java--面向对象之继承2

快来打我* 2022-06-02 22:18 359阅读 0赞

Auto:  
package JC1;  
  
public class Auto \{  
private String wheel;  
private String color;  
private int weight;  
private double speed;  
public Auto(String wheel, String color, int weight, double speed) \{  
this.wheel = wheel;  
this.color = color;  
this.weight = weight;  
this.speed = speed;  
\}  
  
public void speedUp()\{  
this.speed+=10;  
System.out.println("白色的"+this.color+"，重量为"+this.weight+"kg"+",速度为"+this.speed+"km/h行驶！");  
\}  
public void speedDown()\{  
if(this.speed-10>0)\{  
this.speed-=10;  
System.out.println("白色的"+this.color+"，重量为"+this.weight+"kg"+",速度为"+this.speed+"km/h减速行驶！");  
\}  
\}  
public void stop()\{  
this.speed=0;  
System.out.println("车已停止！"+this.speed+"km/h");  
\}  
  
  
  
  
public String getWheel() \{  
return wheel;  
\}  
  
  
  
  
public String getColor() \{  
return color;  
\}  
  
  
  
  
public int getWeight() \{  
return weight;  
\}  
  
  
  
  
public double getSpeed() \{  
return speed;  
\}  
  
\}  
Car:  
package JC1;  
  
  
public class Car extends Auto \{  
private String aircondition;  
private String CD;  
public Car(String wheel, String color, int weight, double speed,  
String aircondition, String cD) \{  
super(wheel, color, weight, speed);  
this.aircondition = aircondition;  
CD = cD;  
\}  
//重写  
public void speedUp()\{  
System.out.println("白色的"+super.getColor()+"，重量为"+super.getWeight()+"kg"+",速度为"+super.getSpeed()+"km/h行驶！");  
\}  
public void speedDown()\{  
System.out.println("白色的"+super.getColor()+"，重量为"+super.getWeight()+"kg"+",速度为"+super.getSpeed()+"km/h减速行驶！");  
\}  
  
\}  
Test:  
package JC1;  
  
import org.junit.Test;  
  
public class jTest \{  
@Test  
public void test1()\{  
Auto auto=new Auto("4", "black", 50000, 40);  
Car car=new Car("4","white",52000,65, "美的", "eason");  
  
//System.out.println(auto.getSpeed());  
auto.speedUp();  
auto.speedUp();  
auto.speedUp();  
auto.speedDown();  
auto.speedDown();  
auto.speedDown();  
auto.speedDown();  
auto.speedDown();  
auto.speedDown();  
auto.speedDown();  
auto.stop();  
\}  
\}