java 多线程奇数偶数输出

public class Test1 {
    public static void main(String[] args) {
        MyNumber number=new MyNumber();
        Thread1 thread1= new Thread1(number);
        Thread2 thread2 = new Thread2(number);
        Thread t1 = new Thread(thread1);
        Thread t2 = new Thread(thread2);
        t1.setName("奇数线程");
        t2.setName("偶数线程");
        t1.start();
        t2.start();

    }
}
class Thread1 implements Runnable{
    private MyNumber num;

    public Thread1(MyNumber num) {
        this.num = num;
    }

    @Override
    public void run() {
        while(true){
            synchronized (num){
               if(num.num%2==0){
                   try {
                       num.notifyAll();
                       num.wait();

                   } catch (InterruptedException e) {
                       e.printStackTrace();
                   }
                }
                System.out.println(Thread.currentThread().getName()+num.num++);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}
class Thread2 implements Runnable{
    private MyNumber num;

    public Thread2(MyNumber num) {
        this.num = num;
    }
    @Override
    public void run() {
        while(true){
            synchronized (num){

               if(num.num%2!=0){
                    try {
                        num.notifyAll();
                        num.wait();

                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                System.out.println(Thread.currentThread().getName()+num.num++);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            }
    }
}
class MyNumber{
    int num=1;
}