1.编写并测试一个代表地址的Address类，地址信息由国家、省份、城市、街道、邮编组成，并可以返回完整的地址信息。
//=================================================
// File Name : Address_demo
//------------------------------------------------------------------------------
// Author : Common
// 内部类名：Address
// 属性：
// 方法：
class Address{
private String country; //定义国家
private String province; //定义省份
private String city; //定义城市
private String street; //定义街道
private String zipcode; //定义邮编
public Address(String country,String province,String city,String street,String zipcode){ //构造方法设置地址
this.country = country;
this.province = province;
this.city = city;
this.street = street;
this.zipcode = zipcode;
}
public String getCountry(){
return this.country;
}
public void setCountry(String country) {
this.country = country;
}
public String getProvince() {
return this.province;
}
public void setProvince(String province) {
this.province = province;
}
public String getCity() {
return this.city;
}
public void setCity(String city) {
this.city = city;
}
public String getStreet() {
return this.street;
}
public void setStreet(String street) {
this.street = street;
}
public String getZipcode() {
return this.zipcode;
}
public void setZipcode(String zipcode) {
this.zipcode = zipcode;
}
public void print(){ //1.定义全部输出方法
System.out.println("国家"+this.country+"
"+"省份"+this.province+"
"+"城市"+this.city+"
"+"街道"+this.street+"
"+"邮编"+this.zipcode);
}
}
//主类
//Function : Address
public class Address_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
Address add = new Address("中国","福建","涵江","中山路","351111");
add.print();
}
}
2.定义并测试一个代表员工的employee类。员工属性包括“编号”、“姓名”、“基本薪水”、“薪水增长额”，还包括计算薪水增长额及计算增长后的工资总额的操作方法
//=================================================
// File Name : Employee_demo
//------------------------------------------------------------------------------
// Author : Common
// 类名：Employee
// 属性：
// 方法：
class Employee{
private String id;
private String name;
private int basic_Salary;
private int growth_Salary;
public Employee(String id, String name, int basic_Salary, int growth_Salary) {
this.id = id;
this.name = name;
this.basic_Salary = basic_Salary;
this.growth_Salary = growth_Salary;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getBasic_Salary() {
return basic_Salary;
}
public void setBasic_Salary(int basic_Salary) {
this.basic_Salary = basic_Salary;
}
public int getGrowth_Salary() {
return growth_Salary;
}
public void setGrowth_Salary(int growth_Salary) {
this.growth_Salary = growth_Salary;
}
public void print(){
System.out.println("员工编号"+this.id+"
"+"员工姓名"+this.name+"
"+"基本工资"+this.basic_Salary+"
"+"奖金"+this.growth_Salary+"
"+"总额"+(this.basic_Salary+this.growth_Salary));
}
}
//主类
//Function : Employee
public class Employee_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
Employee emp = new Employee("1", "Jack", 10000, 5000);
emp.print();
}
}
编写程序，统计处字符串“want you to know one thing”中字母n和字母o的出现次数
//=================================================
// File Name : string_Count_demo
//------------------------------------------------------------------------------
// Author : Common
// 类名：string_Count
// 属性：
// 方法：
class string_Count{
private int num;
private char str[];
private char c;
public string_Count(String str,char c){
this.str = str.toCharArray();
this.c = c;
}
public void print(){
for(int i=0;i<this.str.length;i++){
if(str[i] == this.c){
this.num++;
}
}
System.out.println("有"+this.c+"的个数为："+this.num+"
");
this.num = 0; //对num清零
}
}
//主类
//Function : string_Count
public class string_Count_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
string_Count demo = new string_Count("want you to know one thing",'n');
demo.print();
string_Count demo_ = new string_Count("want you to know one thing",'o');
demo_.print();
}
}
设计一个表示用户的user类，类中的变量有用户名/口令和记录用户个数的变量，定义类的3个构造方法（无参、为用户名赋值、为用户名和口令赋值）、获取和设置口令的方法和返回类信息的方法
//=================================================
// File Name : User_demo
