java.lang.NullPointerException
        at org.netbeans.modules.java.editor.semantic.TokenList$2.run(TokenList.java:127)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1362)
        at org.netbeans.modules.java.editor.semantic.TokenList.moveToOffset(TokenList.java:95)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitIdentifier(SemanticHighlighter.java:875)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitIdentifier(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1689)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at com.sun.source.util.TreeScanner.visitMemberSelect(TreeScanner.java:332)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMemberSelect(SemanticHighlighter.java:556)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMemberSelect(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1661)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMethodInvocation(SemanticHighlighter.java:834)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMethodInvocation(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1312)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at com.sun.source.util.TreeScanner.visitParenthesized(TreeScanner.java:288)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitParenthesized(SemanticHighlighter.java:988)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitParenthesized(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCParens.accept(JCTree.java:1425)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.visitBinary(TreeScanner.java:309)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitBinary(SemanticHighlighter.java:1252)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitBinary(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCBinary.accept(JCTree.java:1553)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitVariable(SemanticHighlighter.java:1149)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitVariable(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:724)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:100)
        at com.sun.source.util.TreeScanner.visitBlock(TreeScanner.java:159)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:778)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMethod(SemanticHighlighter.java:963)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMethod(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:678)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:80)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:100)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitClass(SemanticHighlighter.java:1303)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitClass(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:605)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:100)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitCompilationUnit(SemanticHighlighter.java:790)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitCompilationUnit(SemanticHighlighter.java:440)
        at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:483)
        at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
        at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:91)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter.process(SemanticHighlighter.java:279)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter.process(SemanticHighlighter.java:256)
        at org.netbeans.modules.java.editor.semantic.SemanticHighlighter.run(SemanticHighlighter.java:194)
        at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:690)
        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$Worker.runTask(ThreadPoolExecutor.java:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
        at java.lang.Thread.run(Thread.java:619)