Java模擬電話本操作

首先給出聯繫人的抽象類

package net.itaem.po;

/**
 *
 * 電話人的信息
 * */
public class User {

    private String name;
    private String phoneNumber;
    private String companyName;
    private String email;
    private String address;
    private String birthday;


    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPhoneNumber() {
        return phoneNumber;
    }
    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }
    public String getCompanyName() {
        return companyName;
    }
    public void setCompanyName(String companyName) {
        this.companyName = companyName;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public String getBirthday() {
        return birthday;
    }
    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
    @Override
    public String toString() {
        return "User [name=" + name + ", phoneNumber=" + phoneNumber
                + ", companyName=" + companyName + ", email=" + email
                + ", address=" + address + ", birthday=" + birthday + "]";
    }
    public User(String name, String phoneNumber, String companyName,
            String email, String address, String birthday) {
        this.name = name;
        this.phoneNumber = phoneNumber;
        this.companyName = companyName;
        this.email = email;
        this.address = address;
        this.birthday = birthday;
    }

    public User(String name, String phoneNumber){
        this.name = name;
        this.phoneNumber = phoneNumber;
    }

}

給出操作數據庫的UserDao，這裏只是簡單的模擬操作...所以使用打印來提示操作結果

下面給出工具類，用來獲得MVC中的VIEW的請求內容

package net.itaem.tool;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class GetInput {
    private static BufferedReader bufReader;

    static{
        bufReader = new BufferedReader(new InputStreamReader(System.in));
    }

    public static String getInputString(String info) throws IOException{
        System.out.println(info);
        String result = null;
        result = bufReader.readLine();   //讀取內存輸入的一行數據
        return result;
    }

    public static void main(String[] args) throws IOException{
    }
}

下面給出控制類，相當於MVC中的C，Controller，這個類負責和DAO，VIEW，TOOL等其它類交互...

package net.itaem.operate;

import java.io.IOException;

import net.itaem.dao.UserDao;
import net.itaem.po.User;
import net.itaem.tool.GetInput;

/**
 * 操作類
 * */
public class Operate {

    public Operate(){
        start();
    }

    public void start(){
        try {
            while(true){   //一直運行
                run();
            }
        } catch (IOException e) {
            e.printStackTrace();

        }
    }

    private void run() throws IOException{
        System.out.println("======================電話本===================");

        System.out.println("1查看所有聯繫人");
        System.out.println("2增加聯繫人");
        System.out.println("3刪除聯繫人");
        System.out.println("4搜索聯繫人");
        System.out.println("5退出");

        String choose = GetInput.getInputString("輸入你的選擇");
        char choice = choose.toCharArray()[0];
        switch(choice){
        case '1':
            System.out.println(UserDao.getInstance().findAll());  //輸出所有電話本用戶
            break;
        case '2':
            UserDao.getInstance().add(new User(GetInput.getInputString("輸入名字"),
                    GetInput.getInputString("輸入電話號碼")));
            break;
        case '3':
            UserDao.getInstance().delete(new User(GetInput.getInputString("輸入名字"),
                    GetInput.getInputString("輸入電話號碼")));
            break;
        case '4':
            System.out.println(UserDao.getInstance().findUsersByKeyword(GetInput.getInputString("輸入要查詢的關鍵字")));
            break;
        case '5':
            exit();
            break;
        default:
            System.out.println("sorry your input was wrong, please input 1、2、3、4");
        }
    }

    private void exit(){
        System.exit(0);  //退出
    }

    public static void main(String[] args) {
        new Operate().start();
    }
}

具體的程序運行結果大家可以自己測試下，或者讀讀代碼看看也應該可以明白...

下面是類圖：

總結：這個模擬並沒有什麼太大的難度，但是重點就是使用面向對象的思想去設計，然後各個類之間達到解耦。