Does wait () ?

[Sid Robin]

does wait() relinquish currently executing object's lock ? in a synchronized method ? I am hoping the answer to be yes with a little Explanation about the protocols between notify and wait ?

[Venkat Kanneganti]

whenever wait() method is encountered by thread which releases monitor(lock) of Object ,go to wait utill some other thread enters same objects monitor and calls notify()

[Peter Ricke]

does wait() relinquish currently executing object's lock ?

the thread calling wait() does not need the lock of the currently executing object but needs the lock of the object whichs wait()-method it is calling.

 
class synctest{
Object o1 = new Object();

 void sync(){
 
 
synchronized (o1){
sync2();
}
}
 
synchronized void sync2(){
try{
o1.wait();
}
catch (InterruptedException e){
System.err.println("Error");
}

}

}
   

Here sync2() can be excecuted only by calling sync(), where the thread gets o1's Lock. direct calling of sync() results in java.lang.IllegalMonitorStateException