How to convert a byte array to a hex string in Java?

Question

I have a byte array filled with hex numbers and printing it the easy way is pretty pointless because there are many unprintable elements. What I need is the exact hexcode in

Answer 1

I usually use the following method for debuf statement, but i don't know if it is the best way of doing it or not

private static String digits = "0123456789abcdef";

public static String toHex(byte[] data){
    StringBuffer buf = new StringBuffer();
    for (int i = 0; i != data.length; i++)
    {
        int v = data[i] & 0xff;
        buf.append(digits.charAt(v >> 4));
        buf.append(digits.charAt(v & 0xf));
    }
    return buf.toString();
}