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。
1 package FengZhuang; 2 import java.util.Scanner; 3 class Person 4 { 5 String name; 6 char sex; 7 int age; 8 String IdCard; 9 public void printf() 10 { 11 System.out.print("姓名是："+name+" "); 12 System.out.print("性别是："+sex+" "); 13 System.out.print("年龄是："+age+" "); 14 System.out.println("身份证号码是："+IdCard); 15 } 16 public Person(String name,char sex,int age,String IdCard) 17 { 18 this.name=name; 19 this.sex=sex; 20 this.age=age; 21 this.IdCard=IdCard; 22 23 } 24 } 25 public class TestPerson 26 { 27 public static void main(String[] args) 28 { 29 Scanner in= new Scanner(System.in); 30 String name; 31 char sex; 32 int age; 33 String IdCard; 34 System.out.println("请输入姓名，性别，年龄，身份证号码："); 35 name=in.next(); 36 sex=in.next().charAt(0); 37 age=in.nextInt(); 38 IdCard=in.next(); 39 Person object=new Person(name,sex,age,IdCard); 40 object.printf(); 41 } 42 }
2.编写“手机”类及其测试类。属性：手机品牌、手机型号。
1 package FengZhuang; 2 import java.util.Scanner; 3 class Phone 4 { 5 String Phonebrand; /*手机品牌*/ 6 String Phonemodel; /*手机型号*/ 7 public void printf() 8 { 9 System.out.print("该手机的品牌是："+Phonebrand+" "); 10 System.out.println("手机型号是："+Phonemodel); 11 } 12 13 public Phone(String Phonebrand,String Phonemodel) 14 { 15 this.Phonebrand=Phonebrand; 16 this.Phonemodel=Phonemodel; 17 } 18 } 19 public class TestPhone { 20 21 public static void main(String[] args) 22 { 23 Scanner in=new Scanner(System.in); 24 String Phonebrand,Phonemodel; 25 System.out.println("请输入手机品牌和型号："); 26 Phonebrand=in.next(); 27 Phonemodel=in.next(); 28 Phone object= new Phone(Phonebrand,Phonemodel); 29 object.printf(); 30 } 31 32 }
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。
1 package FengZhuang; 2 import java.util.Scanner; 3 class Book 4 { 5 String BookTitle, BookNumber;/*书名，书号*/ 6 String Compiler,Press; /*主编,出版社*/ 7 String PublishTime; /*出版时间*/ 8 int Page,Price; /*页数,价格*/ 9 void printf() 10 { 11 System.out.print("书名是:"+BookTitle+" "+"书号是:"+BookNumber+" "); 12 System.out.print("主编是:"+Compiler+" "+"出版社是:"+Press+" "); 13 System.out.print("出版时间是:"+PublishTime+" "); 14 System.out.println("页数是:"+Page+" "+"价格是:"+Price); 15 } 16 public Book(String BookTitle,String BookNumber,String Compiler,String Press,String PublishTime,int Page,int Price) 17 { 18 this.BookTitle=BookTitle; 19 this.BookNumber=BookNumber; 20 this.Compiler=Compiler; 21 this.Press=Press; 22 this.PublishTime=PublishTime; 23 this.Page=Page; 24 this.Price=Price; 25 } 26 } 27 public class TestBook { 28 29 public static void main(String[] args) 30 { 31 Scanner in=new Scanner(System.in); 32 String BookTitle,BookNumber; 33 String Compiler,Press; 34 String PublishTime; 35 int Page,Price; 36 System.out.println("请输入书名、书号、主编、出版社、出版时间、页数、价格"); 37 BookTitle=in.next(); 38 BookNumber=in.next(); 39 Compiler=in.next(); 40 Press=in.next(); 41 PublishTime=in.next(); 42 Page=in.nextInt(); 43 Price=in.nextInt(); 44 Book test1=new Book(BookTitle,BookNumber,Compiler,Press,PublishTime,Page,Price); 45 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); 46 test1.printf(); 47 test2.printf(); 48 } 49 50 }
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
1 package FengZhuang; 2 class Cylinder 3 { 4 double high,Radius;/*高，半径*/ 5 6 public Cylinder(double high,double Radius) 7 { 8 this.high=high; 9 this.Radius=Radius; 10 } 11 public double Bottomarea() /*底面积方法*/ 12 { 13 double s; 14 s=2*3.14*Radius*Radius; 15 return s; 16 } 17 public double volume()/*体积方法*/ 18 { 19 double v; 20 v=Bottomarea()*high; 21 return v; 22 } 23 public void print() 24 { 25 System.out.print("圆柱的半径是:"+Radius+" "+"高是:"+high+" "); 26 System.out.println("底面积是:"+Bottomarea()+" "+"体积是:"+volume()); 27 28 } 29 } 30 public class TestCylinder { 31 32 public static void main(String[] args) { 33 34 Cylinder test1=new Cylinder(6,6); 35 Cylinder test2=new Cylinder(9,9); 36 test1.print(); 37 test2.print(); 38 39 } 40 41 }
