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Build: NetBeans IDE Dev (Build EaselCSS-480-on-20120813) VM: Java HotSpot(TM) 64-Bit Server VM, 23.2-b09, Java(TM) SE Runtime Environment, 1.7.0_06-b22 OS: Windows 7 User Comments: jskrivanek: Run html file in embedded browser. Stacktrace: java.lang.NullPointerException at java.lang.String.<init>(String.java:168) at java.lang.String.valueOf(String.java:2868) at java.lang.Thread.getName(Thread.java:1148) at java.lang.management.ThreadInfo.initialize(ThreadInfo.java:223) at java.lang.management.ThreadInfo.<init>(ThreadInfo.java:195) at sun.management.ThreadImpl.dumpThreads0(ThreadImpl.java:0)
Created attachment 123025 [details] stacktrace
It looks like JDK bug. Are you able to reproduce it? Always?
No, it happened just once.
Created attachment 123823 [details] stacktrace I run HTML5 application.
This bug already has 5 duplicates see http://statistics.netbeans.org/exceptions/detail.do?id=188597
JDK issue. It looks like there are similar reports: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6508261 http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6576701 but they are fixed in JDK 7, so this must be something a little bit different, since all report are from JDK 7.
(In reply to Jiri Skrivanek from comment #3) > No, it happened just once. I run my codes many times,this bug always happened