JDK-6999415 : Client JDK-7: Liveconnect(Java > JS) is broken with latest bundles
  • Type: Bug
  • Component: deploy
  • Sub-Component: plugin
  • Affected Version: 7
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2010-11-11
  • Updated: 2011-05-18
  • Resolved: 2011-05-18
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JDK 7
7 b121Fixed
Related Reports
Relates :  
JDK-6998409 - Investigate LiveConnect for Applet2/Applet support
Relates :  
JDK-6984728 - FF3.5/FF3. : Javascript error is getting thrown while running some liveconnect scenarios (Java > JS)
Relates :  
JDK-6510434 - Javascript to Java callback doesn't work
Description
Liveonnect is broken with latest JDK-7 client bundles
Steps to reproduce:
1) Install JRE bundles from following location
http://rehudson.sfbay.sun.com:8080/hudson/view/Client/view/7-client%20Deploy/job/7-client-deploy-2-product-windows-i586/ws/7client-lastSuccessful/build/windows-i586/bundles/
2) try to load any of the following applets inside the browser
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ojiliveconnect/src/HashTableTest.html
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ojiliveconnect/src/RoundTripSetElem.html
http://sqeweb.sfbay.sun.com/deployment2/jitu/plugInTestsNoHarness/Liveconnect/html/direct/DirectTest.html
If following exception is getting thrown then bug is reproduced
java.lang.NullPointerException
	at sqe.test.HashTableTest.start(HashTableTest.java:85)
	at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.start(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
java.lang.RuntimeException: java.lang.NullPointerException
	at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.start(Unknown Source)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
	at sqe.test.HashTableTest.start(HashTableTest.java:100)
	... 3 more
Exception: java.lang.RuntimeException: java.lang.NullPointe
Comments
EVALUATION Regression introduces with CR6996627 pushback, where AppletContextImpl is moved into AWTAppletAdapter and no longer implements JSContext, which breaks te assumption that Applet.getAppletContext() method will return a JSObject instance we implemented in JSObject.java::getWindow() method. We should implement a better approach to retrieve the JSContext associated with an applet, and we should not assume that applet will be always executed in an environment support JSObject. JSObject is supported under with browser plugins, but not necessary other type of applet host such as AppletViewer.
16-11-2010