设计模式-策略模式的实现(java)

旅行方式的选择（java）

旅游的出行方式有乘坐飞机旅行、乘火车旅行和自行车游，不同的旅游方式有不同的实现过程，客户可以根据自己的需要选择一种合适的旅行方式。

config.xml 配置文件

<?xml version="1.0"?>

BicycleStrategy

Client.java 客户端代码

import java.util.Scanner;

interface TravelStrategy
{

public void travel();

class AirplaneStrategy implements TravelStrategy
{
public void travel()
{
System.out.println("飞机游真快，俯瞰大好河山！");
}
}

class TrainStrategy implements TravelStrategy
{
public void travel()
{
System.out.println("火车游，沿途的美景令我流连忘返！");
}
}

class BicycleStrategy implements TravelStrategy
{
public void travel()
{
System.out.println("自行车游，锻炼身体，真不错！");
}
}

class Person
{
private TravelStrategy ts;
public Person(TravelStrategy ts)
{
this.ts=ts;
}
public void travel()
{
ts.travel();
}
}

public class Client
{
public static void main(String args[])
{
Person mc;
System.out.println("你想选择的出行方式!");
System.out.println("1.飞机游");
System.out.println("2.火车游");
System.out.println("3.自行车游");
Scanner sc=new Scanner(System.in);
int a=sc.nextInt();
switch(a) {
case 1:
TravelStrategy at=new AirplaneStrategy();
mc=new Person(at);
mc.travel();
break;
case 2:
TravelStrategy TrainStrategy=new TrainStrategy();
mc=new Person(TrainStrategy);
mc.travel();
break;
case 3:
TravelStrategy BicycleStrategy=new BicycleStrategy();
mc=new Person( BicycleStrategy);
mc.travel();
}
//Person mc=new Person((TravelStrategy)XMLUtil.getBean());

}
}