MyEclipse自动生成的UML图，好像有一点丑。。。

实现的相同接口

package Dingdan;

public interface IOrder {
String GetproductName();

void SetproductName(String productName, String user);

int GetOrderNum();

void SetOrderNum(int OrderNum, String user);

String GetOrderUser();

void SetOrderUser(String Orderuser,String user);

}

真实订单

package Dingdan;

public class Order implements IOrder {
 private String Pname;
 private int Onum;
 private String Ouser;
 
public Order(String pname, int onum, String ouser) {

Pname = pname;
Onum = onum;
Ouser = ouser;
}

@Override
public String GetproductName() {
// TODO 自动生成的方法存根
return Pname;
}

@Override
public void SetproductName(String productName, String user) {
this.Pname=productName;

}

@Override
public int GetOrderNum() {
return Onum;
}

@Override
public void SetOrderNum(int OrderNum, String user) {
this.Onum=OrderNum;

}

@Override
public String GetOrderUser() {

return Ouser;
}

@Override
public void SetOrderUser(String Orderuser, String user) {
this.Ouser=Orderuser;

}

}

订单代理

package Dingdan;

public class ProxyOrder implements IOrder {
  private Order ord=null;
  
public ProxyOrder(Order ord) {

this.ord = ord;
}

public String GetproductName() {

return this.ord.GetproductName();
}

@Override
public void SetproductName(String productName, String user) {
if(user!=null&&user.equals(this.ord.GetOrderUser()))
ord.SetproductName(productName,user);
else
System.out.println("对不起您没有权限");

}

@Override
public int GetOrderNum() {
return this.ord.GetOrderNum();
}

@Override
public void SetOrderNum(int OrderNum, String user) {
   if(user!=null&&user.equals(this.ord.GetOrderUser()))
   ord.SetOrderNum(OrderNum,user);
   else
   System.out.println("对不起，您没有权限");
}

@Override
public String GetOrderUser() {
return this.ord.GetOrderUser();
}

@Override
public void SetOrderUser(String Orderuser, String user) {
if(user!=null&&user.equals(this.ord.GetOrderUser()))
ord.SetOrderUser(Orderuser,user);
else
System.out.println("对不起，您没有权限");
}

}

客户端

package Dingdan;

public class Test {
public static void main(String args[])

{Order o1=new Order("设计模式",100,"张三");
ProxyOrder po=new ProxyOrder(o1);
po.SetOrderNum(123,"李四");
po.SetOrderUser("王五", "李四");
System.out.println(po.GetOrderNum());
po.SetproductName("五年高考", "张三");
System.out.println(po.GetproductName());
po.SetOrderUser("李四", "张三");
po.SetOrderNum(150, "李四");
System.out.println(po.GetOrderNum());
}
}