java.lang.NullPointerException
	at org.netbeans.modules.refactoring.java.plugins.EncapsulateFieldRefactoringPlugin$Encapsulator.visitClass(EncapsulateFieldRefactoringPlugin.java:561)
	at org.netbeans.modules.refactoring.java.plugins.EncapsulateFieldRefactoringPlugin$Encapsulator.visitClass(EncapsulateFieldRefactoringPlugin.java:513)
	at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:606)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
	at com.sun.source.util.TreeScanner.scan(TreeScanner.java:90)
	at org.netbeans.modules.refactoring.java.plugins.EncapsulateFieldRefactoringPlugin$Encapsulator.visitCompilationUnit(EncapsulateFieldRefactoringPlugin.java:545)
	at org.netbeans.modules.refactoring.java.plugins.EncapsulateFieldRefactoringPlugin$Encapsulator.visitCompilationUnit(EncapsulateFieldRefactoringPlugin.java:513)
	at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:484)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:67)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$TransformTask.run(JavaRefactoringPlugin.java:339)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$TransformTask.run(JavaRefactoringPlugin.java:309)
	at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:953)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.processFiles(JavaRefactoringPlugin.java:244)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:256)
	at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.createAndAddElements(JavaRefactoringPlugin.java:268)
	at org.netbeans.modules.refactoring.java.plugins.EncapsulateFieldsPlugin.prepare(EncapsulateFieldsPlugin.java:190)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:380)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:202)
	at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:765)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)