java.lang.UnsupportedOperationException
   at com.sun.tools.javac.jvm.ClassReader$SourceFileObject.getCharContent(ClassReader.java:2817)
   at com.sun.tools.javac.jvm.ClassReader$SourceFileObject.getCharContent(ClassReader.java:2768)
   at com.sun.tools.javac.util.DiagnosticSource.initBuf(DiagnosticSource.java:186)
   at com.sun.tools.javac.util.DiagnosticSource.findLine(DiagnosticSource.java:154)
   at com.sun.tools.javac.util.DiagnosticSource.getLineNumber(DiagnosticSource.java:78)
   at com.sun.tools.javac.util.JCDiagnostic.<init>(JCDiagnostic.java:308)
   at com.sun.tools.javac.util.JCDiagnostic$Factory.create(JCDiagnostic.java:164)
   at com.sun.tools.javac.util.JCDiagnostic$Factory.warning(JCDiagnostic.java:110)
   at com.sun.tools.javac.util.AbstractLog.warning(AbstractLog.java:122)
   at com.sun.tools.javac.comp.Check.checkRaw(Check.java:906)
   at com.sun.tools.javac.comp.Check.validate(Check.java:894)
   at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:803)
   at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:718)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:476)
   at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2925)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2851)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2782)
   at com.sun.tools.javac.comp.Attr.visitClassDef(Attr.java:653)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:589)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:476)
   at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2925)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2851)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2782)
   at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1184)
   at com.sun.tools.javac.api.JavacTaskImpl$2.process(JavacTaskImpl.java:477)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:625)
   at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:480)
   at com.sun.tools.javac.api.JavacTaskImpl.generate(JavacTaskImpl.java:528)
   at org.netbeans.modules.java.source.TreeLoader.dumpSymFile(TreeLoader.java:279)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.dumpSymFiles(MultiPassCompileWorker.java:336)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.compile(MultiPassCompileWorker.java:114)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer$1.run(JavaCustomIndexer.java:189)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer$1.run(JavaCustomIndexer.java:163)
   at org.netbeans.modules.java.source.usages.ClassIndexManager.prepareWriteLock(ClassIndexManager.java:114)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer.index(JavaCustomIndexer.java:163)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$2.run(Indexable.java:172)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:231)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:170)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:1641)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$1200(RepositoryUpdater.java:1403)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:1571)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:1569)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:450)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:1569)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.scanFiles(RepositoryUpdater.java:1927)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$FileListWork.getDone(RepositoryUpdater.java:2105)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:1973)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:3554)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:3496)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:574)
   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:619)