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Asked: 2026-05-10T15:04:23+00:00

I’m getting a random unreproducible Error when initializing a JSplitPane in with JDK 1.5.0_08.

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I’m getting a random unreproducible Error when initializing a JSplitPane in with JDK 1.5.0_08. Note that this does not occur every time, but about 80% of the time:

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: javax.swing.KeyStroke     at java.util.TreeMap.compare(TreeMap.java:1093)     at java.util.TreeMap.put(TreeMap.java:465)     at java.util.TreeSet.add(TreeSet.java:210)     at javax.swing.plaf.basic.BasicSplitPaneUI.installDefaults(BasicSplitPaneUI.java:364)     at javax.swing.plaf.basic.BasicSplitPaneUI.installUI(BasicSplitPaneUI.java:300)     at javax.swing.JComponent.setUI(JComponent.java:652)     at javax.swing.JSplitPane.setUI(JSplitPane.java:350)     at javax.swing.JSplitPane.updateUI(JSplitPane.java:378)     at javax.swing.JSplitPane.<init>(JSplitPane.java:332)     at javax.swing.JSplitPane.<init>(JSplitPane.java:287)     ...

Thoughts? I’ve tried cleaning and rebuilding my project so as to minimize the probability of corrupted class files.

Looking at JDK-6434148 : ClassCastException thrown while running SwingSet2 demo, this seems to be a JDK bug. Any known workarounds? None are listed on the bug entry page.

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1 Answer

  1. After doing some searching in the Java Bug Database, this looks like this might be a JDK bug that was only fixed in JDK 6.

    See JDK-6434148 : ClassCastException thrown while running SwingSet2 demo.

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