java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.util.Arrays.copyOf(Arrays.java:2367)
   at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
   at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
   at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:587)
   at java.lang.StringBuilder.append(StringBuilder.java:214)
   at java.lang.management.ThreadInfo.initialize(ThreadInfo.java:237)
   at java.lang.management.ThreadInfo.<init>(ThreadInfo.java:195)
   at sun.management.ThreadImpl.dumpThreads0(ThreadImpl.java:0)
   at sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:446)
   at org.netbeans.modules.sampler.Sampler$1.run(Sampler.java:191)
   at java.util.TimerThread.mainLoop(TimerThread.java:555)
   at java.util.TimerThread.run(TimerThread.java:505)