Hi Friend,

Try the following code:

import java.security.*;
   import javax.crypto.*;
   import javax.crypto.spec.*;
   import java.io.*;

   public class EncryptAndDecrypt {
   public static String asHex (byte buf[]) {
   StringBuffer buffer = new StringBuffer(buf.length * 2);
      int i;
      for (i = 0; i < buf.length; i++) {
       if (((int) buf[i] & 0xff) < 0x10)
       buffer.append("0");
       buffer.append(Long.toString((int) buf[i] & 0xff, 16));
      }
      return buffer.toString();
     }
     public static void main(String[] args) throws Exception {
       String message="adfgvx";
       KeyGenerator kgen = KeyGenerator.getInstance("AES");
       kgen.init(128);       
       SecretKey skey = kgen.generateKey();
       byte[] raw = skey.getEncoded();
       SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
       Cipher cipher = Cipher.getInstance("AES");
       cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
       byte[] encrypted = cipher.doFinal(message.getBytes());
       System.out.println("encrypted string: " + asHex(encrypted));

       cipher.init(Cipher.DECRYPT_MODE, skeySpec);
       byte[] original =
       cipher.doFinal(encrypted);
       String decryptedString = new String(original);
       System.out.println("decrypted string: " +    decryptedString);
     }
   }

Thanks