public class PrintTest {

    private static int count = 0;
    private static final Object lock = new Object();

    public static void main(String[] args){

        System.out.println("start---");
        new Thread(new PrintEven(count,lock)).start();
        new Thread(new PrintOdd(count,lock)).start();
    }
}

/**
 * 打印基数线程
 */
class PrintOdd implements Runnable{

    int count;
    Object lock;

    public PrintOdd(int count,Object lock){
        this.lock = lock;
        this.count =count;
    }
    @Override
    public void run() {

            while (count<=100){
                synchronized (lock){
                    if ((count & 1) == 1){
                        System.out.println(Thread.currentThread().getName()+":"+count++);
                    }
                }

            }

    }
}

/**
 * 打印偶数线程
 */
class PrintEven implements Runnable{

    int count;
    Object lock;

    public PrintEven(int count,Object lock){
        this.lock = lock;
        this.count =count;
    }
    @Override
    public void run() {

            while (count<=100){
                synchronized (lock){
                    if ((count & 1) == 0){
                        System.out.println(Thread.currentThread().getName()+":"+ count++);
                    }
                }
            }

    }
}