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From: Wanja Gayk <brixomatic@yahoo.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Usefulness of "final" (Was: Re: Inserting In a List)
Date: Sun, 7 Apr 2013 17:28:23 +0200
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In article <kjqduh$3m4$1@dont-email.me>, markspace 
(markspace@nospam.nospam) says...

> > "final" is not necessary to get a thread safe immutable object either,
> 
> Well, according to Brian Goetz it is.  Check the section on immutability 
> (page 47 I think) where he lists the three requirements of immutable 
> objects in Java.  "Use final fields" (paraphrased) is the first one.
> [..] 
> (I realize Brian Goetz takes that statement back in a footnote. 

Which he does because he knows what you know and what I know that this 
class...

public class Foo{
 private int value;
 private Foo(int value){this.value=value;}
 public static Foo createFoo(int value){return new Foo(value);}
 public int getValue(){return value;}
}

..is both immutable, thread safe and can't be overridden either, without 
having a single "final" in it. This is where your whole argument falls 
apart.

Kind regards,
-Wanja-

-- 
..Alesi's problem was that the back of the car was jumping up and down 
dangerously - and I can assure you from having been teammate to 
Jean Alesi and knowing what kind of cars that he can pull up with, 
when Jean Alesi says that a car is dangerous - it is. [Jonathan Palmer]

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