Java7 Update21 Applet Issue

Question

I am facing the Issue while running the application with Applets,Could some one please help me regarding this Issue.

I am running in IE8 and Java7Update21,Could some one help this Issue.

Exception in thread "Thread-15" java.lang.NullPointerException
    at sun.plugin2.applet.Plugin2Manager.checkUntrustedAccess(Unknown Source)
    at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.isLiveconnectCallAllowed(Unknown Source)
    at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.doObjectOp(Unknown Source)
    at sun.plugin2.main.client.LiveConnectSupport.doObjectOp(Unknown Source)
    at sun.plugin2.main.client.MessagePassingJSObject.waitForReply(Unknown Source)
    at sun.plugin2.main.client.MessagePassingJSObject.call(Unknown Source)

Answer 1

The issue stated above only occurs when the applet calls a javascript function which in turn makes a call to the applet. For example the applet calls a success javascript callback method which makes some GUI stuff in the browser and then calls the applet so that the applet can prepare for the next processing.