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Date: Sat, 20 Apr 2013 17:02:39 +0100
From: lipska the kat <"nospam at neversurrender dot co dot uk">
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Subject: Re: A small exercise
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On 20/04/13 14:11, Stefan Ram wrote:
>    Try to predict the behavior of the execution or compilation
>    of the following code!
>
> public class Main
> { final int a; final int b;
>    Main(){ this.a = 0; Main.this.b = 0; }
>    public static void Main( final java.lang.String[] args )
>    { new Main(); }}
>
>    (I made this observation while programming something else
>    using Oracle JDK 7, but I have not read the JLS about it yet.)

open-jdk6 and open-jdk7

I think that logically, Main.this.b refers to the enclosing *instance* 
which implies that the class has been instantiated, final fields can 
only be initialized once in a constructor so trying to (logically) 
assign a value to a final variable after instantiation is illegal.

I think :-|

If you remove the final modifier from b then the code compiles, but then 
you know this already.


lipska


-- 
Lipska the KatŠ: Troll hunter, sandbox destroyer
and farscape dreamer of Aeryn Sun