java第三次作业

package LHB.inherit;
import java.util.*;
class Monkey
{ String s;
public Monkey(String s)
{
this.s=s;
}
public void speak()
{
System.out.println("好嗨哟！");
}
}
class People extends Monkey
{
public People(String s) {
super(s);
}
public void speak()
{
System.out.println("刘海哥");
}
public void think()
{
System.out.println("王大姐");
}

}
public class E
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
String s;
s=in.next();
Monkey p=new Monkey(s);
People q=new People(s);
p.speak();
q.speak();
q.think();
}

}

import java.util.;
class Rectangle
{
int length,width;
public int area(int length,int width)/矩形面积/
{
this.length=length;
this.width=width;
int s;
s=lengthwidth;
return s;
}
}
class Cuboid extends Rectangle
{
int length,width,heigth;
public Cuboid(int length,int width,int heigth)
{
this.length=length;
this.width=width;
this.heigth=heigth;
}
public int area()/长方体底面积/
{
int s;
s=lengthwidth;
return s;
}
public int Volume()/长方体体积/
{
int v;
v=area()heigth;
return v;
}

}
public class Test
{

public static void main(String[] args) 
{
    int length,width,heigth;
    Scanner in=new Scanner(System.in);
    System.out.print("请输入长宽高：");
    length=in.nextInt();
    width=in.nextInt();
    heigth=in.nextInt();
    Rectangle p=new Rectangle();
    Cuboid q=new Cuboid(length,width,heigth);
    System.out.println("矩形的面积是："+p.area(length, width));
    System.out.println("长方体的体积是："+q.Volume());

}

}

import java.util.;
class Vehicle
{
int wheels,weight;/车轮个数，车重/
public Vehicle(int wheels,int weight)
{
this.wheels=wheels;
this.weight=weight;
}
public void print()
{
System.out.println("车轮个数是："+wheels+"个\n"+"车重是："+weight);
}
}
class Car extends Vehicle
{
int loader;/车载人数/
public Car(int wheels, int weight,int loader)
{
super(wheels, weight);
this.loader=loader;
}
public void print()
{
System.out.println("车载人数是："+loader);
}
}
class Truck extends Car
{
int payload;/载重量*/
public Truck(int wheels, int weight, int loader,int payload)
{
super(wheels, weight, loader);
this.payload=payload;
}
public void print()
{
System.out.println("载重量是："+payload);
}
}
public class Testcar
{

public static void main(String[] args)
{
    Scanner in=new Scanner(System.in);
    int wheels,weight,loader,payload;
    System.out.print("请输入车轮个数，车重，车载人数，载重量：");
    wheels=in.nextInt();
    weight=in.nextInt();
    loader=in.nextInt();
    payload=in.nextInt();
    Vehicle p1=new Vehicle(wheels,weight);
    Car p2=new Car(wheels,weight,loader);
    Truck p3=new Truck(wheels,weight,loader,payload);
       p1.print();
       p2.print();
       p3.print();
}

}