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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)
> jconsole
(no connection dialog is displayed)
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