java.lang.OutOfMemoryError: Java heap space
   at java.util.Arrays.copyOfRange(Arrays.java:2694)
   at java.lang.String.<init>(String.java:203)
   at java.lang.StringBuilder.toString(StringBuilder.java:405)
   at java.lang.SecurityManager.checkPackageAccess(SecurityManager.java:1524)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:305)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:172)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
   at org.netbeans.modules.sampler.InternalSampler.createInternalSampler(InternalSampler.java:85)
   at org.netbeans.modules.sampler.Sampler.createSampler(Sampler.java:102)
   at org.netbeans.core.TimableEventQueue.createSelfSampler(TimableEventQueue.java:263)
   at org.netbeans.core.TimableEventQueue.run(TimableEventQueue.java:225)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)