# Friday, 04 November 2011
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Java Method Overriding Is FUBAR Part 3 of ∞

For another example of weird JDK 7 behavior, start with the code from part 2 and make B.foo final.

When you run that you get:


So now C.foo suddenly doesn't override B.foo. This also violates the spec, because when a method that would have been overridden is marked final the verifier should fail to load the class. This shows that the verifier and vtable layout code have different ideas about method overriding semantics.

Friday, 04 November 2011 07:33:47 (W. Europe Standard Time, UTC+01:00)  #    Comments [0]
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I apologize for the lameness of this, but the comment spam was driving me nuts. In order to be able to post a comment, you need to answer a simple question. Hopefully this question is easy enough not to annoy serious commenters, but hard enough to keep the spammers away.

Anti-Spam Question: What method on java.lang.System returns an object's original hashcode (i.e. the one that would be returned by java.lang.Object.hashCode() if it wasn't overridden)? (case is significant)

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