Java simulation and a phone book operation

Ha ha. People usually use the phone book. Here's a simple phone book that uses Java to simulate ...

First, give the abstract class of the contact.

Package net.itaem.po;/** * * Phone person's information * */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;} @Overridepublic String toString () {return "User [name=" + name + ", phonenumber=" + phonenumber+ ", companyname=" + compan YnamE + ", 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;}}

Gives the Userdao of the operational database. Here is just a simple analog operation ... So use Print to prompt for action results

The following is a tool class for obtaining the request content of view in MVC

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 ();   Reads a row of data from a memory input return result; public static void Main (string[] args) throws ioexception{}}

The following gives the control class, equivalent to the C,controller in MVC, which is responsible for interacting with other classes such as Dao,view,tool ...

Package Net.itaem.operate;import Java.io.ioexception;import Net.itaem.dao.userdao;import net.itaem.po.User;import net.itaem.tool.getinput;/** * Operation class * */public class Operate {public Operate () {Start ();} public void Start () {try {while (true) {//execute run ();}} catch (IOException e) {e.printstacktrace ()}} private void Run () throws Ioexception{system.out.println ("====================== telephone ==================="); System.out.println ("1 View all Contacts"); System.out.println ("2 Add Contacts"); System.out.println ("3 delete Contacts"); System.out.println ("4 Search Contacts"); System.out.println ("5 exit"); String Choose = Getinput.getinputstring ("Enter your selection"), char choice = Choose.tochararray () [0];switch (choice) {case ' 1 ':  System.out.println (Userdao.getinstance (). FINDALL ()); Output All phones This user break;case ' 2 ': userdao.getinstance (). Add (New User (getinput.getinputstring ("input name"), Getinput.getinputstring ("Input phone number")); Break;case ' 3 ': userdao.getinstance (). Delete (new User (getinput.getinputstring ("Input name"), getinput.getinputstring ("Input phone number")); Break;case ' 4 ': System.out.println(Userdao.getinstance (). Findusersbykeyword (getinput.getinputstring ("Input to query keyword")); Break;case ' 5 ': Exit (); BREAK;DEFAULT:SYSTEM.OUT.PRINTLN ("Sorry your input is wrong, please input 1, 2, 3, 4");}}  private void Exit () {system.exit (0); Exit}public static void Main (string[] args) {new Operate (). Start ();}}

Detailed program execution results you can test it yourself, or read the code to see if it should be clear ...

The following is a class diagram:

watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmdq2otawmw==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/center ">

Summary: This simulation is not much of a challenge. But the point is to use object-oriented thinking to design, and then decoupling between the various classes.

Java simulation and a phone book operation