1.编写一个Java程序，并满足如下要求：编写一个Car类，具有：属性: 品牌(mark) - String类型功能: 驾驶 void drive()定义Car类的子类SubCar，具有：属性: 价格

package advance;abstract class Car {String mark;public Car(String mark) {this.mark = mark;}public void setMark(String mark) {this.mark = mark;}public String getMark() {return mark;}public void drive() {System.out.println("行驶");}public void speedChang(int newSpeed) {}}class SubCar extends Car {int price;int speed;public void setPrice(int price) {this.price = price;}public void setSpeed(int speed) {this.speed = speed;}public int getPrice() {return price;}public int getSpeed() {return speed;}public SubCar(String mark, int price, int speed) {super(mark);this.price = price;this.speed = speed;}@Overridepublic String toString() {return "SubCar{" +"mark='" + mark + '\'' +", price=" + price +", speed=" + speed +'}';}public void speedChang(int newSpeed){this.speed=newSpeed;}}public class Homework1 {public static void main(String[] args) {SubCar AoDi=new SubCar("AoDi",5000,120);SubCar Benz=new SubCar("Benz",6000,110);AoDi.speedChang(123);Benz.speedChang(145);System.out.println("AoDi变速的速度:"+AoDi.getSpeed());System.out.println("Benz变速的速度:"+Benz.getSpeed());System.out.println(AoDi.toString());System.out.println(Benz.toString());AoDi.drive();Benz.drive();}
}

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