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  1. JDK
  2. JDK-6233069

JOptionPane.createDialog leaks resources

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    • generic, x86
    • generic, windows_xp

      FULL PRODUCT VERSION :
      java version "1.5.0_01"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_01-b08)
      Java HotSpot(TM) Client VM (build 1.5.0_01-b08, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Windows XP

      A DESCRIPTION OF THE PROBLEM :
      Using JOptionPane.createDialog to construct a dialog for displaying results in the embedded component not being GC'ed when the dialog is dismissed. If you embed the same component within a JOptionPane.showMessageDialog you do not get a leak.

      (Leak also exist in 1.4.2_02)

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run the following program and attach your favorite profiler to it. Count how many JLabels are left...

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Number of JLabels shoud be 0 (zero)
      ACTUAL -
      Number of JLabels was 10 (ten)

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import javax.swing.*;

      public class Option
      {
        public static void main(String[] args) throws Throwable
        {
          // give yourself time to run profiler
          System.out.println("attach profiler now...");
          Thread.sleep(5000);
          System.out.println("running app...");

          // these JLabels don't get GC'ed :(
          for(int i = 0; i < 10; i++)
          {
            JLabel goodbye = new JLabel("Goodbye " + i);
            JOptionPane op = new JOptionPane(goodbye, JOptionPane.PLAIN_MESSAGE);
            JDialog d = op.createDialog(null, "Goodbye");
            d.setVisible(true);
            op = null;
            d = null;
            goodbye = null;
          }

          // these JLabels GC correctly
          for(int i = 0; i < 10; i++)
          {
            JLabel hello = new JLabel("Hello " + i);
            JOptionPane.showMessageDialog(null, hello, "Hello", JOptionPane.PLAIN_MESSAGE);
          }
        }
      }



      ---------- END SOURCE ----------
      ###@###.### 2005-2-25 08:49:08 GMT

            alexp Alexander Potochkin (Inactive)
            ndcosta Nelson Dcosta (Inactive)
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              Created:
              Updated:
              Resolved:
              Imported:
              Indexed: