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  1. JDK
  2. JDK-8190763

Class cast exception on (CompoundEdit) UndoableEditEvent.getEdit()

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    • Subcomponent:
    • Resolved In Build:
      b25
    • CPU:
      x86
    • OS:
      other

      Backports

        Description

        FULL PRODUCT VERSION :
        java version "9.0.1"
        Java(TM) SE Runtime Environment (build 9.0.1+11)
        Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

        ADDITIONAL OS VERSION INFORMATION :
        Microsoft Windows [Version 10.0.15063]

        A DESCRIPTION OF THE PROBLEM :

        Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.desktop/javax.swing.text.AbstractDocument$DefaultDocumentEventUndoableWrapper cannot be cast to java.desktop/javax.swing.undo.CompoundEdit
        at CompoundEdit edit = (CompoundEdit) undoableEditEvent.getEdit();

        Caused by addition of DefaultDocumentEventUnoableWrapper instead of DefaultDocumentEvent in javax.swing.text.AbstractDocument.java


        REGRESSION. Last worked in version 8u151

        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        1. Extend javax.swing.undo.UndoManager

        2. Override public void undoableEditHappened(UndoableEditEvent e):
         
           javax.swing.undo.CompoundEdit edit = (javax.swing.undo.CompoundEdit)
           undoableEditEvent.getEdit();

        3. Compile and execute



        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        No class cast exception in undoableEditHappened
        ACTUAL -
        Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.desktop/javax.swing.text.AbstractDocument$DefaultDocumentEventUndoableWrapper cannot be cast to java.desktop/javax.swing.undo.CompoundEdit

        at CompoundEdit edit = (CompoundEdit) undoableEditEvent.getEdit();

        REPRODUCIBILITY :
        This bug can be reproduced always.

        CUSTOMER SUBMITTED WORKAROUND :
        None

        I've seen this bug mentioned in another bug database but not here, so I'm writing this bug report in hopes that it will be fixed

          Attachments

          1. HelloWorldGUI.java
            6 kB
            Pardeep Sharma
          2. UndoableToggleApp3.java
            6 kB
            Prasanta Sadhukhan

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                Assignee:
                trebari Tejpal Rebari (Inactive)
                Reporter:
                webbuggrp Webbug Group
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                  Dates

                  Created:
                  Updated:
                  Resolved: