2. Execute a query and open Visual Explain

3. Keep the cursor on 1 node so that a tooltip is generated.

4. Now move the cursor near the other nodes and you get NPE

java.lang.NullPointerException

        at com.aquafold.datastudio.queryanalyzer.oꒌꐄꍧꀔ.getToolTipText(Unknown Source)

        at javax.swing.ToolTipManager.checkForTipChange(ToolTipManager.java:622)

        at javax.swing.ToolTipManager.mouseMoved(ToolTipManager.java:594)

        at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:313)

        at java.awt.Component.processMouseMotionEvent(Component.java:6427)

        at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3293)

        at java.awt.Component.processEvent(Component.java:6151)

        at java.awt.Container.processEvent(Container.java:2083)

        at java.awt.Component.dispatchEventImpl(Component.java:4744)

        at java.awt.Container.dispatchEventImpl(Container.java:2141)

        at java.awt.Component.dispatchEvent(Component.java:4572)

        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)

        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4293)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)

        at java.awt.Container.dispatchEventImpl(Container.java:2127)

        at java.awt.Window.dispatchEventImpl(Window.java:2489)

        at java.awt.Component.dispatchEvent(Component.java:4572)

        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:710)

        at java.awt.EventQueue.access$400(EventQueue.java:82)

        at java.awt.EventQueue$2.run(EventQueue.java:669)

        at java.awt.EventQueue$2.run(EventQueue.java:667)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)

        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)

        at java.awt.EventQueue$3.run(EventQueue.java:683)

        at java.awt.EventQueue$3.run(EventQueue.java:681)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)

        at java.awt.EventQueue.dispatchEvent(EventQueue.java:680)

        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)

        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)

        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)