定时打印

package com.briup.zuoye;


public class Timer {


public static void main(String[] args) {
ActionListenerImpl a = new ActionListenerImpl();
aa t = new aa(3, a);
t.start();
}
}


class aa extends Thread {
private int delay;
private ActionListener listener;


@Override
public void run() {
try {
while (true) {
for (int i = 1; i <= delay; i++) {
System.out.println(i);
Thread.sleep(1000);
}
listener.actioPerformed();
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}


public aa(int delay, ActionListener listener) {
this.delay = delay;
this.listener = listener;
}
}


interface ActionListener {
public void actioPerformed();
}


class ActionListenerImpl implements ActionListener {


@Override
public void actioPerformed() {
System.out.println("----hello----");


}


}