I cannot get this to run in net beans. It will not recognize class or anything and has issues with the userRoles part. Please help me here this final project is due today. I really need your help here.

 

 

package work;

import java.io.FileInputStream;

import java.security.MessageDigest;

import java.util.Scanner;

import javax.swing.JOptionPane;

public class AuthenticationSystem {

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

       Scanner scnr = new Scanner(System.in);

       FileInputStream admin = null; //file input streams

       FileInputStream zookeeper = null;

       FileInputStream veterinarian = null;

       //create array based on credentials.txt

       final int NUM_ELEMENTS = 6;

       String[] storedUsername = new String[NUM_ELEMENTS];

       String[] role = new String[NUM_ELEMENTS];

       String[] hashPassword = new String[NUM_ELEMENTS];

       String username = "";

       String password = "";

       String hash = "";

       userRoles userInput = new userRoles();

       String userRole = "";

       int i = 0; //loop variable

       int j = 0; //loop variable

       int user = 0;

       boolean verified = false;

       //populate username/password array

       storedUsername[i] = "griffin.keyes";      hashPassword[i] = "108de81c31bf9c622f76876b74e9285f"; ++i;

       storedUsername[i] = "rosario.dawson";      hashPassword[i] = "3e34baa4ee2ff767af8c120a496742b5"; ++i;

       storedUsername[i] = "bernie.gorilla";      hashPassword[i] = "a584efafa8f9ea7fe5cf18442f32b07b"; ++i;

       storedUsername[i] = "donald.monkey";      hashPassword[i] = "17b1b7d8a706696ed220bc414f729ad3"; ++i;

       storedUsername[i] = "jerome.grizzlybear";  hashPassword[i] = "3adea92111e6307f8f2aae4721e77900"; ++i;

       storedUsername[i] = "bruce.grizzlybear"; hashPassword[i] = "0d107d09f5bbe40cade3de5c71e9e9b7"; ++i;

       //display usage information for user

       JOptionPane.showMessageDialog(null, "All entries are case sensitive.n" +

               "Enter "quit" at any time to exit.", "Authentication System", JOptionPane.PLAIN_MESSAGE);

           //prompt user for credentials

           username = (String)JOptionPane.showInputDialog(null, "Enter username: ", "Authentication System", JOptionPane.PLAIN_MESSAGE);

               if (username.equals("quit")){

                   JOptionPane.showMessageDialog(null, "You have chosen to exit. Goodbye.", "Authentication System", JOptionPane.WARNING_MESSAGE);

                   return;

               }

           password = (String)JOptionPane.showInputDialog(null, "Enter password: ", "Authentication System", JOptionPane.PLAIN_MESSAGE);

               if (password.equals("quit")){

                   JOptionPane.showMessageDialog(null, "You have chosen to exit. Goodbye.", "Authentication System", JOptionPane.WARNING_MESSAGE);

                   return;

               }

           //check the validation of the user no more then 3 times.

           for (i = 0; i < 3; ++i){

               //compare user credentials to storedUsername and convert password

               for (j = 0; j < NUM_ELEMENTS; ++j) {       

                   if (username.equals(storedUsername[j])){

                       String original = password; //provided MD5Digest code

                       MessageDigest md = MessageDigest.getInstance("MD5");

                       md.update(original.getBytes());

                       byte[] digest = md.digest();

                       StringBuffer sb = new StringBuffer();

                       for (byte b : digest) {

                           sb.append(String.format("%02x", b & 0xff));

                       }

                       verified = true;

                       user = j;

                       hash = sb.toString();

                   }

               }

                       //if there are invalid credentials prompt for re-entry

                       if (!hash.equals(hashPassword[user])) {

                           verified = false;

                           if (i<2) {

                               JOptionPane.showMessageDialog(null, "Invalid user credentials. " + (2-i)

                                       + " attempt(s) remaining.", "Authentication System", JOptionPane.PLAIN_MESSAGE);

                               username = (String)JOptionPane.showInputDialog(null, "Enter username: ", "Authentication System",

                                       JOptionPane.PLAIN_MESSAGE);

                                   if (username.equals("quit")){

                                       JOptionPane.showMessageDialog(null, "You have chosen to exit. Goodbye.", "Authentication System",

                                               JOptionPane.WARNING_MESSAGE);

                                       break;

                                   }

                               password = (String)JOptionPane.showInputDialog(null, "Enter password: ", "Authentication System",

                                       JOptionPane.PLAIN_MESSAGE);

                                   if (password.equals("quit")){

                                       JOptionPane.showMessageDialog(null, "You have chosen to exit. Goodbye.", "Authentication System",

                                               JOptionPane.WARNING_MESSAGE);

                                       break;

                                   }

                           }

                           //give error message if incorrect password on final attempt

                           if((!verified) && (i==2)) {

                               JOptionPane.showMessageDialog(null, "Could not verify credentials. Goodbye.", "Authentication System",

                                       JOptionPane.ERROR_MESSAGE);

                               break;

                           }

                       }

                       //user credentials verified

                       else {

                           userInput.setUser(username); //set username

                           userRole = userInput.getRole(); //find corresponding role for user

                           userInput.printWelcome(); //display welcome message to user

                           return;

                       }

           }

    }

}