java.lang.StringIndexOutOfBoundsException: String index out of range: 0 at java.lang.String.charAt(String.java:658) at org.netbeans.api.java.source.TreeUtilities.decodeIdentifierInternal(TreeUtilities.java:1091) at org.netbeans.api.java.source.TreeUtilities.decodeIdentifier(TreeUtilities.java:1076) at org.netbeans.modules.java.editor.semantic.TokenList$4.run(TokenList.java:222) at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1391) at org.netbeans.modules.java.editor.semantic.TokenList.identifierHere(TokenList.java:207) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitIdentifier(SemanticHighlighter.java:828) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitIdentifier(SemanticHighlighter.java:392) at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:2017) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at com.sun.source.util.TreeScanner.visitMemberSelect(TreeScanner.java:346) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMemberSelect(SemanticHighlighter.java:501) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMemberSelect(SemanticHighlighter.java:392) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1903) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at com.sun.source.util.TreeScanner.visitMemberSelect(TreeScanner.java:346) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMemberSelect(SemanticHighlighter.java:501) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitMemberSelect(SemanticHighlighter.java:392) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1903) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at com.sun.source.util.TreeScanner.visitImport(TreeScanner.java:125) at com.sun.tools.javac.tree.JCTree$JCImport.accept(JCTree.java:580) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at com.sun.source.util.TreeScanner.scan(TreeScanner.java:91) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitCompilationUnit(SemanticHighlighter.java:725) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter$DetectorVisitor.visitCompilationUnit(SemanticHighlighter.java:392) at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:551) at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68) at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:94) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter.process(SemanticHighlighter.java:239) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter.process(SemanticHighlighter.java:216) at org.netbeans.modules.java.editor.semantic.SemanticHighlighter.run(SemanticHighlighter.java:174) at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:568) at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:744) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)