输出出来不是我想要的结果

Question

为什么我的数字输出出来不是我想要的结果

public static void main(String[] args) {
num num = new num();
System.out.println(num.i);
Thread t1 = new Thread(new odd(num));
Thread t2 = new Thread(new even(num));
t1.setName("奇数");
t2.setName("偶数");
t1.start();
t2.start();
}
}

class num {
int i = 0;
}

class odd implements Runnable {
num num;
public odd(num num) {
this.num = num;
}

@Override
public void run() {
    while (true) {
        synchronized (num) {
            if (num.i%  2 == 0) {
                try {
                    num.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            } else {
                System.out.println(Thread.currentThread().getName() + "=" + num.i);
                num.i+=1;
                num.notifyAll();
            }
        }
    }
}

}

class even implements Runnable {
num num;

public even(num num) {
    this.num = num;
}

@Override
public void run() {
    while (true) {
        synchronized (num) {
            if (num.i % 2 != 0) {
                try {
                    num.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            } else {
                System.out.println(Thread.currentThread().getName() + "=" + num.i);
                num.i+=1;
                num.notifyAll();
            }
        }
    }
}

运行结果

=171823
偶数=171824
奇数=171825

我想要达到这样的结果

奇数=1
偶数=2这样的

Answer 1

System.out.println(Thread.currentThread().getName() + "=" + num.i);
这行代码修改一下，打印的值不对，改为：System.out.println(Thread.currentThread().getName() + "=" + (num.i % 2));