3 threads to print alternate values in sequence in java

Write a java program to print 3 threads alternate values in sequence. 

Expected result: 
Thread[Thread1,5,main] 1
Thread[Thread2,5,main] 2
Thread[Thread3,5,main] 3
Thread[Thread1,5,main] 4
Thread[Thread2,5,main] 5
Thread[Thread3,5,main] 6
Thread[Thread1,5,main] 7
Thread[Thread2,5,main] 8
Thread[Thread3,5,main] 9

Solution :-

package com.tutorialsdesk.Thread;
import java.util.concurrent.atomic.AtomicInteger;

public class ThreeThreadsOrderedLockLess {

        AtomicInteger sharedOutput = new AtomicInteger(0);
        private Object object = new Object();
        public static void main(String args[]) throws InterruptedException{
                ThreeThreadsOrderedLockLess t = new ThreeThreadsOrderedLockLess();
                MyThread t1 = t.new MyThread(0);
                MyThread t2 = t.new MyThread(1);
                MyThread t3 = t.new MyThread(2);

        Thread ts1 = new Thread(t1);
        Thread ts2 = new Thread(t2);
        Thread ts3 = new Thread(t3);
        ts1.setName("Thread1");
        ts2.setName("Thread2");
        ts3.setName("Thread3");
        ts1.start();
        ts2.start();
        ts3.start();
                
        }


        private class MyThread implements Runnable{
                private final int threadPosition;
                public MyThread(int threadPosition) {
                        super();
                        this.threadPosition = threadPosition;
                }
        
                @Override
                public void run() {
                        while (sharedOutput.get() < 9) {

                synchronized (object) {

                    if (sharedOutput.get() % 3 == this.threadPosition) {

                        if(sharedOutput.get() < 9)
                        System.out.println(Thread.currentThread()+"  "+
sharedOutput.incrementAndGet());
                    }
                }
            }
                }
        }        
}

Output:

Thread[Thread1,5,main] 1
Thread[Thread2,5,main] 2
Thread[Thread3,5,main] 3
Thread[Thread1,5,main] 4
Thread[Thread2,5,main] 5
Thread[Thread3,5,main] 6
Thread[Thread1,5,main] 7
Thread[Thread2,5,main] 8
Thread[Thread3,5,main] 9

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