第二次作业

第一题：编写“人”及其测试类：

package person;

public class person {  

String name;    String sex;   String age;   String id;

 void get(String n,String s,String a,String i)

{   name=n;   sex=s;   age=a;   id=i;  }

 void show() {  

 System.out.println("姓名："+name);   System.out.println("性别："+sex);   System.out.println("年龄："+age);   System.out.println("身份证号码："+id);  }

public static void main(String[] args) {

 person zhang=new person();

 System.out.println("第一个人的信息");  zhang.name="张三";  zhang.sex="男";  zhang.age="18";  zhang.id="430101010101010101";

 System.out.println("姓名："+zhang.name);  System.out.println("性别："+zhang.sex);  System.out.println("年龄："+zhang.age);  System.out.println("身份证号码："+zhang.id);  person li=new person();  System.out.println("第二个人的信息");  li.get("李四", "女", "18", "123456789009876543");  li.show();   }     }

第二题：编写“手机”类及其测试类：

public class Phone {
 String brand;
 String model;
void get(String brand,String model)
{
 this.brand =brand;
 this.model =model;
}
void show() {
 System.out.println("品牌:"+brand);
 System.out.println("型号:"+model);
}
public static void main(String[] args) {
 Phone Huawei=new Phone();
 System.out.println("输出手机信息");
 Huawei.brand="华为";
 Huawei.model="荣耀3C";
 System.out.println("品牌:"+Huawei.brand);
 System.out.println("型号:"+Huawei.model);
 Phone Lianxiang=new Phone();
 System.out.println("输出手机信息");
 Lianxiang.brand="联想";
 Lianxiang.model ="A3600D";
 System.out.println("品牌："+Lianxiang.brand );
 System.out.println("型号："+Lianxiang.model );
 Phone Xiaomi=new Phone();
 System.out.println("输出手机信息");
 Xiaomi.brand="小米";
 Xiaomi.model ="note";
 System.out.println("品牌："+Xiaomi.brand );
 System.out.println("型号："+Xiaomi.model );
}
}

第三题：编写“书籍类”及其测试类：

public class Book {  String name;  String num;  String author;  String place;  String time;  int totalnum;  int price;

 void get(String name,String num,String author,String place,String time,int totalnum,int price) {

  this.name =name;   this.num =num;   this.author =author;   this.place =place;   this.time =time;   this.totalnum =totalnum;   this.price =price;  }

 public static void main(String[] args) {

  Book Yue=new Book();

  Yue.name="你是人间的四月天";   Yue.num ="ISBN 978-7-80733-655-6";   Yue.author ="林徽因";   Yue.place="古吴轩出版社";   Yue.time ="2011-6";   Yue.totalnum =200;   Yue.price =29;   System.out.println("书名:"+Yue.name);

  System.out.println( "书号:"+Yue.num);   System.out.println("作者:"+Yue.author);   System.out.println("出版社:"+Yue.place);   System.out.println("出版时间:"+Yue.time);   System.out.println("页数:"+Yue.totalnum);   System.out.println("价格:"+Yue.price);

  Book Xia=new Book();  

 Xia.name ="忽而今夏";   Xia.num="ISBN 9787505415157";   Xia.author="明前雨后";   Xia.place ="朝华出版社";   Xia.time ="2006-6";   Xia.totalnum =216;   Xia.price =20;   System.out.println("书名:"+Xia.name);   System.out.println( "书号:"+Xia.num);   System.out.println("作者:"+Xia.author);   System.out.println("出版社:"+Xia.place);   System.out.println("出版时间:"+Xia.time);   System.out.println("页数:"+Xia.totalnum);   System.out.println("价格:"+Xia.price);  }

}

第四题：编写“圆柱体类”及其测试类：

public class cylinder {  double r;  int h;  double s;  double V ;

 void get(double r,int h,double s,double V ) {

  this.r =r;   this.h =h;   this.s =s;   this.V =V;  }

 public static void main(String[] args) {

  double pai=3.14;   double r=2.0;   double s = pai*r*r;   int h=5;   double V=s*h;

 System.out.println("底面积:"+s);  System.out.println("体积:"+V);

 cylinder Circle=new cylinder();

  Circle.r =2.0;  Circle.h =5;  Circle.s =12.56;  Circle.V =62.800000000000004;

 System.out.println("底半径;"+r);  System.out.println("高;"+h);  System.out.println("底面积:"+s);  System.out.println("体积;"+V);   } }