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From "Noel J. Bergman" <>
Subject RE: [net] minimum jdk version?
Date Fri, 07 May 2004 05:42:36 GMT
> BTW, you should always compile the release jar on JDK1.3,
> as a 1.4 built one often doesn't run on JDK 1.2/1.3.

> Do you have a reference to this documented somewhere?  I had not heard

I'm not going to look up specific methods, but the issue is that if JDK 1.3
has a method Class#f(Object), and JDK 1.4 has Class#f(Derived), then the
following is not compatible: f(new Derived).  The later JDK would use the
more specific method signature, which will not be present in the earlier
JRE, so you must compile with the older JDK.

	--- Noel

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