第二次java作业

 

1.编写“人”类及其测试类。属性：姓名、性别、年龄、身份证号码。

package FengZhuang;
import java.util.Scanner;
class Person 
{
     String name;
     char sex;
     int age;
     String IdCard;
    public void printf()
    {
        System.out.print("姓名是："+name+"   ");
        System.out.print("性别是："+sex+"   ");
        System.out.print("年龄是："+age+"   ");
        System.out.println("身份证号码是："+IdCard);
    }
    public Person(String name,char sex,int age,String IdCard)
    {
        this.name=name;
        this.sex=sex;
        this.age=age;
        this.IdCard=IdCard;
        
    }
}
   public class TestPerson
   {
      public static void main(String[] args) 
        {
            Scanner in= new Scanner(System.in);
          String name;
          char sex;
          int age;
          String IdCard; 
          System.out.println("请输入姓名，性别，年龄，身份证号码：");
          name=in.next();
          sex=in.next().charAt(0);
          age=in.nextInt();
          IdCard=in.next();
          Person object=new Person(name,sex,age,IdCard);
          object.printf();
        }
}

2.编写“手机”类及其测试类。属性：手机品牌、手机型号。

package FengZhuang;
import java.util.Scanner;
 class Phone
 {
     String Phonebrand;  /*手机品牌*/
     String Phonemodel;  /*手机型号*/
   public void printf()
   {
      System.out.print("该手机的品牌是："+Phonebrand+"  ");
      System.out.println("手机型号是："+Phonemodel);
   }
   
     public Phone(String Phonebrand,String Phonemodel) 
     {
         this.Phonebrand=Phonebrand;
         this.Phonemodel=Phonemodel;
     }
 }
public class TestPhone {

    public static void main(String[] args)
    {   
        Scanner in=new Scanner(System.in);
          String Phonebrand,Phonemodel;
          System.out.println("请输入手机品牌和型号：");
          Phonebrand=in.next();
          Phonemodel=in.next();
         Phone object= new Phone(Phonebrand,Phonemodel);
         object.printf();
    }

}

 

3.编写“书籍”类及其测试类。属性：书名、书号、主编、出版社、出版时间、页数、价格。

package FengZhuang;
import java.util.Scanner;
class Book
{
    String BookTitle, BookNumber;/*书名，书号*/
    String Compiler,Press;       /*主编,出版社*/
    String PublishTime;          /*出版时间*/
    int Page,Price;              /*页数,价格*/
    void printf()
    {
       System.out.print("书名是:"+BookTitle+"  "+"书号是:"+BookNumber+"  ");
       System.out.print("主编是:"+Compiler+"  "+"出版社是:"+Press+"   ");
       System.out.print("出版时间是:"+PublishTime+"  ");
       System.out.println("页数是:"+Page+"  "+"价格是:"+Price); 
    }
    public Book(String BookTitle,String BookNumber,String Compiler,String Press,String PublishTime,int Page,int Price)
    {
        this.BookTitle=BookTitle;
        this.BookNumber=BookNumber;
        this.Compiler=Compiler;
        this.Press=Press;
        this.PublishTime=PublishTime;
        this.Page=Page;
        this.Price=Price;
    }   
}
public class TestBook {

    public static void main(String[] args) 
    {
        Scanner in=new Scanner(System.in);
        String BookTitle,BookNumber;
        String Compiler,Press;
        String PublishTime;
        int Page,Price;
        System.out.println("请输入书名、书号、主编、出版社、出版时间、页数、价格");
        BookTitle=in.next();
        BookNumber=in.next();
        Compiler=in.next();
        Press=in.next();
        PublishTime=in.next();
        Page=in.nextInt();
        Price=in.nextInt();
        Book test1=new Book(BookTitle,BookNumber,Compiler,Press,PublishTime,Page,Price);
        Book test2=new Book("C语言从入门到放弃","1976654","谭浩强","清华大学出版社","2010年6月",390,33);
        test1.printf();
        test2.printf();
    }

}

4.编写“圆柱体”类及其测试类。属性：圆底半径、高。

方法1：计算底面积

方法2：计算体积

方法3：打印圆底半径、高、底面积和体积

package FengZhuang;
class Cylinder
{
    double high,Radius;/*高，半径*/
    
    public Cylinder(double high,double Radius)
    {
        this.high=high;
        this.Radius=Radius;
    }
    public double Bottomarea()  /*底面积方法*/
    {
        double s;
        s=2*3.14*Radius*Radius;
        return s;
    }
    public double  volume()/*体积方法*/
    {
          double v;
          v=Bottomarea()*high;
          return v;
    }
    public void print()
    {
        System.out.print("圆柱的半径是:"+Radius+"  "+"高是:"+high+"  ");
        System.out.println("底面积是:"+Bottomarea()+"  "+"体积是:"+volume());
    
    }
}
public class TestCylinder {

    public static void main(String[] args) {
        
        Cylinder test1=new Cylinder(6,6);
        Cylinder test2=new Cylinder(9,9);
        test1.print();
        test2.print();
        
    }

}