Review

Method concatenates strings using + in a loop

• missing/call
• superfluous/call

sos/gui/HexField.java

setValue(byte[])

class HexField {
   /**
    * Sets the value of this hex field to <code>value</code>.
    *
    * @param value the new value.
    */
   public void setValue(byte[] value) {
      String result = "";
      for (int i=0; i < value.length; i++) {
         result += Hex.byteToHexString(value[i]);
      }
      textfield.setText(result);
   }

}