设计模式之静态代理

接口

package org.zbq.proxy;

public interface Subject {
	public String say(String name, int age);
}

真实主题类

package org.zbq.proxy;

public class RealSubject implements Subject {
	
	@Override
	public String say(String name, int age) {
		return "My name is " + name + ", I am " + age +" old";
	}
}

代理主题类

package org.zbq.proxy;

public class ProxySubject implements Subject {
	private Subject sub = null;
	
	public ProxySubject(Subject sub){
		this.sub = sub;
	}
	
	@Override
	public String say(String name, int age) {
		return this.sub.say(name, age);
	}

}

测试类

package org.zbq.proxy;

public class ProxyTest {
	public static void main(String[] args) {
		Subject sub = new ProxySubject(new RealSubject());
		System.out.println(sub.say("ZhangSan", 21));
	}
}