PersonClass.java

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Radu Ciuca
 */
public class PersonClass {

    //attributes which are required to specify person
    File loginFile = new File("login.txt");
    String username;
    String password;
    String usertype;
    String fullName;
    String gender;
    String phoneNo;
    String email;
    String DOB;

    public boolean LoggedIN = true;
    String setUtype;

    /*****************************************************************
       About: This functions which starts with set are for setting values for variables
        *****************************************************************/
    public void setPassword (String pword){
        password = pword;
    }

    public void setUsername (String uname){
        username = uname;
    }
    public void setUtype (String utype){
        usertype = utype;
    }
       /*****************************************************************
       About: This function is logging in user to a system and allocates
       relevant, in order to continue working.
        *****************************************************************/
    public boolean LogIn() throws FileNotFoundException, IOException
    {
         try {
            // TODO add your handling code here:
            Scanner sc = new Scanner(loginFile);
            String line = ""; //get data from line by line, then put it in variable line
            while(sc.hasNextLine())
            {
                line = sc.nextLine();
                String uname =line.substring(line.indexOf("username:")+ 10,
                        line.indexOf(", password"));
                String pword =line.substring(line.indexOf("password:")+ 10,
                        line.indexOf(", usertype:"));
                String utype = line.substring(line.indexOf("usertype: ")+ 10, line.indexOf(".;")).trim();
                //student, admin, tutor or parent?
                if(uname.equals(username) && pword.equals(password) && utype.equals(usertype))
                {
                    //login
                    if(utype.equals("admin"))
                    {
                        //jLabel3.setText("admin.");
                        AdminStaff.mainForm.setVisible(true);
                    }
                    else if(utype.equals("parent"))
                    {
                        //jLabel3.setText("parent.");
                        Parent.mainForm.setVisible(true);
                    }
                    else if (utype.equals("tutor"))
                    {
                        //jLabel3.setText("tutor.");
                        Tutor.mainForm.setVisible(true);
                    }
                    else if(utype.equals("student"))
                    {
                        //jLabel3.setText("student.");
                        Student.mainForm.setVisible(true);
                    }

                    //Person.mainForm.setVisible(true);
                    break;
                }
                else
                {

                    //don't login, show error
                }
            }

            //closing file
            sc.close();
         }
         catch (FileNotFoundException ex) {
            Logger.getLogger(PersonClass.class.getName()).log(Level.SEVERE, null, ex);
        }
         //returnign boolean value to get access in system
        return LoggedIN;
    }
}