纯java代码在控制台运算电话本(不使用数据库)

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Task_08

 package cn.rzpt;

 import java.util.List;
 import java.util.Scanner;

 public class Task_08 {
     private static TelBook telBook = new TelBook();
     public static String init() {
         System.out.println("----------------------电话本管理系统----------------------");
         String operations[] = telBook.getOperations();
         for(int i = 0 ; i < operations.length;i++)
         {
             System.out.print(i+operations[i]+"\t");
         }
         System.out.println("\n----------------------电话本管理系统----------------------");
         System.out.print("请选择业务:");
         String input = new Scanner(System.in).nextLine();
         return input;
     }
     public static void main(String[] args) {
         String input = init();
         List<User> users = telBook.getUsers();
         //添加
         if(input.equals("1"))
         {
             System.out.println("\n----------------------添加电话本----------------------");
             System.out.print("姓名:");
             String name = new Scanner(System.in).nextLine();
             System.out.print("性别:");
             String gender = new Scanner(System.in).nextLine();
             System.out.print("年龄:");
             String age = new Scanner(System.in).nextLine();
             System.out.print("电话:");
             String tel = new Scanner(System.in).nextLine();
             System.out.print("QQ:");
             String QQ = new Scanner(System.in).nextLine();
             System.out.print("地址:");
             String address = new Scanner(System.in).nextLine();
             User user = new User(name,gender.equals("男"),Integer.parseInt(age),tel,QQ,address);
             users.add(user);
             System.out.println(user);
             System.out.println("添加成功");
             main(args);
         }

         if(input.equals("2"))
         {
             System.out.println("\n----------------------删除电话本----------------------");
             System.out.print("请输入删除的姓名:");
             String name = new Scanner(System.in).nextLine();
             if(users.indexOf(new User(name)) == -1)
             {
                 System.out.println("此人不存在");
             }
             else
             {
                 User user = users.get(users.indexOf(new User(name)));
                 System.out.println(user);
                 System.out.println("确定吗?1(是)0(否)");
                 String select = new Scanner(System.in).nextLine();
                 if(select.equals("1"))
                 {
                     users.remove(user);
                     System.out.println("删除成功");
                 }
                 if(select.equals("0"))
                 {
                     System.out.println("取消成功");
                 }
             }
             main(args);
         }

         if(input.equals("3"))
         {
             System.out.println("\n----------------------修改电话本----------------------");
             System.out.print("输入姓名");
             String name = new Scanner(System.in).nextLine();
             if(users.indexOf(new User(name)) == -1)
             {
                 System.out.println("此人不存在");
             }
             else
             {
                 User user = users.get(users.indexOf(new User(name)));
                 System.out.println(user);
                 System.out.println("请输入信息");
                 System.out.println("姓名:"+user.getName());
                 System.out.print("性别:");
                 String gender = new Scanner(System.in).nextLine();
                 System.out.print("年龄:");
                 String age = new Scanner(System.in).nextLine();
                 System.out.print("电话:");
                 String tel = new Scanner(System.in).nextLine();
                 System.out.print("QQ:");
                 String QQ = new Scanner(System.in).nextLine();
                 System.out.print("地址:");
                 String address = new Scanner(System.in).nextLine();
                 user = new User(name,gender.equals("男"),Integer.parseInt(age),tel,QQ,address);
                 users.add(user);
                 System.out.println(user);
                 System.out.println("修改成功");
             }
             main(args);
         }
         if(input.equals("4"))
         {
             System.out.println("\n----------------------打印所有电话本----------------------");
             for (User user : users) {
                 System.out.println(user);
             }
             main(args);
         }

         if(input.equals("5"))
         {
             System.out.println("\n----------------------查找电话本----------------------");
             System.out.print("输入姓名");
             String name = new Scanner(System.in).nextLine();
             if(users.indexOf(new User(name)) == -1)
             {
                 System.out.println("此人不存在");
             }
             else
             {
                 User user = users.get(users.indexOf(new User(name)));
                 System.out.println(user);
             }
             main(args);
         }
         if(input.equals("0"))
         {
             System.out.println("退出成功");
             System.exit(0);
         }
     }

 }

TelBook

 package cn.rzpt;

 import java.util.ArrayList;
 import java.util.List;

 public class TelBook {
     private final static String operations[] = {".退出",".添加",".删除",".修改",".查询所有",".根据姓名查询"};
     private List<User> users = new ArrayList<User>();
     public List<User> getUsers() {
         return users;
     }
     public void setUsers(List<User> users) {
         this.users = users;
     }
     public static String[] getOperations() {
         return operations;
     }

 }

User

 package cn.rzpt;

 public class User{
     private String name;
     private boolean gender;
     private int age;
     private String tel;
     private String QQ;
     private String address;
     public User(String name) {this.name = name;}
     public User(String name, boolean gender, int age, String tel, String qQ, String address) {
         super();
         this.name = name;
         this.gender = gender;
         this.age = age;
         this.tel = tel;
         QQ = qQ;
         this.address = address;
     }

     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public boolean isGender() {
         return gender;
     }
     public void setGender(boolean gender) {
         this.gender = gender;
     }
     public int getAge() {
         return age;
     }
     public void setAge(int age) {
         this.age = age;
     }
     public String getTel() {
         return tel;
     }
     public void setTel(String tel) {
         this.tel = tel;
     }
     public String getQQ() {
         return QQ;
     }
     public void setQQ(String qQ) {
         QQ = qQ;
     }
     public String getAddress() {
         return address;
     }
     public void setAddress(String address) {
         this.address = address;
     }
     @Override
     public String toString() {
         return "姓名:" + name + ", 性别:" + (gender?"男":"女") + ", 年龄:" + age + ", 电话:" + tel + ", QQ:" + QQ
                 + ", 地址:" + address;
     }

     @Override
     public int hashCode() {
         final int prime = 31;
         int result = 1;
         result = prime * result + ((name == null) ? 0 : name.hashCode());
         return result;
     }

     @Override
     public boolean equals(Object obj) {
         if (this == obj)
             return true;
         if (obj == null)
             return false;
         if (getClass() != obj.getClass())
             return false;
         User other = (User) obj;
         if (name == null) {
             if (other.name != null)
                 return false;
         } else if (!name.equals(other.name))
             return false;
         return true;
     }

 }