How to convert a byte into Hexadecimal in Java

Question

I have an array of bytes and I want to convert it into corresponding hexadecimal values. Is there a function to perform this?

Answer 1

byte[] bytes = {-1, 0, 1, 2, 3 };
    StringBuilder sb = new StringBuilder();
    for (byte b : bytes) {
        sb.append(String.format("%02X ", b));
    }
    System.out.println(sb.toString());
    // prints "FF 00 01 02 03 "