Untitled

package synchronization;

class TestClass {
    public void f0() {
        for (int i = 0; i < 5; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public synchronized void f1() {
        for (int i = 0; i < 5; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public synchronized void f2() {
        for (int i = 0; i < 5; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    public synchronized static void fs() {
        for (int i = 0; i < 5; i++) {
            System.out.println(Thread.currentThread().getName() + " " + i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

}

public class SynchronizedTest {
    public static void main(String[] args) {
        TestClass t1 = new TestClass();
        TestClass t2 = new TestClass();
        // new Thread(t1::f1, "T1").start();
        // new Thread(t2::f1, "T2").start();
        new Thread(t1::f2, "T2").start();
        new Thread(t1::f0, "T3").start();
        // new Thread(TestClass::fs, "T1").start();
        // new Thread(TestClass::fs, "T2").start();
    }
}