Synchronized Static Method

[Sun LiWei]

I am confused by synchronized on static method,just like this:

 
class A{
   static Vector pool=new Vector();
   synchronized static Object getObject(){
    //return a object from pool
   }
}

My question is:
Does the object pool synchronize???
In my mind,synchronized on method

synchronized [return type] method(){
  //do something...
}

is the same as

[return type] method(){
  synchronized(this){
  //do something...
  }
}

But in static method,the keyword "this" is not allowed.So,what exactly "synchronized static method()" mean???

[Barry Gaunt]

When you synchronize on a static method you are placing a lock on the class for the duration of the static method.
-Barry

[Santosh Terkhedkar]

Hi
Visit this link
http://www.javaworld.com/javaworld/jw-04-1999/jw-04-toolbox.html
read critical section in java Threads.
I think this will certainly help you solve your problem.
Cheers,
Santosh Terkhedkar.

[Valentin Crettaz]

synchronizing a static method locks on the java.lang.Class object representing the class, for instance in:

public class Test {
   public static synchronized void method(){
   }
}

is the same as

public class Test {
   public static void method(){
      synchronized(Test.class){
      }
   }
}

[Jose Botella]

When a class or interface is loaded a java.lang.Class instance is created to represent it. You can access references to them via the Class literals