ex11) java_thread

public class MyThread7 extends Thread {

MyThread7(ThreadGroup tg, String name) {

super(tg, name); // super!! + 반드시 첫줄에 기술 //(그룹명,스레드명)

// ->사실상 Thread(ThreadGroup group, String name)생성자 안에서 실행!

// ->트리형식으로 묶어줌

}

public void run() {

while (true) {

try {

sleep(500);

} catch (InterruptedException e) {}

System.out.println(getName() + ": is running");

}

class ThrGroup {

static public void main(String s[]) {

ThreadGroup MyGroup = new ThreadGroup("My Group");

MyThread7 thr_a = new MyThread7(MyGroup, "A"); //(그룹명,스레드명) -> 생성자 자동호출(위)

MyThread7 thr_b = new MyThread7(MyGroup, "B");

MyThread7 thr_c = new MyThread7(MyGroup, "C");

System.out.println("Starting the threads...");

thr_a.start();

thr_b.start();

thr_c.start();

try {

Thread.sleep(2000);

} catch (InterruptedException e) {}

System.out.println("Stopping the thread group...");

MyGroup.stop();

}

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