Here you can find the source of parseByte2HexStr(byte buf[])
public static String parseByte2HexStr(byte buf[])
//package com.java2s; public class Main { public static String parseByte2HexStr(byte buf[]) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < buf.length; i++) { String hex = Integer.toHexString(buf[i] & 0xFF); if (hex.length() == 1) { hex = '0' + hex; }/*from w w w . ja va2 s .co m*/ sb.append(hex.toUpperCase()); } return sb.toString(); } }