Serializable
, TableModel
public class DefaultTableModel extends AbstractTableModel implements Serializable
TableModel
that uses a Vector
of Vectors
to store the cell value objects. Warning: DefaultTableModel
returns a column class of Object
. When DefaultTableModel
is used with a TableRowSorter
this will result in extensive use of toString
, which for non-String
data types is expensive. If you use DefaultTableModel
with a TableRowSorter
you are strongly encouraged to override getColumnClass
to return the appropriate type.
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 | Field | Description |
---|---|---|
protected Vector |
columnIdentifiers |
The Vector of column identifiers. |
protected Vector |
dataVector |
The Vector of Vectors of Object values. |
listenerList
Constructor | Description |
---|---|
DefaultTableModel() |
Constructs a default DefaultTableModel which is a table of zero columns and zero rows. |
DefaultTableModel |
Constructs a DefaultTableModel with rowCount and columnCount of null object values. |
DefaultTableModel |
Constructs a DefaultTableModel and initializes the table by passing data and columnNames to the setDataVector method. |
DefaultTableModel |
Constructs a DefaultTableModel with as many columns as there are elements in columnNames and rowCount of null object values. |
DefaultTableModel |
Constructs a DefaultTableModel with as many columns as there are elements in columnNames and rowCount of null object values. |
DefaultTableModel |
Constructs a DefaultTableModel and initializes the table by passing data and columnNames to the setDataVector method. |
Modifier and Type | Method | Description |
---|---|---|
void |
addColumn |
Adds a column to the model. |
void |
addColumn |
Adds a column to the model. |
void |
addColumn |
Adds a column to the model. |
void |
addRow |
Adds a row to the end of the model. |
void |
addRow |
Adds a row to the end of the model. |
protected static Vector |
convertToVector |
Returns a vector that contains the same objects as the array. |
protected static Vector |
convertToVector |
Returns a vector of vectors that contains the same objects as the array. |
int |
getColumnCount() |
Returns the number of columns in this data table. |
String |
getColumnName |
Returns the column name. |
Vector |
getDataVector() |
Returns the Vector of Vectors that contains the table's data values. |
int |
getRowCount() |
Returns the number of rows in this data table. |
Object |
getValueAt |
Returns an attribute value for the cell at row and column . |
void |
insertRow |
Inserts a row at row in the model. |
void |
insertRow |
Inserts a row at row in the model. |
boolean |
isCellEditable |
Returns true regardless of parameter values. |
void |
moveRow |
Moves one or more rows from the inclusive range start to end to the to position in the model. |
void |
newDataAvailable |
Equivalent to fireTableChanged . |
void |
newRowsAdded |
Ensures that the new rows have the correct number of columns. |
void |
removeRow |
Removes the row at row from the model. |
void |
rowsRemoved |
Equivalent to fireTableChanged . |
void |
setColumnCount |
Sets the number of columns in the model. |
void |
setColumnIdentifiers |
Replaces the column identifiers in the model. |
void |
setColumnIdentifiers |
Replaces the column identifiers in the model. |
void |
setDataVector |
Replaces the value in the dataVector instance variable with the values in the array dataVector . |
void |
setDataVector |
Replaces the current dataVector instance variable with the new Vector of rows, dataVector . |
void |
setNumRows |
Obsolete as of Java 2 platform v1.3. |
void |
setRowCount |
Sets the number of rows in the model. |
void |
setValueAt |
Sets the object value for the cell at column and row . |
addTableModelListener, findColumn, fireTableCellUpdated, fireTableChanged, fireTableDataChanged, fireTableRowsDeleted, fireTableRowsInserted, fireTableRowsUpdated, fireTableStructureChanged, getColumnClass, getListeners, getTableModelListeners, removeTableModelListener
protected Vector<Vector> dataVector
Vector
of Vectors
of Object
values.protected Vector columnIdentifiers
Vector
of column identifiers.public DefaultTableModel()
DefaultTableModel
which is a table of zero columns and zero rows.public DefaultTableModel(int rowCount, int columnCount)
DefaultTableModel
with rowCount
and columnCount
of null
object values.rowCount
- the number of rows the table holdscolumnCount
- the number of columns the table holdspublic DefaultTableModel(Vector<?> columnNames, int rowCount)
DefaultTableModel
with as many columns as there are elements in columnNames
