public static String encryptDecrypt(String Password) {
      int Counter,Length;
      String rString = "";
      String Key="?AK47rpg40#>!";
      Length = 0;
      for (Counter = 0; Counter < (Password.length()); Counter++)
          {
          rString = rString + (char)((int)Password.charAt(Counter) ^ (int)Key.charAt(Length));
          Length++;
          if (Length > (Key.length()-1))
             Length=0;
          }
        return rString;
 }

public class SimpleCrypto
{
   static String transmogrify( String password, String data )
   {
      StringBuffer buffy = new StringBuffer();
 
      for( int i = 0; i < data.length(); i++ )
         buffy.append( (char)(password.charAt(i%password.length()) ^ data.charAt(i)) );
 
      return buffy.toString();
   }
   
   public static void main( String [] args )
   {
      simpleTest();
   }
 
   private static void simpleTest()
   {
      String password = "secret";
      String data = "This is a test of the emergency broad's caste system.";
 
      System.out.println( "Original data: " + data );
      
      String encrypted = transmogrify(password,data);
      System.out.println( "Encrypted data: " + encrypted );
      System.out.println( "Decrypted data: " + transmogrify(password,encrypted) );
   }
}