Query:lock by virtual object!

[Jack Dowson]

Hello Everybody:
I saw a demo as follow shows how to use virtual object to lock key
resources in order to maintain synchronizing if there are several threads.

class ClassName implements Runnable{
String str = " ";
public void run(){
...
synchronized(str){...}
}
}

I just can't understand how it works?

Any help will be greatly appreciated!

Dowson!

 

[Jack Dowson]

Jack Dowson дµÀ:

Hello Everybody:
I saw a demo as follow shows how to use virtual object to lock key
resources in order to maintain synchronizing if there are several threads.

class ClassName implements Runnable{
String str = " ";
public void run(){
...
synchronized(str){...}
}
}

I just can't understand how it works?

Any help will be greatly appreciated!

Dowson!

This question is really stupid!

Dowson!

 

[Z.]

Hello Everybody:
I saw a demo as follow shows how to use virtual object to lock key
resources in order to maintain synchronizing if there are several threads.

class ClassName implements Runnable{
String str = " ";
public void run(){
...
synchronized(str){...}
}
}

I just can't understand how it works?

Any help will be greatly appreciated!

Dowson!

http://java.sun.com/docs/books/tutorial/essential/concurrency/index.html,
also:
http://java.sun.com/docs/books/tutorial/essential/concurrency/syncmeth.html