Why we use static and synchronized in method for single thread model example:

Why we use static and synchronized in method for single
thread model
example:
public static synchronized add(){}

Question Posted / rdharmendra

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Why we use static and synchronized in method for single thread model example: public static syn..

Answer / deepak verma

Synchronized static method means, the lock belongs to the
class, no other thread can access any static synchronized
method of this class when one thread already holds the lock
of that class.

This class lock is independent of locks on its object. For eg :

Class A {
public static synchronized add() {}

public synchronized void someMethod() {}
}

Here add() and someMethod() can be called concurrently as
add() is having class lock whereas someMethod() having
object lock.

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Why we use static and synchronized in method for single thread model example: public static syn..

Answer / sameer

Ststic means it belongs to class.When u call a syncronized
method u keep the luck of that class.

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4 No

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