concreteobserver.java

来自「《JAVA与模式》附书中源代码」· Java 代码 · 共 13 行

package com.javapatterns.observer;

import java.util.Observable;
import java.util.Observer;

public class ConcreteObserver implements Observer
{
    public void update(Observable o, Object arg)
    {
        // Write your code here
    }
}