//------------------------------------------------------------------------------
// Author : Common
// 类名：user
// 属性：
// 方法：
class user{
private String name;
private String pwd;
private static int user_num; //声明成static的时候产生多个对象的时候，修改一个对象就行修改所有的对象
public user() { //构造方法无参
user_num++; //用静态方式访问
}
public user(String name) { //构造方法,为用户名赋值
this.name = name;
user_num++;
}
public user(String name, String pwd) { //构造方法,为用户名和口令赋值
this.name = name;
this.pwd = pwd;
user_num++;
}
public String getPwd() {
return this.pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public void print(){
System.out.println("用户名："+this.name+"
"+"密码："+this.pwd+"
"+"用户个数"+user_num);
}
}
//主类
//Function : user
public class User_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
user zhangsan = new user();
zhangsan.print();
user lisi = new user("李四");
lisi.print();
user wangwu = new user("王五","12345");
wangwu.print();
wangwu.setPwd("12345678");
System.out.println("password:"+wangwu.getPwd());
wangwu.print();
}
}
字符串操作
//=================================================
// File Name : String_operation_demo
//------------------------------------------------------------------------------
// Author : Common
public class String_operation_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
String str = "Java技术学习班 20070326";
System.out.println(str.substring(11));
String str1 = "MLDN JAVA";
String str2 = str1.replace("JAVA", "J2EE");
System.out.println(str2);
System.out.println(str.charAt(8));
System.out.println(str.replace("0", ""));
System.out.println(str.replace(" ", ""));
String str3 = "350101199302147777";
System.out.println("birthday:"+str3.substring(6, 14));
}
}
编写一个公司员工类
//=================================================
// File Name : Cooperation_employee_demo
//------------------------------------------------------------------------------
// Author : Common
// 类名：Cooperation_employee
// 属性：
// 方法：
class Cooperation_employee{
private String id;
private String name;
private int salary;
private String department;
public Cooperation_employee(){ //无参
}
public Cooperation_employee(String id){ //单参
this.id = id;
this.name = "无名氏";
this.salary = 0;
this.department = "未定";
}
public Cooperation_employee(String id,String name){ //双参
this.id = id;
this.name = name;
this.salary = 1000;
this.department = "后勤";
}
public Cooperation_employee(String id,String name,int salary,String department){ //4参
this.id = id;
this.name = name;
this.salary = salary;
this.department = department;
}
public void print(){
System.out.println("员工号"+this.id+"
"+"姓名"+this.name+"
"+"薪水"+this.salary+"
"+"部门"+this.department);
}
}
public class Cooperation_employee_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
Cooperation_employee no_1 = new Cooperation_employee();
no_1.print();
Cooperation_employee no_2 = new Cooperation_employee("001");
no_2.print();
Cooperation_employee no_3 = new Cooperation_employee("001","张三");
no_3.print();
Cooperation_employee no_4 = new Cooperation_employee("002","李四",1000,"开发");
no_4.print();
}
}
声明一个图书类、其数据成员位书名、编号（利用静态变量实现自动编号）、书价，并拥有静态数据成员册数、记录图书的总册数，在构造方法中利用此静态变量为对象的编号赋值，在主方法中定义对象数组，并求出总册数
//=================================================
// File Name : book_demo
//------------------------------------------------------------------------------
// Author : Common
// 类名：book
// 属性：
// 方法：
class book{
private String name;
private String id;
private double price;
private static int count;
public book(String name,double price){
count++;
this.name = name;
this.price = price;
this.id = "000"+count;
}
public void print(){
System.out.println("书名:"+this.name+"
"+"ID:"+this.id+"
"+"价格:"+this.price+"
"+"书的总数"+count);
}
}
public class book_demo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
book[] book_array = new book[10];
for(int i=0;i<book_array.length;i++){
book_array[i] = new book("JAVA编程思想",19.8);
}
book_array[1].print();
}
}