An error occurred during parsing of '/home/martin/NETBEANS/TEST/NotADefaultMethod/src/notadefaultmethod/EventThread.java'. Please report a bug against java/source and attach dump file '/tmp/NBTest/var/log/EventThread_1.dump'.
Caused: com.sun.tools.javac.code.Symbol$CompletionFailure: Fatal Error: Unable to find package java.lang in classpath or bootclasspath
   at com.sun.tools.javac.comp.TypeEnter$ImportsPhase.importAll(TypeEnter.java:435)
   at com.sun.tools.javac.comp.TypeEnter$ImportsPhase.resolveImports(TypeEnter.java:338)
   at com.sun.tools.javac.comp.TypeEnter$ImportsPhase.access$1700(TypeEnter.java:286)
   at com.sun.tools.javac.comp.TypeEnter.lambda$ensureImportsChecked$47(TypeEnter.java:173)
   at com.sun.tools.javac.comp.TypeEnter.finishImports(TypeEnter.java:224)
   at com.sun.tools.javac.comp.TypeEnter.ensureImportsChecked(TypeEnter.java:173)
   at com.sun.tools.javac.comp.Enter.complete(Enter.java:725)
   at org.netbeans.lib.nbjavac.services.NBJavadocEnter.main(NBJavadocEnter.java:84)
   at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:985)
   at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:368)
   at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:310)
   at org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:631)
   at org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:497)
   at org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:163)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callGetResult(TaskProcessor.java:631)
   at org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:262)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:798)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:265)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)