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编写一个Java应用程序，设计一个汽车类Vehicle
class Vehicle {
int wheels;
float weight;
protected Vehicle(int wheels, float weight){
this.wheels = wheels;
this.weight = weight;
}
public void print(){
System.out.println(“汽车共有“+wheels+“个轮子“);
System.out.println(“重量为“+weight+“吨“);
}
}
class Car extends Vehicle{
int loader;
public Car(int wheels, float weight, int load) {
super(wheels, weight);
loader = load;
}
@Override
public void print(){
System.out.println(“小车共有“+wheels+“个轮子“);
System.out.println(“重量为“+weight+“吨“);
System.out.println(“载人数为“+ loader+“人“);
}
}
class Truck extends Car{
float payload;
public Truck(int wheels, float weight, int loader, float payload) {
super(wheels, weight, loader);
this.loader= loader;
this.payload = payload;
}
@Override
public void print(){
System.out.println(“卡车：共有“+wheels+“个轮子“);
System.out.println(“重量为“+weight+“吨“);
System.out.println(“载人数为“+loader+“人“);
System.out.println(“载重量为“+payload+“吨“);
}
}
public class Text{
public static void main(String args){
Vehicle car = new Car(4, 3, 4);
Vehicle truck = new Truck(6, 6, 2, 10);
car.print();
truck.print();
}
}
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