Joining.java

package com.brianway.learning.java.concurrent;

/**
 * Understanding join().
 *
 * 异常捕获时将清理标志位
 */
class Sleeper extends Thread {
    private int duration;

    public Sleeper(String name, int sleepTime) {
        super(name);
        duration = sleepTime;
        start();
    }

    public void run() {
        try {
            sleep(duration);
        } catch (InterruptedException e) {
            System.out.println(getName() + " was interrupted. " +
                    "isInterrupted(): " + isInterrupted());
            return;
        }
        System.out.println(getName() + " has awakened");
    }
}

class Joiner extends Thread {
    private Sleeper sleeper;

    public Joiner(String name, Sleeper sleeper) {
        super(name);
        this.sleeper = sleeper;
        start();
    }

    public void run() {
        try {
            sleeper.join();
        } catch (InterruptedException e) {
            System.out.println("Interrupted");
        }
        System.out.println(getName() + " join completed");
    }
}

public class Joining {
    public static void main(String[] args) {
        Sleeper
                sleepy = new Sleeper("Sleepy", 1500),
                grumpy = new Sleeper("Grumpy", 1500);
        Joiner
                dopey = new Joiner("Dopey", sleepy),
                doc = new Joiner("Doc", grumpy);
        grumpy.interrupt();
    }
}
/* Output:
Grumpy was interrupted. isInterrupted(): false
Doc join completed
Sleepy has awakened
Dopey join completed
*///:~