第三次作业

package TbT;

public class Monkey {
    public Monkey(){}
    private String s;
    public Monkey(String s){
        this.s=s;
    }
    public String gets(){
        return s;
    }
    public void speak()
    {
        System.out.println("咿咿呀呀.....");
    }
    public static void main(String[] args) 
     {
       Monkey m=new Monkey();
       People p=new People();
       m.speak();
       p.speak();
       p.think();
     }
    }
class People extends Monkey
{
    public void speak(){
        System.out.println("小样的，不错嘛！会说话了！");
    }
    public void think(){
        System.out.println("别说话！认真思考!");
    }
}

package TbT;

public class vehicle {
        private int wheels;
        private int weight;
    
    public int getwheels(){
        return wheels;
    }
    public int getweight(){
        return weight;
    }
    public vehicle(int wheels,int weight){
        this.weight=weight;
        this.wheels=wheels;
    }
    public void print(){
        System.out.println("车辆数据位：");
        System.out.println("车辆轮胎数为："+wheels+"车辆重量为"+weight);
    }
    public static void main(String[] args) {
        Car c = new Car(1,2,3);
        c.print();

    }
}
class Car extends vehicle
{
    private int loader;

    public Car(int wheels, int weight, int loader) 
    {
        super(wheels, weight);
        this.loader = loader;
    }
public int getLoader() 
    {
        return loader;
    }
    public void print()
    {
        System.out.println("Car的信息如下：");
        System.out.println("车轮数："+getwheels()
                +"    车重："+getweight()+"\n有载人数："+loader);
        System.out.println();
    }
}
class truck extends Car
{
    private int payload;
    public int getPayload()
    {
        return payload;
    }
    public truck(int wheels, int weight, int loader,int payload) 
    {
        super(wheels, weight, loader);
        this.payload = payload;
    }
}