java - Java 再描画領域エラー

Question

これは時々発生するエラーですが、UI の動作が停止します

誰もそれを解決する方法を知っていますか?

このエラーは、通常、UI を再描画または更新するときに発生します。

     Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
            at javax.swing.plaf.synth.SynthLookAndFeel.paintRegion(Unknown Source)
            at javax.swing.plaf.synth.SynthLookAndFeel.update(Unknown Source)
            at javax.swing.plaf.synth.SynthPanelUI.update(Unknown Source)
            at javax.swing.JComponent.paintComponent(Unknown Source)
            at javax.swing.JComponent.paint(Unknown Source)
            at javax.swing.JComponent.paintChildren(Unknown Source)
            at javax.swing.JComponent.paint(Unknown Source)
            at javax.swing.JComponent.paintChildren(Unknown Source)
            at javax.swing.JComponent.paint(Unknown Source)
            at javax.swing.JComponent.paintChildren(Unknown Source)
            at javax.swing.JComponent.paint(Unknown Source)
            at javax.swing.JLayeredPane.paint(Unknown Source)
            at javax.swing.JComponent.paintChildren(Unknown Source)
            at javax.swing.JComponent.paintToOffscreen(Unknown Source)
            at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
            at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
            at javax.swing.RepaintManager.paint(Unknown Source)
            at javax.swing.JComponent.paint(Unknown Source)
            at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
            at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
            at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
            at java.awt.Container.paint(Unknown Source)
            at java.awt.Window.paint(Unknown Source)
            at javax.swing.RepaintManager$3.run(Unknown Source)
            at javax.swing.RepaintManager$3.run(Unknown Source)
            at java.security.AccessController.doPrivileged(Native Method)
            at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
            at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
            at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
            at 

javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
        at javax.swing.RepaintManager.access$1000(Unknown Source)
        at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
        at java.awt.event.InvocationEvent.dispatch(Unknown Source)
        at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.awt.EventQueue.access$200(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.awt.EventQueue$3.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)