建立工具類，每隔5秒返回當前時間

package FiveTime;

import java.util.ArrayList;
import java.util.List;

import jinghai.base.notifier.Notifier;
import jinghai.base.time.LocalDateTime;

public class FivesTimer extends Thread{

    public List<Notifier<LocalDateTime>> timelist = new ArrayList<Notifier<LocalDateTime>>();
    
    
 
public void run() {
        try {
            doRun();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public void doRun() throws Exception {
        while(true) {
            doSleep();
            for(Notifier<LocalDateTime> n:timelist) {
                n.notify(LocalDateTime.now());
            }
        }
    }
    
 
public void doSleep() {
        try {
            sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

Receiver例項化工具類，每隔五秒輸出當前時間

package Receiver;

import FiveTime.FivesTimer;
import jinghai.base.notifier.Notifier;
import jinghai.base.time.LocalDateTime;

 
public class Receiver {

    public FivesTimer fivesTimer;
    
    public Receiver() {
        fivesTimer = new FivesTimer();
        fivesTimer.timelist.add(new Notifier<LocalDateTime>() {

            @Override
            public void notify(LocalDateTime time) {
                
                show(time);
            }
            
        });
    }
    public void show(LocalDateTime time) {
        System.out.println(time);
    }
    public void run() {
        fivesTimer.start();
    }
}

main函式

package Receiver;

public class Test {

    public static void main(String[] args) {
        Receiver receiver = new Receiver();
        receiver.run();
    }
}