1 package LHB.inherit;
 2 import java.util.*;
 3 class Monkey
 4 {   String s;
 5     public  Monkey(String s)
 6     {
 7         this.s=s;
 8     }
 9     public void speak()
10     {
11         System.out.println("好嗨哟！");
12     }
13 }
14 class People extends Monkey
15 {
16    public People(String s) {
17         super(s);
18     }
19 public void speak()
20    {
21        System.out.println("感觉人生已经到达了巅峰");
22    }
23    public void think()
24    {
25        System.out.println("你好牛哦，你才是真正的大人物");
26    }
27
28 }
29 public class E
30 {
31     public static void main(String[] args)
32     {
33         Scanner in=new Scanner(System.in);
34         String s;
35         s=in.next();
36         Monkey p=new Monkey(s);
37         People q=new People(s);
38        p.speak();
39        q.speak();
40        q.think();
41     }
42
43 }

 1 package LHB.inherit;
 2 import java.util.*;
 3 class Rectangle
 4 {
 5     int length,width;
 6     public int area(int length,int width)/*矩形面积*/
 7     {
 8         this.length=length;
 9         this.width=width;
10         int s;
11         s=length*width;
12         return s;
13     }
14 }
15 class Cuboid extends Rectangle
16 {
17     int length,width,heigth;
18     public Cuboid(int length,int width,int heigth)
19     {
20         this.length=length;
21         this.width=width;
22         this.heigth=heigth;
23     }
24     public int area()/*长方体底面积*/
25     {
26         int s;
27         s=length*width;
28         return s;
29     }
30     public int Volume()/*长方体体积*/
31     {
32         int v;
33         v=area()*heigth;
34         return v;
35     }
36
37 }
38 public class Test
39 {
40
41     public static void main(String[] args)
42     {
43         int length,width,heigth;
44         Scanner in=new Scanner(System.in);
45         System.out.print("请输入长宽高：");
46         length=in.nextInt();
47         width=in.nextInt();
48         heigth=in.nextInt();
49         Rectangle p=new Rectangle();
50         Cuboid q=new Cuboid(length,width,heigth);
51         System.out.println("矩形的面积是："+p.area(length, width));
52         System.out.println("长方体的体积是："+q.Volume());
53
54     }
55
56 }

 1 package LHB.inherit;
 2 import java.util.*;
 3 class Vehicle
 4 {
 5     int wheels,weight;/*车轮个数，车重*/
 6     public Vehicle(int wheels,int weight)
 7     {
 8         this.wheels=wheels;
 9         this.weight=weight;
10     }
11     public void print()
12     {
13         System.out.println("车轮个数是："+wheels+"个\n"+"车重是："+weight);
14     }
15 }
16 class Car extends Vehicle
17 {
18       int loader;/*车载人数*/
19     public Car(int wheels, int weight,int loader)
20     {
21         super(wheels, weight);
22         this.loader=loader;
23     }
24     public void print()
25     {
26         System.out.println("车载人数是："+loader);
27     }
28 }
29 class Truck extends Car
30 {
31     int payload;/*载重量*/
32     public Truck(int wheels, int weight, int loader,int payload)
33     {
34         super(wheels, weight, loader);
35         this.payload=payload;
36     }
37     public void print()
38     {
39         System.out.println("载重量是："+payload);
40     }
41 }
42 public class Testcar
43 {
44
45     public static void main(String[] args)
46     {
47         Scanner in=new Scanner(System.in);
48         int wheels,weight,loader,payload;
49         System.out.print("请输入车轮个数，车重，车载人数，载重量：");
50         wheels=in.nextInt();
51         weight=in.nextInt();
52         loader=in.nextInt();
53         payload=in.nextInt();
54         Vehicle p1=new Vehicle(wheels,weight);
55         Car p2=new Car(wheels,weight,loader);
56         Truck p3=new Truck(wheels,weight,loader,payload);
57            p1.print();
58            p2.print();
59            p3.print();
60     }
61
62 }