java.lang.NullPointerException at java.awt.LightweightDispatcher.retargetMouseEvent(Compiled Code) at java.awt.LightweightDispatcher.processMouseEvent(Compiled Code) at java.awt.LightweightDispatcher.dispatchEvent(Compiled Code) at java.awt.Container.dispatchEventImpl(Compiled Code) at java.awt.Window.dispatchEventImpl(Compiled Code) at java.awt.Component.dispatchEvent(Compiled Code) at java.awt.EventDispatchThread.run(Compiled Code)