### Question:
Hexer { public static String stringify(byte[] data) { StringBuilder sb = new StringBuilder(); for (byte b : data) { sb.append(String.format("0x%02x ", b & 0xff)); } sb.deleteCharAt(sb.length() - 1); return sb.toString(); }  static String hexify(byte[] data); static String stringify(byte[] data); static byte[] parse(final String stringOfSpaceSeparatedHex); static byte[] parse(final String[] hexValues); static byte[] dehexify(String data);  }### Answer:
@Test public void hexifyWithRadix() { assertEquals("Representation of a byte array in hex with radix and space delimited", sr, Hexer.stringify(b)); }