testobserver.java

来自「程序设计模式java入门源码大全」· Java 代码 · 共 16 行

public class TestObserver 
{
  public static void main(String args[])
  {
    Database database = new Database();
    Archiver archiver = new Archiver();
    Client client = new Client();
    Boss boss = new Boss();

    database.registerObserver(archiver);
    database.registerObserver(client);
    database.registerObserver(boss);
    database.editRecord("delete", "record 1");
  }
}