Java Static Synchronization

When Synchronization is applied on a static Member or a static block, the lock is performed on the Class and not on the Object, while in the case of a Non-static block/member, lock is applied on the Object and not on class.

Java Static Synchronization : Example

class TableClass {
    synchronized static void displayTable(int n) {
        for (int i = 1; i <= 4; i++) {
            System.out.println(n * i);
            try {
                Thread.sleep(200);
            } catch (Exception e) {
            }
        }
    }
}
class MyThread1 extends Thread {
    public void run() {
        TableClass.displayTable(1);
    }
}
class MyThread2 extends Thread {
    public void run() {
        TableClass.displayTable(10);
    }
}
class MyThread3 extends Thread {
    public void run() {
        TableClass.displayTable(100);
    }
}
class MyThread4 extends Thread {
    public void run() {
        TableClass.displayTable(1000);
    }
}
class SynchronizeExample {
    public static void main(String args[]) {
        MyThread1 t1 = new MyThread1();
        MyThread2 t2 = new MyThread2();
        MyThread3 t3 = new MyThread3();
        MyThread4 t4 = new MyThread4();
        t1.start();
        t2.start();
        t3.start();
        t4.start();
    }
}

Output :