proxy.java

来自「JAVA编程百例书中各章节的所有例子的源代码,包括套接字编程」· Java 代码 · 共 17 行

package ch10.section03;

public class Proxy
    implements Subject {
  private RealSubject realSubject;
  public Proxy() {
  }

  public void request() {
    if (realSubject == null) { //这里有个单例
      realSubject = new RealSubject();
    }
    realSubject.request();
    System.out.println("哈哈，是我在处理！");
  }
}