<Swing Dev> javax.swing.TimerQueue does not run
Martin, Stefan
stefan.martin at hob.de
Thu Nov 26 16:08:08 UTC 2009
Hi,
I found a bug in the class javax.swing.TimerQueue.
The bug occurs in openjdk-6-src-b17-14_oct_2009 on Linux.
The bug occurs a when using a javax.swing.JMenu inside another JMenu, the inner menu doesn't popup correctly.
The reason is that the Timer is not running.
I changed the file "javax/swing/TimerQueue.java" and moved the statement "running = true;"
in front of the Thread.start() method call.
synchronized void start() {
if (running) {
throw new RuntimeException("Can't start a TimerQueue " +
"that is already running");
}
else {
final ThreadGroup threadGroup =
AppContext.getAppContext().getThreadGroup();
running = true;
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
Thread timerThread = new Thread(threadGroup, TimerQueue.this,
"TimerQueue");
timerThread.setDaemon(true);
timerThread.setPriority(Thread.NORM_PRIORITY);
timerThread.start();
return null;
}
});
}
}
Best regards
Stefan
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