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  1. JDK
  2. JDK-7029995

NullPointerException in sun.java2d.ScreenUpdateManager.createScreenSurface()

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    • Icon: Bug Bug
    • Resolution: Not an Issue
    • Icon: P3 P3
    • None
    • 7
    • client-libs
    • x86
    • windows_7

      FULL PRODUCT VERSION :
      java version "1.7.0-ea"
      Java(TM) SE Runtime Environment (build 1.7.0-ea-b130)
      Java HotSpot(TM) Client VM (build 21.0-b02, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows [Version 6.1.7601]

      A DESCRIPTION OF THE PROBLEM :
      A NullPointerException occurs in JDK 7 when calling Container.remove() and the Component.removeNotify() has been overridden to retain the peer object.

      This results from the addition, in Java 7, of the line:
          comp.setGraphicsConfiguration(null);
      at
          java.awt.Container.remove(Container.java:1209)

      REGRESSION. Last worked in version 6u24

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Please run the test case, ScreenUpdateManagerNPE.main().

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Given test case is expected to run without exception on Java 7.
      ACTUAL -
      Given test case runs to completion on Java 6. NPE occurs on Java 7.

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
      at sun.java2d.ScreenUpdateManager.createScreenSurface(ScreenUpdateManager.java:86)
      at sun.java2d.d3d.D3DScreenUpdateManager.createScreenSurface(D3DScreenUpdateManager.java:161)
      at sun.awt.windows.WComponentPeer.createScreenSurface(WComponentPeer.java:424)
      at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java:448)
      at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java:416)
      at sun.awt.windows.WComponentPeer.updateGraphicsData(WComponentPeer.java:504)
      at java.awt.Component.updateGraphicsData(Component.java:1144)
      at java.awt.Component.setGraphicsConfiguration(Component.java:1130)
      at java.awt.Canvas.setGraphicsConfiguration(Canvas.java:79)
      at java.awt.Container.remove(Container.java:1209)
      at java.awt.Container.remove(Container.java:1253)
      at javax.swing.JFrame.remove(JFrame.java:585)
      at com.attachmate.bugdemo.ScreenUpdateManagerNPE$3.run(ScreenUpdateManagerNPE.java:45)
      at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
      at java.awt.EventQueue.dispatchEvent(EventQueue.java:660)
      at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
      at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
      at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      /**
       * Example class.
       */
      package com.attachmate.bugdemo;

      import javax.swing.*;
      import java.awt.*;

      public class ScreenUpdateManagerNPE
      {
          private static class MyCanvas extends Canvas
          {
              public void removeNotify() {} // retain surface

              public void releaseSurface()
              {
                  super.removeNotify();
              }
          }

          private static final long VISIBLE_STEP_DELAY = 1000L;

          public static void main(String[] args) throws InterruptedException
          {
              final JFrame frame = new JFrame("ScreenUpdateManager NPE Demo");
              frame.getContentPane().setBackground(Color.blue);
              frame.setLayout(null);
              frame.setSize(200, 200);

              final MyCanvas canvas = new MyCanvas();
              canvas.setBackground(Color.green);
              canvas.setSize(50, 50);

              SwingUtilities.invokeLater(new Runnable() {public void run() {
                  frame.setVisible(true);
              } });

              Thread.sleep(VISIBLE_STEP_DELAY);
              SwingUtilities.invokeLater(new Runnable() {public void run() {
                  frame.add(canvas, 0);
              } });

              Thread.sleep(VISIBLE_STEP_DELAY);
              SwingUtilities.invokeLater(new Runnable() {public void run() {
                  frame.remove(canvas); // <-- NPE occurs here
                  canvas.releaseSurface();
              } });

              Thread.sleep(VISIBLE_STEP_DELAY);
              System.exit(0);
          }
      }

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

            anthony Anthony Petrov (Inactive)
            webbuggrp Webbug Group
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              Created:
              Updated:
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