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Build: NetBeans IDE 7.2 (Build 201207160020) VM: Java HotSpot(TM) 64-Bit Server VM, 23.2-b05, Java(TM) SE Runtime Environment, 1.7.0_06-ea-b14 OS: Linux Stacktrace: java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.TimSort.mergeHi(TimSort.java:868) at java.util.TimSort.mergeAt(TimSort.java:485) at java.util.TimSort.mergeForceCollapse(TimSort.java:426) at java.util.TimSort.sort(TimSort.java:223) at java.util.TimSort.sort(TimSort.java:173) at java.util.Arrays.sort(Arrays.java:659)
Created attachment 122089 [details] stacktrace
This problem is related to JDK bug 7173464. See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7173464 Workaround suggested in the JDK bug report: Use the -Djava.util.Arrays.useLegacyMergeSort=true command line option to disable the Java 7 sort. Thank you for reporting.