编写一个Car类，具有String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 zuoye;

public class Cat {

String pinpai;
double sudu;
double jiage;
String xinghao;



public String getPinpai() {
return pinpai;
}



public void setPinpai(String pinpai) {
this.pinpai = pinpai;
}



public double getSudu() {
return sudu;
}



public void setSudu(double sudu) {
this.sudu = sudu;
}



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;
}



public String drive()
{
return "汽车已发动，请注意！";
}

}

package zuoye;

public class Aodi extends Cat {




public double biansu()
{
double sudu=super.getSudu()+20;
return sudu;

}

}

package zuoye;

public class Benchi extends Cat{

public double biansu1()
{
double sudu=super.getSudu()+40;
return sudu;
}


}

package zuoye;

public class E {

public static void main(String[] args) {
Aodi ad=new Aodi();

ad.setPinpai("奥迪 ");
ad.setXinghao("奥迪x7 ");
ad.setJiage(5000000.0);
System.out.println("汽车品牌是："+ad.getPinpai()+"型号是："+ad.getXinghao()+"价格是："+ad.getJiage());
System.out.println(ad.drive());
System.out.println("启动后速度是："+ad.biansu()+"km/h");

Benchi bc=new Benchi();

bc.setPinpai("奔驰 ");
bc.setXinghao("奔驰555 ");
bc.setJiage(10000000.0);
System.out.println("汽车品牌是："+bc.getPinpai()+"型号是："+bc.getXinghao()+"价格是："+bc.getJiage());
System.out.println(bc.drive());
System.out.println("启动后速度是："+bc.biansu1()+"km/h");
}

}

汽车.