thread ch01 ThreadTest3

package ch01;

class MyThread extends Thread{
	@Override
	public void run() {
		for (int i = 0; i < 20; i++) {
			System.out.println(i + " : " + Thread.currentThread());
			//현재 무슨 메서드가 작동중인지
		}
	}
}

public class ThreadTest3 {

	public static void main(String[] args) {
//		문제 1 쓰레드 3개 생성
		//쓰레드 start() 호출
		
		MyThread  thread1 = new MyThread();
		MyThread  thread2 = new MyThread();
		MyThread  thread3 = new MyThread();

		thread1.start();
		thread2.start();
		thread3.start();
	}

}