Java tutorial
//package com.java2s; import android.support.v4.view.MotionEventCompat; public class Main { public static String byteToHexString(byte[] b) { StringBuffer hexString = new StringBuffer(); for (byte b2 : b) { String hex = Integer.toHexString(b2 & MotionEventCompat.ACTION_MASK); if (hex.length() == 1) { hex = '0' + hex; } hexString.append(hex.toLowerCase()); } return hexString.toString(); } }