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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: overriding with different return value type
Date: Thu, 16 Jul 2015 10:04:47 -0400
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On 07/16/2015 09:04 AM, Xue Feng wrote:
> According to the JDK manual, overriding requirs that
> (1) the same signature
> (2) the same return value type
> The following example demonstrates it:

I'm not sure what the JDK manual is.

The Java® Language Specification
Java SE 8 Edition has at least this to say
about overriding:

<http://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.4.8>