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()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • 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