java.lang.NullPointerException
        at com.sun.tools.javac.comp.Flow.scanCond(Flow.java:535)
        at com.sun.tools.javac.comp.Flow.visitIf(Flow.java:1088)
        at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1119)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.scanStat(Flow.java:502)
        at com.sun.tools.javac.comp.Flow.scanStats(Flow.java:510)
        at com.sun.tools.javac.comp.Flow.visitBlock(Flow.java:761)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:769)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.scanStat(Flow.java:502)
        at com.sun.tools.javac.comp.Flow.visitMethodDef(Flow.java:708)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:657)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.visitClassDef(Flow.java:657)
        at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:588)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.analyzeTree(Flow.java:1312)
        at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1131)
        at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1094)
        at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:446)
        at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:426)
        at org.netbeans.modules.java.source.parsing.JavacParser.moveToPhase(JavacParser.java:526)
        at org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:376)
        at org.netbeans.modules.java.source.parsing.JavacParser.getResult(JavacParser.java:149)
        at org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:192)
        at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:677)
        at java.util.concurrent.Executors$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)
An error occurred during parsing of '/home/jp159440/NetBeansProjects/ExpenceTracker/src/expencetracker/Main.java'. Please report a bug against java/source and attach dump file '/home/jp159440/.netbeans/dev/var/log/Main.dump'.