Java DES encryption

[scriptdiddy]

I'm trying to do a simple encryption/decryption program. The code below works fine if I never convert the encrypted text into a string. My problem occurs when i convert it to a string and then I convert it back into bytes. I want to eventually create a GUI, so I figured that if there is a encrypted text it will be assigned to a variable from a text field via a string. Please help if you can. Sorry for any confusion.

 
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
 
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
 
 
public class Main {
 
    public static void main(String[] args) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
        KeyGenerator keyGen = KeyGenerator.getInstance("DES");
        SecretKey myDesKey = keyGen.generateKey();
 
        Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, myDesKey);
        String message = "TEST";
        byte[] input = message.getBytes();
        System.out.println(input);
 
 
        // Encrypt
        byte[] messageEncrypted = cipher.doFinal(input);
 
        // Decrypt
        String text = messageEncrypted.toString();
        System.out.println(text);
        System.out.println(messageEncrypted);
        byte[] textMessageEncrypted;
        textMessageEncrypted = text.getBytes();
        System.out.println(textMessageEncrypted);
        cipher.init(Cipher.DECRYPT_MODE, myDesKey);
        byte[] messageDecrypted = cipher.doFinal(textMessageEncrypted);
        System.out.println("Text Decrypted: " + new String(messageDecrypted));
    }
 
}
 
 

Here is the error:

Exception in thread "main" javax.crypto.IllegalBlockSizeException: Input length must be multiple of 8 when decrypting with padded cipher
    at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
    at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
    at com.sun.crypto.provider.DESCipher.engineDoFinal(DashoA13*..)[B@4bdb699b