Blowfish Cipher Security

package org.best.example;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.swing.JOptionPane;

/**
 * This program demonstrates how to encrypt/decrypt input
 * using the Blowfish Cipher with the Java Cryptograhpy.
 *
 */
public class BlowfishCipher {

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

    // create a key generator based upon the Blowfish cipher
    KeyGenerator keygenerator = KeyGenerator.getInstance("Blowfish");

    // create a key
    SecretKey secretkey = keygenerator.generateKey();

    // create a cipher based upon Blowfish
    Cipher cipher = Cipher.getInstance("Blowfish");

    // initialise cipher to with secret key
    cipher.init(Cipher.ENCRYPT_MODE, secretkey);

    // get the text to encrypt
    String inputText = JOptionPane.showInputDialog("Input your message: ");

    // encrypt message
    byte[] encrypted = cipher.doFinal(inputText.getBytes());

    // re-initialise the cipher to be in decrypt mode
    cipher.init(Cipher.DECRYPT_MODE, secretkey);

    // decrypt message
    byte[] decrypted = cipher.doFinal(encrypted);

    // and display the results
    JOptionPane.showMessageDialog(JOptionPane.getRootFrame(),
                                  "encrypted text: " + new String(encrypted) + "\n" +
                                  "decrypted text: " + new String(decrypted));

    // end example
    System.exit(0);
  }
}