In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [duplicate]

Answer 1

I'm surprised that no one came up with the following solution:

StringWriter sw = new StringWriter();
com.sun.corba.se.impl.orbutil.HexOutputStream hex = new com.sun.corba.se.impl.orbutil.HexOutputStream(sw);
hex.write(byteArray);
System.out.println(sw.toString());