How to print number 1 to 31 with three threads in JAVA?

Question

I am trying to print number 1 to 31 In order with Three Threads. When the number became 31, I want to output "(current Thread) defeated." Also the number can be output up to 3.

So I want to output like

Thread One print: 1 2 Thread Two print: 3 4 5 Thread Three print: 6 7 Thread One print: 8...... Thread Three print: 31 Thread Three defeat

and program ends.

    public class MyRunnable implements Runnable {
    Stack sta = new Stack();
    
    public void run() {
        while(sta.getStack()<=31){
            int stack = 1;
            stack++;
            
            sta.setStack(stack);
            
            System.out.println(Thread.currentThread().getName() + "print: "+ stack);
            
        }
        
    }

}
////////////

        public class Stack {
        private int stack = 1;
        
        public synchronized void setStack (int stack) {
            for(int cnt = 1; cnt<=31; cnt ++) {
                
            try {
                 
                Thread.sleep(100);
                
            } catch (InterruptedException e) {  
                
            }
            
        
            System.out.println(Thread.currentThread().getName() + "defeated.");
            
        }
            
    }
        public int getStack() {
            return this.stack;
        }
    
    }

////////////////////

    public class ThreadTest {
    public static void main(String[] args) {
        
        Runnable threadRun = new MyRunnable();
        
        Thread myThread1 = new Thread(threadRun);
        Thread myThread2 = new Thread(threadRun);
        Thread myThread3 = new Thread(threadRun);
        
        myThread1.setName("Thread One");
        myThread2.setName("Thread Two");
        myThread3.setName("Thread Three");
        

        myThread1.start();
        myThread2.start();
        myThread3.start();


    }

}

I made 3 classes. But it prints only "Thread One output defeat" I don't know what is problem. It won't print Thread in order. I'm not good at using this platform so sorry for looking weird.

Answer 1

I tried a bit and came up with this:

public class MyRunnable implements Runnable {
Stack sta = new Stack();

@Override
public void run() {
    while (sta.getStack() <= 31) {
        int stack = sta.getStack() + 1;
        sta.setStack(stack);

        if (stack <= 31) {
            System.out.println(Thread.currentThread().getName() + " print: " + stack);
        }
    }
}
}

public class Stack {
private int stack = 0;

public synchronized void setStack(int stack) {
    this.stack = stack;
    try {
        Thread.sleep(100);
    } catch (InterruptedException e) {
    }
    if (stack > 31) {
        System.out.println(Thread.currentThread().getName() + " defeated.");
    }
}

public synchronized int getStack() {
    return this.stack;
}
}

public class ThreadTest {
public static void main(String[] args) {

    Runnable threadRun = new MyRunnable();

    Thread myThread1 = new Thread(threadRun);
    Thread myThread2 = new Thread(threadRun);
    Thread myThread3 = new Thread(threadRun);

    myThread1.setName("Thread One");
    myThread2.setName("Thread Two");
    myThread3.setName("Thread Three");

    myThread1.start();
    myThread2.start();
    myThread3.start();

}
}