package com.lipan.designpattern;

/*

 * @author:lipan

 * 

 * */

public interface BizInterface {

    public void doSomeBizWork();

}

package com.lipan.designpattern;

public class BizProxy implements BizInterface{

    private BizRealService obj;

    @Override

    public void doSomeBizWork() {

        if(obj == null){

            obj = new BizRealService();

        }

        System.out.println("do some non-biz work before real biz work");

        obj.doSomeBizWork();

        System.out.println("do some non-biz work after real biz work");

    }

}

package com.lipan.designpattern;

public class BizRealService implements BizInterface{

    @Override

    public void doSomeBizWork() {

        // TODO Auto-generated method stub

        System.out.println("Do some real work in Class BizRealService!");

    }

}

package com.lipan.test;

import com.lipan.designpattern.*;

public class TestProxy {

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        BizProxy bp = new BizProxy();

        bp.doSomeBizWork();

    }

}