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

Fields

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

Constructors

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 AbstractBorder

getBaseline, getBaselineResizeBehavior, getBorderInsets, getInteriorRectangle, getInteriorRectangle

Modifier and Type	Method	Description
int	getBaseline(Component c, int width, int height)	Returns the baseline.
Component.BaselineResizeBehavior	getBaselineResizeBehavior(Component c)	Returns an enum indicating how the baseline of a component changes as the size changes.
Insets	getBorderInsets(Component c)	This default implementation returns a new Insets object that is initialized by the AbstractBorder.getBorderInsets(Component,Insets) method.
Rectangle	getInteriorRectangle(Component c, int x, int y, int width, int height)	This convenience method calls the static method.
static Rectangle	getInteriorRectangle(Component c, Border b, int x, int y, int width, int height)	Returns a rectangle using the arguments minus the insets of the border.

Methods declared in class Object

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

Modifier and Type	Method	Description
protected Object	clone()	Creates and returns a copy of this object.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
final Class<?>	getClass()	Returns the runtime class of this Object.
int	hashCode()	Returns a hash code value for this object.
final void	notify()	Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll()	Wakes up all threads that are waiting on this object's monitor.
String	toString()	Returns a string representation of the object.
final void	wait()	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
final void	wait(long timeoutMillis)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
final void	wait(long timeoutMillis, int nanos)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Field Details

left

protected int left

The left inset of the border.

right

protected int right

The right 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