String.format("%02x", Integer.valueOf(new SecureRandom().nextInt(6) + 1))

This code generates a random integer between 1 and 6 (inclusive) using SecureRandom class and then formats it as a hexadecimal string with a leading "0x" using String.format() method. The resulting string will have a minimum length of 2 characters, with the first character being "0" and the second character being the hexadecimal digit representing the integer value. For example, if the random integer generated is 3, the resulting string will be "0x03".