[2692] in java-interest
Subclassing applets doesn't work ??
daemon@ATHENA.MIT.EDU (Bob Beck)
Tue Oct 10 21:54:59 1995
Date: Tue, 10 Oct 95 17:04 PDT
To: java-interest@java.sun.com
From: Bob Beck <rbk@ibeam.jf.intel.com>
I've been using Java Alpha3 on NT, and ran into a snag. I'm trying to make
a customized version of one of the TickerTape classes. So, following good
OO form, I made a subclass that adds the new behaviour. However, it doesn't
look like HotJava can load an applet class if it's a subclass of another
Applet subclass... If I change my <APP> tag to reference the superclass (a
direct subclass of Applet), it works. If I use the customized one (a
"grandchild" subclass of Applet), it fails to load with messages like the
following in the weblog:
DocumentSwitcher find class RbkTicker
Opening stream to: http://rbk.jf.intel.com/JavaFuss/classes/RbkTicker.class
to get RbkTicker
Opening stream to: http://rbk.jf.intel.com/classes/RbkTicker.class to get
RbkTicker
Applet RbkTicker from http://rbk.jf.intel.com/JavaFuss/. not loaded.
I followed some of the code in HotJava and the class loader, and I think
it's dying in ClassLoader.defineClass() due to an exception.
Am I missing something (I hope ;-) or is this a serious problem?
--
Bob Beck rbk@ibeam.intel.com CompuServe: 71674,106
Intel Corporation (503)264-8856 AOL: RDBeck
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