Warnings when running a GUI testcase #274

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1. arduhe commented on Aug 20, 2023

   

   arduhe

   on Aug 20, 2023

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   Have the same problem, but I don't think that this is a matter of increasing timer limits. Problem occured after switching from JDK 11 to JDK 17 and has a stacktrace which shows an access to a module inside java.util

   Aug. 20, 2023 9:49:38 AM org.assertj.swing.monitor.ProtectingTimerTask handleException
   WARNUNG: Exception thrown by a TimerTask
   java.lang.reflect.InaccessibleObjectException: Unable to make field int java.util.TimerTask.state accessible: module java.base does not "opens java.util" to unnamed module @6c38726a
           at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
           at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
           at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
           at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
           at org.assertj.swing.dependency.fest_reflect.util.Accessibles$SetAccessibleAction.run(Accessibles.java:70)
           at org.assertj.swing.dependency.fest_reflect.util.Accessibles$SetAccessibleAction.run(Accessibles.java:60)
           at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
           at org.assertj.swing.dependency.fest_reflect.util.Accessibles.setAccessible(Accessibles.java:57)
           at org.assertj.swing.dependency.fest_reflect.util.Accessibles.makeAccessible(Accessibles.java:46)
           at org.assertj.swing.dependency.fest_reflect.field.Invoker.verifyCorrectType(Invoker.java:98)
           at org.assertj.swing.dependency.fest_reflect.field.Invoker.createInvoker(Invoker.java:74)
           at org.assertj.swing.dependency.fest_reflect.field.Invoker.newInvoker(Invoker.java:68)
           at org.assertj.swing.dependency.fest_reflect.field.FieldType.in(FieldType.java:74)
           at org.assertj.swing.monitor.ProtectingTimerTask.isCanceled(ProtectingTimerTask.java:54)
           at org.assertj.swing.monitor.ProtectingTimerTask.run(ProtectingTimerTask.java:41)
           at java.base/java.util.TimerThread.mainLoop(Timer.java:566)
           at java.base/java.util.TimerThread.run(Timer.java:516)
   
   
2. Gambit2505 commented on Feb 27, 2026

   

   Gambit2505

   on Feb 27, 2026

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   Sorry to bring this back up, but for anyone else still having this problem, I was able to semi-permanently fix it by adding the following argument to the VM (jre 21):

   --add-opens java.base/java.util=ALL-UNNAMED