Witam

Piszac program w Javie natknalem sie na pewien problem:
taki kod wywala blad

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        File[] filesFROM = new File(pathFROM).listFiles(new PHPFilter());
        File[] filesTO   = new File(pathTO).listFiles(new PHPFilter());
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natomiast taki juz dziala OK

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        File[] filesFROM = new File(pathFROM).listFiles(new PHPFilter());
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tresc bledu:

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Exception in thread "AWT-EventQueue-0" java.lang.Error: java.lang.reflect.InvocationTargetException
        at org.jdesktop.application.ApplicationAction.actionFailed(ApplicationAction.java:859)
        at org.jdesktop.application.ApplicationAction.noProxyActionPerformed(ApplicationAction.java:665)
        at org.jdesktop.application.ApplicationAction.actionPerformed(ApplicationAction.java:698)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2012)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2335)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:253)
        at java.awt.Component.processMouseEvent(Component.java:6268)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
        at java.awt.Component.processEvent(Component.java:6033)
        at java.awt.Container.processEvent(Container.java:2045)
        at java.awt.Component.dispatchEventImpl(Component.java:4629)
        at java.awt.Container.dispatchEventImpl(Container.java:2103)
        at java.awt.Component.dispatchEvent(Component.java:4455)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4633)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4297)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4227)
        at java.awt.Container.dispatchEventImpl(Container.java:2089)
        at java.awt.Window.dispatchEventImpl(Window.java:2517)
        at java.awt.Component.dispatchEvent(Component.java:4455)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:649)
        at java.awt.EventQueue.access$000(EventQueue.java:96)
        at java.awt.EventQueue$1.run(EventQueue.java:608)
        at java.awt.EventQueue$1.run(EventQueue.java:606)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:116)
        at java.awt.EventQueue$2.run(EventQueue.java:622)
        at java.awt.EventQueue$2.run(EventQueue.java:620)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:619)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.jdesktop.application.ApplicationAction.noProxyActionPerformed(ApplicationAction.java:662)
        ... 37 more
Caused by: java.lang.NullPointerException
        at java.io.File.<init>(File.java:239)
        at czysciciel.CzyscicielView.execute(CzyscicielView.java:357)
        ... 42 more
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tzn. jesli uzyje File raz to dzialaOK, a jak chce uzyc drugi to juz jest zle. Nie bardzo wiem dlaczego, skoto uzywam do tego celu innych zmiennych

Nie bylo pytania. Juz wiem.