Duplicate :
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CR 6437701 is fixed for JDK7, but still occurs with JDK6: On Windows when TMP variable is set to nonexistent directory, NullPointerException is thrown: > set TMP=n:\nonexistent > jps Exception in thread "main" java.lang.NullPointerException at sun.jvmstat.perfdata.monitor.protocol.local.LocalVmManager.activeVms(LocalVmManager.java:127) at sun.jvmstat.perfdata.monitor.protocol.local.MonitoredHostProvider.activeVms(MonitoredHostProvider.java:133) at sun.tools.jps.Jps.main(Jps.java:45)
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