java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location

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  • java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location at java.awt.Component.getLocationOnScreen_NoTreeLock(Component.java:1507) at java.awt.Component.getLocationOnScreen(Component.java:1481) at javax.swing.Autoscroller.mouseDragged(Autoscroller.java:79) at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:2775) at java.awt.Component.processEvent(Component.java:4901) at java.awt.Container.processEvent(Container.java:1569) at java.awt.Component.dispatchEventImpl(Component.java:3615) at java.awt.Container.dispatchEventImpl(Container.java:1627) at java.awt.Component.dispatchEvent(Component.java:3477) at javax.swing.plaf.basic.BasicTableUI$MouseInputHandler.repostEvent(BasicTableUI.java:475) at javax.swing.plaf.basic.BasicTableUI$MouseInputHandler.mouseDragged(BasicTableUI.java:554) at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:262) at java.awt.Component.processMouseMotionEvent(Component.java:5148) at javax.swing.JComponent.superProcessMouseMotionEvent(JComponent.java:2785) at javax.swing.Autoscroller$AutoScrollTimerAction.actionPerformed(Autoscroller.java:52) at javax.swing.Timer.fireActionPerformed(Timer.java:271) at javax.swing.Timer$DoPostEvent.run(Timer.java:201) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:178) at java.awt.EventQueue.dispatchEvent(EventQueue.java:454) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:141) at java.awt.Dialog$1.run(Dialog.java:540) at java.awt.Dialog.show(Dialog.java:561)
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