继承-car

Posted 2020-07-11 鱼在我这里

编写一个Car类，具有final类型的属性品牌，具有功能drive；

定义其子类Aodi和Benchi，具有属性：价格、型号；具有功能：变速；

定义主类E，在其main方法中分别创建Aodi和Benchi的对象并测试对象的特

性。

package homework;

public class Car {

    private  final String pinpai="";
    
    
    public void drive()
    {
        
        System.out.println("正在行驶");
        
    }


    public String getPinpai() {
        return pinpai;
    }
    
    
    
    
    
}

package homework;

public class Aodi extends Car{

    
    
    private double jiage;
    private String xinghao;
    public double getJiage() {
        return jiage;
    }
    public void setJiage(double jiage) {
        this.jiage = jiage;
    }
    public String getXinghao() {
        return xinghao;
    }
    public void setXinghao(String xinghao) {
        this.xinghao = xinghao;
    }
    
    
    
    
}

package homework;

public class Benchi extends Car{

    private double speed;
    
    public double getSpeed() {
        return speed;
    }


    public void setSpeed(double speed) {
        this.speed = speed;
    }
    
    public void changeSpeed(double speed)
    {
        for(int i=1;i<=20;i++)
        {
            speed+=10;
            if(speed>=150)
            {
                System.out.println("当前速度为："+speed+"请减速慢行");
            }            
            
            
        }
    }


    
    
    
}

package homework;

public class E {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根

        Aodi ai=new Aodi();
        ai.setJiage(100000.0);
        ai.setXinghao("a6L");
        ai.drive();
        
        Benchi bc=new Benchi();
        bc.changeSpeed(20);
        
        
    }

}

 

运行结果：