why wouldn't synchronization work in lazy initialization

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puzzlecracker - 04 May 2006 18:07 GMT

class Foo{

private static Foo foo=null;

public static Foo getFoo(){

if(foo==null){
synchronized(Foo.class){
if(foo==null)
foo=new Foo();
}
}
return foo;
}
private Foo(){}
}

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Thomas Hawtin - 04 May 2006 17:41 GMT

> if(foo==null){
> synchronized(Foo.class){
> if(foo==null)
> foo=new Foo();
> }
> }

http://www.google.com/search?q=java+double-checked+locking

Tom Hawtin

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Unemployed English Java programmer
http://jroller.com/page/tackline/

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Eric Sosman - 04 May 2006 18:24 GMT

puzzlecracker wrote On 05/04/06 13:07,:

> class Foo{
>
[quoted text clipped - 12 lines]
> private Foo(){}
> }

Go to <http://www.google.com/>, type "double checked
locking" (with the quotes) into the form, and click on
"I'm feeling lucky."

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Eric.Sosman@sun.com

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