tester.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 21 行

package com.javapatterns.observer.watching;

import java.util.Observer;

public class Tester
{
    private static Watched watched;
    private static Observer watcher;

    public static void main(String[] args)
    {
        watched = new Watched();
        watcher = new Watcher(watched);

        watched.changeData("In C, we create bugs.");
        watched.changeData("In Java, we inherit bugs.");
        watched.changeData("In Java, we inherit bugs.");
        watched.changeData("In Visual Basic, we visualize bugs.");
    }
}