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/OpenJDK 21

Class EmptyBorder

java.lang.Object
javax.swing.border.AbstractBorder
javax.swing.border.EmptyBorder
All Implemented Interfaces:
Serializable, Border
Direct Known Subclasses:
BorderUIResource.EmptyBorderUIResource, MatteBorder 
public class EmptyBorder extends AbstractBorder implements Serializable
A class which provides an empty, transparent border which takes up space but does no drawing.

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.

Field Summary

Modifier and Type Field Description
protected int bottom
The bottom inset of the border.
protected int left
The left inset of the border.
protected int right
The right inset of the border.
protected int top
The top inset of the border.

Constructor Summary

Constructor Description
EmptyBorder(int top, int left, int bottom, int right)
Creates an empty border with the specified insets.
EmptyBorder(Insets borderInsets)
Creates an empty border with the specified insets.

Method Summary

Modifier and Type Method Description
Insets getBorderInsets()
Returns the insets of the border.
Insets getBorderInsets(Component c, Insets insets)
Reinitialize the insets parameter with this Border's current Insets.
boolean isBorderOpaque()
Returns whether or not the border is opaque.
void paintBorder(Component c, Graphics g, int x, int y, int width, int height)
Does no drawing by default.

Methods declared in class javax.swing.border.AbstractBorder

getBaseline, getBaselineResizeBehavior, getBorderInsets, getInteriorRectangle, getInteriorRectangle

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

left

protected int left
The left inset of the border.

top

protected int top
The top inset of the border.

bottom

protected int bottom
The bottom inset of the border.

Constructor Details

EmptyBorder

public EmptyBorder(int top, int left, int bottom, int right)
Creates an empty border with the specified insets.
Parameters:
top - the top inset of the border
left - the left inset of the border
bottom - the bottom inset of the border
right - the right inset of the border

EmptyBorder

@ConstructorProperties("borderInsets") public EmptyBorder(Insets borderInsets)
Creates an empty border with the specified insets.
Parameters:
borderInsets - the insets of the border
Throws:
NullPointerException - if the specified borderInsets is null

Method Details

paintBorder

public void paintBorder(Component c, Graphics g, int x, int y, int width, int height)
Does no drawing by default.
Specified by:
paintBorder in interface Border
Overrides:
paintBorder in class AbstractBorder
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

public Insets getBorderInsets(Component c, Insets insets)
Reinitialize the insets parameter with this Border's current Insets.
Overrides:
getBorderInsets in class AbstractBorder
Parameters:
c - the component for which this border insets value applies
insets - the object to be reinitialized
Returns:
the insets object
Throws:
NullPointerException - if the specified insets is null

getBorderInsets

public Insets getBorderInsets()
Returns the insets of the border.
Returns:
an Insets object containing the insets from top, left, bottom and right
Since:
1.3

isBorderOpaque

public boolean isBorderOpaque()
Returns whether or not the border is opaque. Returns false by default.
Specified by:
isBorderOpaque in interface Border
Overrides:
isBorderOpaque in class AbstractBorder
Returns:
false

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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/EmptyBorder.html