However, you must not modify the state of the table after this Printable
has been fetched (invalid modifications include changes in size or underlying data). The behavior of the returned Printable
is undefined once the table has been changed.
printMode
- the printing mode that the printable should useheaderFormat
- a MessageFormat
specifying the text to be used in printing a header, or null for nonefooterFormat
- a MessageFormat
specifying the text to be used in printing a footer, or null for nonePrintable
for printing this JTable@BeanProperty(bound=false) public AccessibleContext getAccessibleContext()
getAccessibleContext
in interface Accessible
getAccessibleContext
in class Component
© 1993, 2023, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/JTable.html
new JScrollPane(aTable)
.