Odd even number printing using thread

Question

Odd even number printing using thread.Create one thread class, two instance of the thread. One will print the odd number and the other will print the even number.

Answer 1

Here's my solution without any waits or notify. wait() and notify()/notifyAll() ,
I dont see any reason to use them for this problem statement.

package threading;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class EvenOddPrinting {

    int count=0;
    boolean isOdd = false;

    public static void main(String[] args) {
        ExecutorService exec = Executors.newCachedThreadPool();
        EvenOddPrinting obj = new EvenOddPrinting();
        exec.submit(new EvenPrinter(obj));
        exec.submit(new OddPrinter(obj));
        exec.shutdown();



    }

}

class EvenPrinter implements Runnable{
    EvenOddPrinting obj;
    public EvenPrinter(EvenOddPrinting obj) {
        this.obj=obj;
    }

    @Override
    public void run() {
        while(obj.count < 100){
            if(!obj.isOdd){
                System.out.println("Even:"+obj.count);
                obj.count++;
                obj.isOdd = true;
            }
        }

    }
}


class OddPrinter implements Runnable{

    EvenOddPrinting obj;
    public OddPrinter(EvenOddPrinting obj) {
        this.obj = obj;
    }

    @Override
    public void run() {
        while(obj.count < 100){
            if(obj.isOdd){
                System.out.println("Odd:"+obj.count);
                obj.count++;
                obj.isOdd = false;
            }
        }
    }
}