synchronizing a method

[Mathew Kuruvilla]

When we use
public class test {
synchronized aMethod1() {
}
aMethod2() {
}
}
for a method, we obtain a lock on the instance of the class where that code is executing. Am I right?
In this case, can we execute a call aMethod1 and aMethod2 concurrently and have them both execute the code concurently? Or would aMethod2 have to wait till that instance completes the method call to aMethod1?
Thanks.

[Thomas Thomas]

Hi
u r right the lock is obtained on instance of the class /Object..
u can execute a sync method & non sync method same time using multiple threads.
but if a class has two sync methods only one can be run at a time.
if u r using a complex method in which a small part is to be synchrinized .u can synchronized blocks
synchronized(this/object){
}
u can use blocks of code in method rather than sync the whole method
thomas