SEVERE [org.openide.util.RequestProcessor]
org.openide.filesystems.FileAlreadyLockedException: C:/Documents and Settings/Admin/My Documents/NetBeansProjects/JavaApplication6/src/javaapplication6/NewJFrame.java
        at org.netbeans.modules.masterfs.Delegate.lock(Delegate.java:210)
        at org.netbeans.modules.masterfs.MasterFileObject.lock(MasterFileObject.java:192)
        at org.openide.filesystems.FileObject.getOutputStream(FileObject.java:521)
        at org.netbeans.modules.refactoring.spi.BackupFacility$DefaultImpl.copy(BackupFacility.java:272)
        at org.netbeans.modules.refactoring.spi.BackupFacility$DefaultImpl.restore(BackupFacility.java:231)
        at org.netbeans.modules.refactoring.spi.BackupFacility$DefaultHandle.restore(BackupFacility.java:168)
        at org.netbeans.modules.refactoring.java.plugins.RetoucheCommit.rollback(RetoucheCommit.java:98)
Caused: java.lang.RuntimeException
        at org.netbeans.modules.refactoring.java.plugins.RetoucheCommit.rollback(RetoucheCommit.java:100)
        at org.netbeans.modules.refactoring.api.RefactoringSession.undoRefactoring(RefactoringSession.java:154)
        at org.netbeans.modules.refactoring.spi.impl.UndoManager$SessionUndoItem.undo(UndoManager.java:582)
        at org.netbeans.modules.refactoring.spi.impl.UndoManager.undo(UndoManager.java:214)
        at org.netbeans.modules.refactoring.spi.impl.UndoAction.performAction(UndoAction.java:96)
        at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:118)
        at org.netbeans.modules.openide.util.ActionsBridge$ActionRunnable.actionPerformed(ActionsBridge.java:111)
        at org.netbeans.core.ModuleActions.invokeAction(ModuleActions.java:104)
        at org.netbeans.modules.openide.actions.ActionsBridgeImpl.invokeAction(ActionsBridgeImpl.java:52)
        at org.netbeans.modules.openide.util.ActionsBridge$ActionRunnable.doRun(ActionsBridge.java:102)
        at org.netbeans.modules.openide.util.ActionsBridge$1.run(ActionsBridge.java:71)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)