D.Tech Academic: HomePage in java swing using encryption and decryption

HomePage.java

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;

public class HomePage {

public HomePage() {
  try {
   LookAndFeelInfo lf[]=UIManager.getInstalledLookAndFeels();
   UIManager.setLookAndFeel(lf[1].getClassName());
  }catch (Exception e) {
   // TODO: handle exception
  }
         initComponents();
 }
 
 private void initComponents() {
  JFrame f=new JFrame("Title");
  f.setIconImage(Toolkit.getDefaultToolkit().getImage("C:\\Users\\DEEP\\Desktop\\rr.jpg"));
  f.setSize(500,500);
  f.setLocationRelativeTo(null);
  f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
  JMenuBar mb=new JMenuBar();
  
  JMenu m1=new JMenu("File");
  JMenuItem mi1=new JMenuItem("New");
  JMenuItem mi2=new JMenuItem("Open");
  JMenuItem mi3=new JMenuItem("Save");
  JMenuItem mi4=new JMenuItem("Exit");
  m1.add(mi1);
  m1.add(mi2);
  m1.add(mi3);
  m1.add(mi4);
  
  JMenu m2=new JMenu("View");
  JMenu m3=new JMenu("Format");
  JMenu m4=new JMenu("Edit");
  JMenu m5=new JMenu("Help");
  
  JDesktopPane dp=new JDesktopPane();
  //dp.setBackground(Color.red);
  
  mb.add(m1);
  mb.add(m2);
  mb.add(m3);
  mb.add(m4);
  mb.add(m5);
  
  
  f.add(dp);
  f.add(BorderLayout.NORTH,mb);
  
  
  f.setVisible(true);
  mi1.addActionListener(new ActionListener() {
   @Override
   public void actionPerformed(ActionEvent e) {
   NewTask nt=new NewTask();
   dp.add(nt);
   nt.setVisible(true);
   }
  });
  
  mi2.addActionListener(new ActionListener() {
   @Override
   public void actionPerformed(ActionEvent e) {
   OpenTask nt=new OpenTask();
   dp.add(nt);
   nt.setVisible(true);
   }
  });
  
 }

public static void main(String[] args) {
 new HomePage();
}
}

NewTask.java

OpenTask.java

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.security.Key;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import javax.swing.JButton;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;

public class OpenTask extends JInternalFrame{
 private String key = "Bar12345Bar12345";
 Key k;
 private Cipher c;
 public OpenTask() {
  initComponents();
 }

private void initComponents(){
  setTitle("Open File");
  setSize(350,300);
  setClosable(true);
  setLayout(null);
  setIconifiable(true);
  
  JLabel l1=new JLabel("Enter Text");
  l1.setBounds(20,30,100,30);
  JTextField t1=new JTextField();
  t1.setBounds(130,30,100,30);
  JButton b1=new JButton("enc");
  b1.setBounds(240,30,70,30);
  JLabel l2=new JLabel("Result ");
  l2.setBounds(20,100,150,30);
  JTextField t2=new JTextField();
  t2.setBounds(130,200,100,30);
  JButton b2=new JButton("dec");
  b2.setBounds(240,200,70,30);
  
  add(l1);
  add(t1); 
  add(b1);
  add(l2);
  add(t2);
  add(b2);
  
  
  b1.addActionListener(new ActionListener() {
   @Override
   public void actionPerformed(ActionEvent e) {
   String enctext=t1.getText();
   try {
    k = new SecretKeySpec(key.getBytes(), "AES");
     c = Cipher.getInstance("AES");
     c.init(Cipher.ENCRYPT_MODE, k);
     byte b[] = c.doFinal(enctext.getBytes());
     String mycontext=new String(b);
     l2.setText(mycontext);
   }catch (Exception e1) {
    System.out.println(e1);
   }
   }
  });
  
  b2.addActionListener(new ActionListener() {
   @Override
   public void actionPerformed(ActionEvent e) {
   String text=l2.getText();
   try{
    c.init(Cipher.DECRYPT_MODE,k);
    byte b1[]=c.doFinal(text.getBytes());
    t2.setText(new String(b1));
    }catch (Exception e1) {
     System.out.println(e1);
    }
   }
  });
 }
 
}

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HomePage in java swing using encryption and decryption

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