Print odd and even numbers using two threads in Java

I was asked below question in an interview where I need to print out even and odd numbers using two threads so I came up with below code one without synchronization and other with synchronization.

/**
 * Without synchronization
 *
 */
class Print {
  private static final int MAX = 10;
  private static int count = 1;
  private boolean isOdd = true;

  public void printEven() {
    while (true) {
      if (count > MAX)
        break;
      if (!isOdd) {
        System.err.println(Thread.currentThread().getName() + " : " + count++);
        isOdd = true;
      }
    }
  }

  public void printOdd() {
    while (true) {
      if (count > MAX)
        break;
      if (isOdd) {
        System.err.println(Thread.currentThread().getName() + " : " + count++);
        isOdd = false;
      }
    }
  }
}

/**
 * Using synchronization
 *
 */
class Print2 {
  private static final int MAX = 10;
  private static int count = 1;
  private Object obj = new Object();

  public void printEven() {
    while (true) {
      if (count > MAX)
        break;
      synchronized (obj) {
        System.err.println(Thread.currentThread().getName() + " : " + count++);
        obj.notify();
        try {
          obj.wait();
        } catch (InterruptedException e) {
        }
      }
    }
  }

  public void printOdd() {
    while (true) {
      if (count > MAX)
        break;
      synchronized (obj) {
        System.err.println(Thread.currentThread().getName() + " : " + count++);
        obj.notify();
        try {
          obj.wait();
        } catch (InterruptedException e) {
        }
      }
    }
  }
}


public class PrintEvenOddTester {
  public static void main(String[] args) {
    Print p = new Print();
    Thread t1 = new Thread(() -> p.printEven());
    t1.setName("EVEN");
    Thread t2 = new Thread(() -> p.printOdd());
    t2.setName("ODD");

    t1.start();
    t2.start();
  }
}

I wanted to check whether there is any better or efficient way to do these kind of tasks? I ran both the code and it works fine so wanted to check if everything looks good from thread safety and synchronization perspective.

Since in my above code, I am using while(true) loop which will take some CPU's so I am not sure whether this is the best way to do it?