编程语言
首页 > 编程语言> > Java第三次作业

Java第三次作业

作者：互联网

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();
    }

}

 

 
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();
    }

}
复制代码

 

 

2.按要求编写一个Java应用程序：
（1）定义一个类，描述一个矩形，包含有长、宽两种属性，和计算面积方法。
（2）编写一个类，继承自矩形类，同时该类描述长方体，具有长、宽、高属性，和计算体积的方法。

复制代码 
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=length*width;
        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=length*width;
        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());

    }

}
复制代码

3.编写一个Java应用程序，设计一个汽车类Vehicle，包含的属性有车轮个数wheels和车重weight。小车类Car是Vehicle的子类，其中包含的属性有载人数loader。卡车类Truck是Car类的子类，其中包含的属性有载重量payload。每个类都有构造方法和输出相关数据的方法。最后，写一个测试类来测试这些类的功能

复制代码 
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();
    }

}
复制代码

 2.按要求编写一个Java应用程序：
（1）定义一个类，描述一个矩形，包含有长、宽两种属性，和计算面积方法。
（2）编写一个类，继承自矩形类，同时该类描述长方体，具有长、宽、高属性，和计算体积的方法。

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=length*width;
        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=length*width;
        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());

    }

}

3.编写一个Java应用程序，设计一个汽车类Vehicle，包含的属性有车轮个数wheels和车重weight。小车类Car是Vehicle的子类，其中包含的属性有载人数loader。卡车类Truck是Car类的子类，其中包含的属性有载重量payload。每个类都有构造方法和输出相关数据的方法。最后，写一个测试类来测试这些类的功能

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();
    }

}

 

标签：Java,第三次,weight,int,作业,width,length,wheels,public
来源： https://www.cnblogs.com/durjc/p/10884215.html