Java tutorial
/* * 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. */ package FinalProject; /** * * @author Daanyaal */ import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.io.LineNumberReader; import java.util.Arrays; import java.util.Scanner; import org.apache.commons.io.FileUtils; public class Employee_Login extends javax.swing.JFrame { /** * Creates new form Employee_Login */ public Employee_Login() { initComponents(); setLocationRelativeTo(this); Error_Message.setVisible(false); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { jLabel1 = new javax.swing.JLabel(); Employee_Input = new javax.swing.JTextField(); jLabel2 = new javax.swing.JLabel(); Password_Input = new javax.swing.JPasswordField(); Back_Button = new javax.swing.JButton(); Submit_Button = new javax.swing.JButton(); Error_Message = new javax.swing.JLabel(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jLabel1.setFont(new java.awt.Font("KG Blank Space Solid", 0, 12)); // NOI18N jLabel1.setText("Employee ID:"); Employee_Input.addInputMethodListener(new java.awt.event.InputMethodListener() { public void caretPositionChanged(java.awt.event.InputMethodEvent evt) { } public void inputMethodTextChanged(java.awt.event.InputMethodEvent evt) { Employee_InputInputMethodTextChanged(evt); } }); Employee_Input.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { Employee_InputActionPerformed(evt); } }); jLabel2.setFont(new java.awt.Font("KG Blank Space Solid", 0, 12)); // NOI18N jLabel2.setText("Password:"); Password_Input.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { Password_InputActionPerformed(evt); } }); Back_Button.setFont(new java.awt.Font("KG Blank Space Solid", 0, 12)); // NOI18N Back_Button.setText("Back"); Back_Button.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { Back_ButtonActionPerformed(evt); } }); Submit_Button.setFont(new java.awt.Font("KG Blank Space Solid", 0, 12)); // NOI18N Submit_Button.setText("Submit"); Submit_Button.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { Submit_ButtonActionPerformed(evt); } }); Error_Message.setForeground(new java.awt.Color(255, 0, 51)); Error_Message.setText("Incorrect ID and/ or Password"); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(Back_Button) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(Submit_Button).addGap(35, 35, 35)) .addGroup(layout.createSequentialGroup().addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGap(24, 24, 24).addComponent(Error_Message)) .addGroup(layout.createSequentialGroup().addGap(36, 36, 36).addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(jLabel2).addComponent(jLabel1) .addComponent(Employee_Input, javax.swing.GroupLayout.DEFAULT_SIZE, 140, Short.MAX_VALUE) .addComponent(Password_Input, javax.swing.GroupLayout.DEFAULT_SIZE, 140, Short.MAX_VALUE)))) .addContainerGap(24, Short.MAX_VALUE))); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGap(24, 24, 24).addComponent(jLabel1).addGap(0, 0, 0) .addComponent(Employee_Input, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(18, 18, 18).addComponent(jLabel2).addGap(0, 0, 0) .addComponent(Password_Input, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(Error_Message, javax.swing.GroupLayout.PREFERRED_SIZE, 14, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(Back_Button).addComponent(Submit_Button)) .addGap(18, 18, 18))); pack(); }// </editor-fold>//GEN-END:initComponents private void Password_InputActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_Password_InputActionPerformed }//GEN-LAST:event_Password_InputActionPerformed private void Submit_ButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_Submit_ButtonActionPerformed String Password = Arrays.toString(Password_Input.getPassword()); String password = Password.replaceAll("\\[", "").replaceAll("\\]", "").replaceAll("\\, ", ""); String username = Employee_Input.getText(); try { File user = new File("Username.txt"); File pass = new File("Password.txt"); Scanner scanner = new Scanner(user); FileReader frU = new FileReader(user); LineNumberReader u = new LineNumberReader(frU); FileReader frP = new FileReader(pass); LineNumberReader p = new LineNumberReader(frP); int linenumberU = 0; while (scanner.hasNextLine() && u.readLine() != null) { linenumberU++; String lineFromFile = scanner.nextLine(); if (lineFromFile.contains(username)) // a match! { break; } } String pssLine = (String) FileUtils.readLines(pass).get(linenumberU - 1); String usrLine = (String) FileUtils.readLines(user).get(linenumberU - 1); if (username.equals(usrLine) && password.equals(pssLine)) { this.setVisible(false); Employee_Interface f = new Employee_Interface(); f.setVisible(true); f.ID_Number.setText(usrLine + "!"); } else { Error_Message.setVisible(true); } } catch (FileNotFoundException ex) { } catch (IOException ex) { } }//GEN-LAST:event_Submit_ButtonActionPerformed private void Employee_InputActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_Employee_InputActionPerformed }//GEN-LAST:event_Employee_InputActionPerformed private void Back_ButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_Back_ButtonActionPerformed this.setVisible(false); Home_Interface f = new Home_Interface(); f.setVisible(true); }//GEN-LAST:event_Back_ButtonActionPerformed private void Employee_InputInputMethodTextChanged(java.awt.event.InputMethodEvent evt) {//GEN-FIRST:event_Employee_InputInputMethodTextChanged }//GEN-LAST:event_Employee_InputInputMethodTextChanged /** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(Employee_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(Employee_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(Employee_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(Employee_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new Employee_Login().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton Back_Button; private javax.swing.JTextField Employee_Input; private javax.swing.JLabel Error_Message; private javax.swing.JPasswordField Password_Input; private javax.swing.JButton Submit_Button; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; // End of variables declaration//GEN-END:variables }