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/OpenJDK 21

Interface Border

All Known Implementing Classes:
AbstractBorder, BasicBorders.ButtonBorder, BasicBorders.FieldBorder, BasicBorders.MarginBorder, BasicBorders.MenuBarBorder, BasicBorders.RadioButtonBorder, BasicBorders.RolloverButtonBorder, BasicBorders.SplitPaneBorder, BasicBorders.ToggleButtonBorder, BevelBorder, BorderUIResource, BorderUIResource.BevelBorderUIResource, BorderUIResource.CompoundBorderUIResource, BorderUIResource.EmptyBorderUIResource, BorderUIResource.EtchedBorderUIResource, BorderUIResource.LineBorderUIResource, BorderUIResource.MatteBorderUIResource, BorderUIResource.TitledBorderUIResource, CompoundBorder, EmptyBorder, EtchedBorder, LineBorder, MatteBorder, MetalBorders.ButtonBorder, MetalBorders.Flush3DBorder, MetalBorders.InternalFrameBorder, MetalBorders.MenuBarBorder, MetalBorders.MenuItemBorder, MetalBorders.OptionDialogBorder, MetalBorders.PaletteBorder, MetalBorders.PopupMenuBorder, MetalBorders.RolloverButtonBorder, MetalBorders.ScrollPaneBorder, MetalBorders.TableHeaderBorder, MetalBorders.TextFieldBorder, MetalBorders.ToggleButtonBorder, MetalBorders.ToolBarBorder, SoftBevelBorder, StrokeBorder, TitledBorder 
public interface Border
Interface describing an object capable of rendering a border around the edges of a swing component. For examples of using borders see How to Use Borders, a section in The Java Tutorial.

In the Swing component set, borders supersede Insets as the mechanism for creating a (decorated or plain) area around the edge of a component.

Usage Notes:

  • Use EmptyBorder to create a plain border (this mechanism replaces its predecessor, setInsets).
  • Use CompoundBorder to nest multiple border objects, creating a single, combined border.
  • Border instances are designed to be shared. Rather than creating a new border object using one of border classes, use the BorderFactory methods, which produces a shared instance of the common border types.
  • Additional border styles include BevelBorder, SoftBevelBorder, EtchedBorder, LineBorder, TitledBorder, and MatteBorder.
  • To create a new border class, subclass AbstractBorder.
See Also:

Method Summary

Modifier and Type Method Description
Insets getBorderInsets(Component c)
Returns the insets of the border.
boolean isBorderOpaque()
Returns whether or not the border is opaque.
void paintBorder(Component c, Graphics g, int x, int y, int width, int height)
Paints the border for the specified component with the specified position and size.

Method Details

paintBorder

void paintBorder(Component c, Graphics g, int x, int y, int width, int height)
Paints the border for the specified component with the specified position and size.
Parameters:
c - the component for which this border is being painted
g - the paint graphics
x - the x position of the painted border
y - the y position of the painted border
width - the width of the painted border
height - the height of the painted border

getBorderInsets

Insets getBorderInsets(Component c)
Returns the insets of the border.
Parameters:
c - the component for which this border insets value applies
Returns:
an Insets object containing the insets from top, left, bottom and right of this Border

isBorderOpaque

boolean isBorderOpaque()
Returns whether or not the border is opaque. If the border is opaque, it is responsible for filling in it's own background when painting.
Returns:
true if this Border is opaque

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/border/Border.html