DES output size bigger than input size

Question

If I try the code below for passwords and data of each 8 bytes, I get encrypted data of 16 bytes. Why is this so? I thought with DES the number of output bits equals the number of input bits.
Thanks,
J�rgen
static String A="DES";
private static byte[] encode(Key k, byte[] data) throws Exception
Cipher c = Cipher.getInstance(A);
c.init(Cipher.ENCRYPT_MODE, k);
byte[] enc = c.doFinal(data);
return enc;
byte[] passBytes = password.getBytes();
Key k = new SecretKeySpec(passBytes, A);
byte[] input = data.getBytes();
byte[] enc = encode(k,input);

Answer 1

see code below.
with "DES/CBC/NoPadding":
java.security.InvalidKeyException: Illegal key size or default parameters
with "DES/EBC/NoPadding"
java.security.NoSuchAlgorithmException: Cannot find any provider supporting DES/EBC/NoPadding
public class DESTest
     static String A=
//     "DES/EBC/NoPadding";
     "DES/CBC/NoPadding";
//     "DES";
     private static byte[] encode(Key k, byte[] data) throws Exception
          Cipher c = Cipher.getInstance(A);
          c.init(Cipher.ENCRYPT_MODE, k);
          byte[] enc = c.doFinal(data);
          return enc;
     private static byte[] decode(Key k, byte[] data) throws Exception
          Cipher c = Cipher.getInstance(A);
          c.init(Cipher.DECRYPT_MODE, k);
          byte[] enc = c.doFinal(data);
          return enc;
     public static void main(String[] args) throws Exception
          byte[] pass = "password".getBytes();
          byte[] data = "datadata".getBytes();
          Key k = new SecretKeySpec(pass, A);
          byte[] enc = encode(k,data);
          byte[] dec = decode(k,enc);
          String s = new String(dec);
          System.out.println(s);
}