实验 23：策略模式
实验 23：策略模式
本次实验属于模仿型实验，通过本次实验学生将掌握以下内容：
1、理解策略模式的动机，掌握该模式的结构；
2、能够利用策略模式解决实际问题。
[实验任务一]：旅行方式的选择
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。
实验要求：
1.提交源代码；
JAVA
package rjsj.no23;
public class BicycleStrategy implements TravelStrategy{
@Override
public void travel() {
System.out.println("骑自行车旅游");
}
}
package rjsj.no23;
public class Client {
public static void main(String[] args) {
Traveler traveler = new Traveler();
System.out.println("旅游开始！");
TravelStrategy travelStrategy = new TrainStrategy();
traveler.setTravelStrategy(travelStrategy);
traveler.travel();
System.out.println("**************************************************");
System.out.println("旅游开始！");
travelStrategy = new AirplaneStrategy();
traveler.setTravelStrategy(travelStrategy);
traveler.travel();
System.out.println("**************************************************");
System.out.println("旅游开始！");
travelStrategy = new BicycleStrategy();
traveler.setTravelStrategy(travelStrategy);
traveler.travel();
System.out.println("**************************************************");
}
}
package rjsj.no23;
public class TrainStrategy implements TravelStrategy{
@Override
public void travel() {
System.out.println("坐火车旅游");
}
}
package rjsj.no23;
public class Traveler {
private TravelStrategy travelStrategy;
public void setTravelStrategy(TravelStrategy travelStrategy) {
this.travelStrategy = travelStrategy;
}
public void travel(){
travelStrategy.travel();
}
}
package rjsj.no23;
public interface TravelStrategy {
void travel();
}
package rjsj.no23;
public class AirplaneStrategy implements TravelStrategy{
@Override
public void travel() {
System.out.println("乘坐飞机旅游");
}
}
C++
package rjsj.no23;
public class Client {
public static void main(String[] args) {
Traveler traveler = new Traveler();
System.out.println("旅游开始！");
TravelStrategy travelStrategy = new TrainStrategy();
traveler.setTravelStrategy(travelStrategy);
traveler.travel();
System.out.println("**************************************************");
System.out.println("旅游开始！");
travelStrategy = new AirplaneStrategy();
traveler.setTravelStrategy(travelStrategy);
traveler.travel();
System.out.println("**************************************************");
System.out.println("旅游开始！");
travelStrategy = new BicycleStrategy();
traveler.setTravelStrategy(travelStrategy);
traveler.travel();
System.out.println("**************************************************");
}
}
package rjsj.no23;
public class TrainStrategy implements TravelStrategy{
@Override
public void travel() {
System.out.println("坐火车旅游");
}
}
package rjsj.no23;
public class Traveler {
private TravelStrategy travelStrategy;
public void setTravelStrategy(TravelStrategy travelStrategy) {
this.travelStrategy = travelStrategy;
}
public void travel(){
travelStrategy.travel();
}
}
package rjsj.no23;
public interface TravelStrategy {
void travel();
}
package rjsj.no23;
public class AirplaneStrategy implements TravelStrategy{
@Override
public void travel() {
System.out.println("乘坐飞机旅游");
}
}
运行结果：
2.注意编程规范。
