Mohammed Samour

Hi!
Please help me ...
How to modify the contents of a file in Java.......

Execution sentence
import java.util.Scanner; public class Final_Project_Programming_2 {      /**     * @param args the command line arguments     */    public static void main(String[] args) throws Exception {                Admin asd1 =new Admin();        asd1.addmanager(); } }

That is grateful to you for you will help me:
See the code for how to add a managerimport java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Scanner; public class Admin {    private int id;    private String name;    Scanner in = new Scanner(System.in);    public void addmanager() {        for (int i = 0; i < 2; i++) {            List<List> myArray = new ArrayList<List>();            int x = 1;            while (x != 3) {                System.out.println("Choose ");                System.out.println("1-New account");                System.out.println("2-Make sure the manager is there");                x = in.nextInt();                switch (x) {                    case 1:                        System.out.println("1-New account");                        System.out.println("Enter  ID");                        id = in.nextInt();                        System.out.println(" Enter name");                        name = in.next();                        myArray.add(Arrays.asList(id, name));                        System.out.println(Arrays.asList(id, name));                        break;                    case 2:                        System.out.println("Make sure the manager is there");                        System.out.println("id ");                        int asd = in.nextInt();                        if (asd == id) {                            System.out.println("Saved successfully");                        } else {                            System.out.println("Not saved");                        }                }            }        }    } }
Let's say you entered ID: 12018 and name: mark
Then enter number 1 again and set up a new account
For example, ID: 12019 and name: Jack
Then you enter the number 2 and choose Make sure the manager is there.
You entered ID: 12018
The problem here is why the program did not print a saved message successfully
How to solve this problem and thank you for helping me

I do not ask to write the program completely but I want to store the variables in the list of an array and these variables to more than a user using the oop in Java and apologized to you for the non-tactful way to ask the last question Please forgive me and you all the respect and respect

Please help me build this program .....
Suppose a company has an administrator, managers and employees
The administrator has the authority to add the managers, provided that the following information is taken - Name ... Number ... Mobile number ... Email ... Status (active .. inactive) ... This is for the manager
Second Manager ... has the authority to add employees provided that the information for each employee ... Name ... Number ... Status ... Salary ... Email.
Final Note ... I hope you will have the program accept the registration of a large number of staff and managers
It is desirable to have the OOP programming model in Java
I will be grateful to your very much