wat is class level lock and object level lock

Question Posted / siva thimmannagari

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wat is class level lock and object level lock..

Answer / ask

Class Lock - If a static method is marked as Synchrnozied
and called by a Thread, the whole Class will be locked
until the method execution completed.

Object Lock - If a non-static method is marked as
Synchronzied and called by a Thread, the current instance
(Object) will be locked util the method execution completed.

Is This Answer Correct ?

53 Yes

5 No

wat is class level lock and object level lock..

Answer / michael selvan

Class Lock - If a static method is marked as Synchrnozied
and called by a Thread, the whole Class will be locked
until the method execution completed.

Note : If we declare as a any static variables or methods
those will be stored in class area. So, if the method is
synchronized static . It'll lock the complete class.

Is This Answer Correct ?

4 Yes

0 No

wat is class level lock and object level lock..

Answer / sitaram

class StringSample{
static void method1(){
System.out.println("classlevel...");
}
void method2(){
System.out.println("object level...");
}

}
public class StringDemo{
public static void main(String[] args) {
StringSample.method1(); // class level
// StringSample.method2(); //error
StringSample s2 = new StringSample();
s2.method2(); //object level

}
}

Is This Answer Correct ?

8 Yes

18 No

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