[Java] Thread-01 sleep-join-yield

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public class TestThread1 {
    public static void main(String args[]) {
        Runner1 r = new Runner1();
        r.start();
        // r.run();
        // Thread t = new Thread(r);
        // t.start();

        for (int i = 0; i < 100; i++) {
            System.out.println("Main Thread:------" + i);
        }
    }
}

// class Runner1 implements Runnable {
class Runner1 extends Thread {
    public void run() {
        for (int i = 0; i < 100; i++) {
            System.out.println("Runner1 :" + i);
        }
    }
}
// 马老师心得 ： 能使用接口，就尽量使用接口，别从　Thread 继承，因为缺少灵活性。 

import java.util.*;

public class TestInterrupt {
    public static void main(String[] args) {
        MyThread thread = new MyThread();
        thread.start();
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
        }
        thread.interrupt();
    }
}

class MyThread extends Thread {
    boolean flag = true;

    public void run() {
        while (flag) {
            System.out.println("===" + new Date() + "===");
            try {
                sleep(1000);
            } catch (InterruptedException e) {
                return;
            }
        }
    }
}

public class TestJoin {
    public static void main(String[] args) {
        MyThread2 t1 = new MyThread2("abcde");
        t1.start();
        try {
            t1.join();
        } catch (InterruptedException e) {
        }


        for (int i = 1; i <= 10; i++) {
            System.out.println("i am main thread");
        }
    }
}


class MyThread2 extends Thread {
    MyThread2(String s) {
        super(s);
    }


    public void run() {
        for (int i = 1; i <= 10; i++) {
            System.out.println("i am " + getName());
            try {
                sleep(1000);
            } catch (InterruptedException e) {
                return;
            }
        }
    }
}

public class TestYield {
    public static void main(String[] args) {
        MyThread3 t1 = new MyThread3("t1");
        MyThread3 t2 = new MyThread3("t2");
        t1.start();
        t2.start();
    }
}


class MyThread3 extends Thread {
    MyThread3(String s) {
        super(s);
    }


    public void run() {
        for (int i = 1; i <= 100; i++) {
            System.out.println(getName() + ": " + i);
            if (i % 10 == 0) {
                yield();
            }
        }
    }
}