and rowCount
of null
object values. Each column's name will be taken from the columnNames
vector.columnNames
- vector
containing the names of the new columns; if this is null
then the model has no columnsrowCount
- the number of rows the table holdspublic DefaultTableModel(Object[] columnNames, int rowCount)
DefaultTableModel
with as many columns as there are elements in columnNames
and rowCount
of null
object values. Each column's name will be taken from the columnNames
array.columnNames
- array
containing the names of the new columns; if this is null
then the model has no columnsrowCount
- the number of rows the table holdspublic DefaultTableModel(Vector<? extends Vector> data, Vector<?> columnNames)
DefaultTableModel
and initializes the table by passing data
and columnNames
to the setDataVector
method.data
- the data of the table, a Vector
of Vector
s of Object
valuescolumnNames
- vector
containing the names of the new columnspublic DefaultTableModel(Object[][] data, Object[] columnNames)
DefaultTableModel
and initializes the table by passing data
and columnNames
to the setDataVector
method. The first index in the Object[][]
array is the row index and the second is the column index.data
- the data of the tablecolumnNames
- the names of the columnspublic Vector<Vector> getDataVector()
Vector
of Vectors
that contains the table's data values. The vectors contained in the outer vector are each a single row of values. In other words, to get to the cell at row 1, column 5: ((Vector)getDataVector().elementAt(1)).elementAt(5);
public void setDataVector(Vector<? extends Vector> dataVector, Vector<?> columnIdentifiers)
dataVector
instance variable with the new Vector
of rows, dataVector
. Each row is represented in dataVector
as a Vector
of Object
values. columnIdentifiers
are the names of the new columns. The first name in columnIdentifiers
is mapped to column 0 in dataVector
. Each row in dataVector
is adjusted to match the number of columns in columnIdentifiers
either by truncating the Vector
if it is too long, or adding null
values if it is too short. Note that passing in a null
value for dataVector
results in unspecified behavior, an possibly an exception.
dataVector
- the new data vectorcolumnIdentifiers
- the names of the columnspublic void setDataVector(Object[][] dataVector, Object[] columnIdentifiers)
dataVector
instance variable with the values in the array dataVector
. The first index in the Object[][]
array is the row index and the second is the column index. columnIdentifiers
are the names of the new columns.dataVector
- the new data vectorcolumnIdentifiers
- the names of the columnspublic void newDataAvailable(TableModelEvent event)
fireTableChanged
.event
- the change eventpublic void newRowsAdded(TableModelEvent e)
setSize
method in Vector
which truncates vectors which are too long, and appends null
s if they are too short. This method also sends out a tableChanged
notification message to all the listeners.e
- this TableModelEvent
describes where the rows were added. If null
it assumes all the rows were newly addedpublic void rowsRemoved(TableModelEvent event)
fireTableChanged
.event
- the change eventpublic void setNumRows(int rowCount)
setRowCount
instead.rowCount
- the new number of rowspublic void setRowCount(int rowCount)
rowCount
and greater are discarded.rowCount
- number of rows in the modelpublic void addRow(Vector<?> rowData)
null
values unless rowData
is specified. Notification of the row being added will be generated.rowData
- optional data of the row being addedpublic void addRow(Object[] rowData)
null
values unless rowData
is specified. Notification of the row being added will be generated.rowData
- optional data of the row being addedpublic void insertRow(int row, Vector<?> rowData)
row
in the model. The new row will contain null
values unless rowData
is specified. Notification of the row being added will be generated.row
- the row index of the row to be insertedrowData
- optional data of the row being addedArrayIndexOutOfBoundsException
- if the row was invalidpublic void insertRow(int row, Object[] rowData)
row
in the model. The new row will contain null
values unless rowData
is specified. Notification of the row being added will be generated.row
- the row index of the row to be insertedrowData
- optional data of the row being addedArrayIndexOutOfBoundsException
- if the row was invalidpublic void moveRow(int start, int end, int to)
start
to end
to the to
position in the model. After the move, the row that was at index start
will be at index to
. This method will send a tableChanged
