java- how to generate a random hexadecimal value within specified range of values

Question

I have a scenario in a java web app, where a random hexadecimal value has to be generated. This value should be within a range of values specified by me. (The range of value

Answer 1

Random randomService = new Random();
StringBuilder sb = new StringBuilder();
while (sb.length() < RANDOM_HEX_LENGTH) {
    sb.append(Integer.toHexString(randomService.nextInt()));
}
sb.setLength(RANDOM_HEX_LENGTH);
System.out.println(sb.toString());