java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException	at oracle.forms.demos.TimeoutPJC._addMouseListeners(TimeoutPJC.java:209)	at oracle.forms.demos.TimeoutPJC.init(TimeoutPJC.java:181)	at oracle.forms.handler.UICommon.instantiate(Unknown Source)	at oracle.forms.handler.UICommon.onCreate(Unknown Source)	at oracle.forms.handler.JavaContainer.onCreate(Unknown Source)	at oracle.forms.engine.Runform.onCreateHandler(Unknown Source)	at oracle.forms.engine.Runform.processMessage(Unknown Source)	at oracle.forms.engine.Runform.processSet(Unknown Source)	at oracle.forms.engine.Runform.onMessageReal(Unknown Source)	at oracle.forms.engine.Runform.onMessage(Unknown Source)	at oracle.forms.engine.Runform.sendInitialMessage(Unknown Source)	at oracle.forms.engine.Runform.startRunform(Unknown Source)	at oracle.forms.engine.Main.createRunform(Unknown Source)	at oracle.forms.engine.Main.start(Unknown Source)	at sun.applet.AppletPanel.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)