设计模式.1.1单一职责

单一职责：尚硅谷

package com.zlt.principle.singleresponsibility;

public class SingleResponsibility2 {
    public static void main(String[] args) {
        RoadVehicle roadVehicle = new RoadVehicle();
        roadVehicle.run("摩托");
        roadVehicle.run("汽车");

        WaterVehicle waterVehicle = new WaterVehicle();
        waterVehicle.run("轮船");

        AirVehicle airVehicle = new AirVehicle();
        airVehicle.run("飞机");
    }
}
//

class  RoadVehicle{
    public  void  run(String vehicle){
        System.out.println(vehicle+"在公路上运行");
    }
}
class  WaterVehicle{
    public  void  run(String vehicle){
        System.out.println(vehicle+"在水上运行");
    }
}
class  AirVehicle{
    public  void  run(String vehicle){
        System.out.println(vehicle+"在空中运行");
    }
}

方法二：

package com.zlt.principle.singleresponsibility;

public class SingleResponsibility3 {
    public static void main(String[] args) {
        Vehicle2 vehicle2 = new Vehicle2();
        vehicle2.run("汽车");
        vehicle2.runAir("飞机");
        vehicle2.runWater("轮船");
    }
}

//方式3分分析
//1.这种修改方法没有对原来的类做大的修改，只是增加方法
//2.这里虽然没有在类这个级别上遵守单一职责原则,但是在方法级别上,仍然是遵守单一职责
class Vehicle2 {
    public void run(String vehicle) {
        System.out.println(vehicle + " 在公路上运行~~");
    }
    public  void runAir(String vehicle){
        System.out.println(vehicle+"在天上飞");
    }
    public  void runWater(String vehicle){
        System.out.println(vehicle+"在水里游");
    }
}