Java ： T1,T2,T3三个线程顺序执行

T1,T2,T3三个线程顺序执行

问题：有三个线程t1.t2.t3，创建多线程，让它们按顺序执行 解决：使用join，在t3中调用t2，t2中调用t1

public static void main(String[] args){

        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("this is t1");
            }
        });

        Thread t2 = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    t1.join();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("this is t2");
            }
        });

        Thread t3 = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    t2.join();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("this is t3");
            }
        });

        t1.start();
        t2.start();
        t3.start();
    }