archiver.java

程序设计模式java入门源码大全

import java.util.*;

public class Archiver implements Observer 
{
  public Archiver() 
  {
  }
	
  public void update(String operation, String record)
  {
    System.out.println("The archiver says a " + operation +
      " operation was performed on " + record);
  }
}