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();
}
}
