Here you can find the source of toHexStringArray(byte[] bytes)
public static String[] toHexStringArray(byte[] bytes)
//package com.java2s; public class Main { public static String[] toHexStringArray(byte[] bytes) { String[] result = new String[bytes.length]; for (int i = 0; i < bytes.length; i++) { result[i] = toHexString(bytes[i]); }/*from w w w . ja va2s .c o m*/ return result; } public static String toHexString(byte[] bytes) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < bytes.length; i++) { sb.append(toHexString(bytes[i])); } return sb.toString(); } public static String toHexString(byte oneByte) { return String.format("%02x", oneByte); } }