notification message to all the listeners. Examples of moves: 1. moveRow(1,3,5); a|B|C|D|e|f|g|h|i|j|k - before a|e|f|g|h|B|C|D|i|j|k - after 2. moveRow(6,7,1); a|b|c|d|e|f|G|H|i|j|k - before a|G|H|b|c|d|e|f|i|j|k - after
start
- the starting row index to be movedend
- the ending row index to be movedto
- the destination of the rows to be movedArrayIndexOutOfBoundsException
- if any of the elements would be moved out of the table's rangepublic void removeRow(int row)
row
from the model. Notification of the row being removed will be sent to all the listeners.row
- the row index of the row to be removedArrayIndexOutOfBoundsException
- if the row was invalidpublic void setColumnIdentifiers(Vector<?> columnIdentifiers)
newIdentifier
s is greater than the current number of columns, new columns are added to the end of each row in the model. If the number of newIdentifier
s is less than the current number of columns, all the extra columns at the end of a row are discarded.columnIdentifiers
- vector of column identifiers. If null
, set the model to zero columnspublic void setColumnIdentifiers(Object[] newIdentifiers)
newIdentifier
s is greater than the current number of columns, new columns are added to the end of each row in the model. If the number of newIdentifier
s is less than the current number of columns, all the extra columns at the end of a row are discarded.newIdentifiers
- array of column identifiers. If null
, set the model to zero columnspublic void setColumnCount(int columnCount)
null
cell values. If the new size is less than the current size, all columns at index columnCount
and greater are discarded.columnCount
- the new number of columns in the modelpublic void addColumn(Object columnName)
columnName
, which may be null. This method will send a tableChanged
notification message to all the listeners. This method is a cover for addColumn(Object, Vector)
which uses null
as the data vector.columnName
- the identifier of the column being addedpublic void addColumn(Object columnName, Vector<?> columnData)
columnName
, which may be null. columnData
is the optional vector of data for the column. If it is null
the column is filled with null
values. Otherwise, the new data will be added to model starting with the first element going to row 0, etc. This method will send a tableChanged
notification message to all the listeners.columnName
- the identifier of the column being addedcolumnData
- optional data of the column being addedpublic void addColumn(Object columnName, Object[] columnData)
columnName
. columnData
is the optional array of data for the column. If it is null
the column is filled with null
values. Otherwise, the new data will be added to model starting with the first element going to row 0, etc. This method will send a tableChanged
notification message to all the listeners.columnName
- identifier of the newly created columncolumnData
- new data to be added to the columnpublic int getRowCount()
getRowCount
in interface TableModel
public int getColumnCount()
getColumnCount
in interface TableModel
public String getColumnName(int column)
getColumnName
in interface TableModel
getColumnName
in class AbstractTableModel
column
- the column being queriedcolumnIdentifiers
. If columnIdentifiers
does not have an entry for this index, returns the default name provided by the superclass.public boolean isCellEditable(int row, int column)
isCellEditable
in interface TableModel
isCellEditable
in class AbstractTableModel
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queriedpublic Object getValueAt(int row, int column)
row
and column
.getValueAt
in interface TableModel
row
- the row whose value is to be queriedcolumn
- the column whose value is to be queriedArrayIndexOutOfBoundsException
- if an invalid row or column was givenpublic void setValueAt(Object aValue, int row, int column)
column
and row
. aValue
is the new value. This method will generate a tableChanged
notification.setValueAt
in interface TableModel
setValueAt
in class AbstractTableModel
aValue
- the new value; this can be nullrow
- the row whose value is to be changedcolumn
- the column whose value is to be changedArrayIndexOutOfBoundsException
- if an invalid row or column was givenprotected static Vector<Object> convertToVector(Object[] anArray)
anArray
- the array to be convertedanArray
is null
, returns null
protected static Vector<Vector<Object>> convertToVector(Object[][] anArray)
anArray
- the double array to be convertedanArray
is null
, returns null
© 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/table/DefaultTableModel.html