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Unfortunately I cannot attach my source code, but I thought I would report this issue anyways. It happended while I was editing a java file obviously. Product Version = NetBeans IDE Dev (Build 201102020000) Operating System = Mac OS X version 10.6.6 running on x86_64 Java; VM; Vendor = 1.6.0_22 Runtime = Java HotSpot(TM) 64-Bit Server VM 17.1-b03-307 Caused: java.lang.NullPointerException at com.sun.tools.javac.code.Types$UnaryVisitor.visit(Types.java:3643) at com.sun.tools.javac.code.Types$Subst.subst(Types.java:2182) at com.sun.tools.javac.code.Types.subst(Types.java:2156) at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:400) at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:393) at com.sun.tools.javac.comp.Resolve.instantiate(Resolve.java:428) at com.sun.tools.javac.comp.Resolve.signatureMoreSpecific(Resolve.java:824) at com.sun.tools.javac.comp.Resolve.mostSpecific(Resolve.java:733) at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:707) at com.sun.tools.javac.comp.Resolve.findFun(Resolve.java:1023) at com.sun.tools.javac.comp.Resolve.resolveMethod(Resolve.java:1377) at com.sun.tools.javac.comp.Attr.visitIdent(Attr.java:2196) at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1717) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:458) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:477) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1484) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1329) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:458) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431) at com.sun.tools.javac.comp.Attr.attribArgs(Attr.java:532) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1472) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1329) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:458) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431) at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:488) at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1249) at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1175) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:458) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:508) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:524) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:906) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:789) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:458) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:508) at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:821) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:676) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:458) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:508) at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:3239) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:3165) at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:3096) at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1242) at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1216) at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:476) at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:455) at org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:578) at org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:435) at org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:155) at org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:222) [catch] at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:665) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680)
Hopefully this helps. When I cut this code from the java file, problem goes away. When I add it back, NPE everytime I try to save the file. proj.getProfiles(); asertThat(proj.getProfiles(), contains(items)); assertThat(proj.getProfiles(), equalTo(BuildResultDTO.SUCCESS)); Things of note: * spelling mistakes (asert*) * items refers to a type that is not the same as what getProfiles() returns * BuldResultDTO.SUCCESS is an enum * SUCCESS is not the same as the type returned by getProfiles() * above code uses hamcrest assertions
Even more: Adding this code to a junit test that uses Hamcrest assertions creates the NPE everytime. assertThat(profiles, contains(null)) profiles is a List of a specific type. List<MyType>
*** This bug has been marked as a duplicate of bug 193862 ***