A management system for storing 100 employees ' information in an array

One: Requirements

The information stored includes: ID, name, phone number, address, marital status, birthday.

Function: The staff can make additions and deletions to check and change.

Ideas:

1) A class with the Main method

2) An employee's entity class employee;

3) A class dbcenter of adding and deleting and changing;

1) Code: Class with Main method

 PackageCom.niit.book;ImportJava.util.Scanner;ImportCom.niit.dbcenter.DBcenter;ImportCom.niit.entity.Employee;/** * @author: Annie * @date: May 15, 2016 * @description: Run the program, call and delete the change method*/ Public classEmployeemain { Public Static voidMain (string[] args) {Scanner in=NewScanner (system.in); System.out.println ("Please enter the number of employees to be deposited:"); intNumber =In.nextint (); Employee [] Employee=NewEmployee[number]; Dbcenter DB=NewDbcenter ();  while(true) {System.out.println ("Please enter the action to be taken"); System.out.println ("------Menu-------"); System.out.println ("1.add Data"); System.out.println ("2.Update Data"); System.out.println ("3.Display Data"); System.out.println ("4:delete Date"); System.out.println ("5.Exit"); System.out.println ("---------"); intnum =In.nextint (); Switch(num) { Case1: Db.adddate (employee);  Break;  Case2: Db.updatedate (employee);  Break;  Case3: Db.displaydate (employee);  Break;  Case4: Db.                Deletedate (employee);  Break;  Case5: System.exit (0);  Break; }        }    }}

2) Code: entity class

/** *  */ Packagecom.niit.entity;/** * @author: Annie * @date: May 15, 2016 * @description: basic information for Employees*/ Public classEmployee {Private intID; PrivateString name; PrivateString Tel; PrivateString addr; PrivateString birthday; PrivateString MaritalStatus;  Public intGetID () {returnID; }     Public voidSetID (intID) { This. ID =ID; }     PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     PublicString Gettel () {returnTel; }     Public voidSettel (String tel) { This. Tel =Tel; }     PublicString getaddr () {returnaddr; }     Public voidsetaddr (String addr) { This. addr =addr; }     PublicString Getbirthday () {returnbirthday; }     Public voidsetbirthday (String birthday) { This. Birthday =birthday; }     PublicString Getmaritalstatus () {returnMaritalStatus; }     Public voidsetmaritalstatus (String maritalstatus) { This. MaritalStatus =MaritalStatus; }         Publicstring toString () {string msg= This. id+ "\ T" + This. name+ "\ T" + This. tel+ "\t\t" + This. addr+ "\ T" + This. birthday+ "\ T" + This. MaritalStatus; returnmsg; }}

3) Code Dbcenter

/** *  */ PackageCom.niit.dbcenter;ImportJava.util.Scanner;ImportCom.niit.entity.Employee;/** * @author: Annie * @date: May 15, 2016 * @description: Change and delete Employees*/ Public classDbcenter {Scanner in=NewScanner (system.in); String msg= "number" + "\ T" + "name" + "\ T" + "phone number" + "\t\t" + "address" + "\ T" + "birthday" + "\ T" + "marital status"; /*Determine if there is an empty position in the array, if not, do not install, if there is, then install **/     Public intSetindext (Employee [] arr) { for(inti = 0; i < arr.length; i++) {            if(arr[i]==NULL){                returni; }        }        return999; }    /*for outputting student information, i.e. refreshing information*/     Public voidprint (Employee [] arr) {System.out.println (msg);  for(inti = 0; i < arr.length; i++) {            //determine if there is            if(arr[i]!=NULL) {System.out.println (arr[i]); }        }    }    /*used to determine if an employee exists*/     Public BooleanExsit (intId,employee arr) {        if(arr!=NULL) {            if(Arr.getid () = =ID) {                return true; }Else{                return false; }        }        return false; }    /*Increase Employee*/     Public voidadddate (employee[] arr) {System.out.println ("Please enter the employee's name:"); String name=In.next (); System.out.println ("Please enter the employee's phone number:"); String Tel=In.next (); System.out.println ("Please enter the employee's address:"); String Addr=In.next (); System.out.println ("Please enter the employee's birthday:"); String Birthday=In.next (); System.out.println ("Please enter the marital status of the employee"); String MaritalStatus=In.next (); Employee Employee=NewEmployee ();        Employee.setname (name);        Employee.setaddr (addr);        Employee.setbirthday (birthday);        Employee.settel (tel);        Employee.setmaritalstatus (MaritalStatus); inti = This. Setindext (arr);        Employee.setid (i); if(i==999) {System.out.println ("The number of people has reached the maximum and can no longer be added."); }Else{Arr[i]=employee;  This. Print (arr); }    }    /*Delete an employee*/     Public voiddeletedate (employee[] arr) {System.out.println ("Please enter the ID of the employee you want to delete:"); intID =In.nextint ();  for(inti = 0; i < arr.length; i++) {            if( This. Exsit (ID, arr[i])) {Arr[i]=NULL; System.out.println ("---Student information deleted successfully---");  This. Print (arr); return; }} System.out.println ("The student you have specified does not exist."); }    /*Query Employee: Find by ID*/     Public voiddisplaydate (employee[] arr) {System.out.println ("Please enter the number of the employee to be queried:"); intID =In.nextint ();  for(inti = 0; i < arr.length; i++) {            if( This. Exsit (ID, arr[i])) {                 This. Print (arr); return; }} System.out.println ("This student does not exist."); }    /*Modify Employee: Update by ID*/     Public voidupdatedate (Employee [] arr) {System.out.println ("Please enter the employee ID to be updated"); intID =In.nextint ();  for(inti = 0; i < arr.length; i++) {            if( This. Exsit (ID, arr[i])) {System.out.println ("Please enter" +arr[i].getname () + "Modified name:"); String name=In.next (); System.out.println ("Please enter" +arr[i].getname () + "modified phone number:"); String Tel=In.next (); System.out.println ("Please enter" +arr[i].getname () + "modified address:"); String Addr=In.next (); System.out.println ("Please enter" +arr[i].getname () + "Modified Birthday:"); String Birthday=In.next (); System.out.println ("Please enter" +arr[i].getname () + "Modified marital status"); String MaritalStatus=In.next ();                Arr[i].setname (name);                Arr[i].setaddr (addr);                Arr[i].setbirthday (birthday);                Arr[i].settel (tel);                Arr[i].setmaritalstatus (MaritalStatus); System.out.println ("----Update successfully----");  This. Print (arr); }        }    }}

Operation Result:

Increase the running result of employee information:

Update operation result: The rest runs on its own

A management system for storing 100 employees ' information in an array