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From: markspace <markspace@nospam.nospam>
Newsgroups: comp.lang.java.programmer
Subject: Re: question about casting and inheritance
Date: Thu, 09 Jan 2014 13:00:19 -0800
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On 1/9/2014 10:48 AM, marc.at.compass@gmail.com wrote:
> 		a=b;
> 		b=(B)a;

> Why is it the line b=(B)a; doesn't give me a ClassCastException during runtime?

Because the line above assigns 'b' to 'a'.  It's actually the only 
interesting thing inside the program.  The second line with the cast is 
a tautology: it casts 'b' to a 'B'.

A more explicit naming scheme for your variables would help a lot to 
understand this.