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  1. JDK
  2. JDK-6981576

TitledBorder.getBorder() returns null in java build 1.7.0-ea-b107

    Details

    • Subcomponent:
    • Introduced In Build:
      b102
    • Introduced In Version:
      7
    • Resolved In Build:
      b121
    • CPU:
      x86
    • OS:
      windows_xp
    • Verification:
      Verified

      Description

      FULL PRODUCT VERSION :
      java version "1.7.0-ea"
      Java(TM) SE Runtime Environment (build 1.7.0-ea-b107)
      Java HotSpot(TM) Client VM (build 19.0-b05, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows XP [Version 5.1.2600]

      A DESCRIPTION OF THE PROBLEM :
      On Windows XP, the getBorder() method on javax.swing.border.TitledBorder returns null.

      This is a regression - with java 6u21 and 1.7.0-ea-b36 it returns non-null.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run the attached BorderTest sample.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Proper repainting, no exceptions.
      ACTUAL -
      Painting aborted with NullPointerException:

      Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
              at MyBorder.paintBorder(MyBorder.java:17)
              at javax.swing.JComponent.paintBorder(Unknown Source)
              at javax.swing.JComponent.paint(Unknown Source)
              at javax.swing.JComponent.paintChildren(Unknown Source)
              at javax.swing.JComponent.paint(Unknown Source)
              at javax.swing.JComponent.paintChildren(Unknown Source)
              at javax.swing.JComponent.paint(Unknown Source)
              at javax.swing.JLayeredPane.paint(Unknown Source)
              at javax.swing.JComponent.paintChildren(Unknown Source)
              at javax.swing.JComponent.paintToOffscreen(Unknown Source)
              at javax.swing.BufferStrategyPaintManager.paint(Unknown Source)
              at javax.swing.RepaintManager.paint(Unknown Source)
              at javax.swing.JComponent.paint(Unknown Source)
              at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
              at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
              at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
              at java.awt.Container.paint(Unknown Source)
              at java.awt.Window.paint(Unknown Source)
              at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
              at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
              at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
              at javax.swing.RepaintManager.access$700(Unknown Source)
              at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
              at java.awt.event.InvocationEvent.dispatch(Unknown Source)
              at java.awt.EventQueue.dispatchEvent(Unknown Source)
              at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
              at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
              at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
              at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
              at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
              at java.awt.EventDispatchThread.run(Unknown Source)

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.awt.Component;
      import java.awt.Graphics;

      import javax.swing.border.TitledBorder;

      public class MyBorder extends TitledBorder
      {
         public MyBorder( String title )
         {
            super( title );
         }

         public void paintBorder( Component c, Graphics g, int x, int y, int width, int height )
         {
            if ( getTitle() == null || getTitle().length() == 0 )
            {
               getBorder().paintBorder( c, g, EDGE_SPACING, EDGE_SPACING, width - 2 * EDGE_SPACING, height - 2 * EDGE_SPACING );
            }
            else
            {
               super.paintBorder( c, g, x, y, width, height );
            }
         }
      }


      import java.awt.FlowLayout;

      import javax.swing.JFrame;
      import javax.swing.JLabel;
      import javax.swing.UIManager;

      public class BorderTest
      {
         public static void main( String[] args )
         {
            try
            {
               UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
            }
            catch ( Exception e )
            {
               e.printStackTrace();
            }

            JFrame frame = new JFrame();
            frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
            frame.getContentPane().setLayout( new FlowLayout() );
            
            JLabel label1 = new JLabel( "Component with titled border" );
            label1.setBorder( new MyBorder( "title" ) );
            frame.getContentPane().add( label1 );
            
            JLabel label2 = new JLabel( "Component with titled border - empty title" );
            label2.setBorder( new MyBorder( "" ) );
            frame.getContentPane().add( label2 );
            
            frame.pack();
            frame.setVisible( true );
         }
      }

      ---------- END SOURCE ----------

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              • Assignee:
                malenkov Sergey Malenkov (Inactive)
                Reporter:
                webbuggrp Webbug Group
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                • Created:
                  Updated:
                  Resolved:
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