Write code to convert byte array to to Hex String in Upper Case
//package com.book2s; public class Main { public static void main(String[] argv) { byte[] b = new byte[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 }; System.out.println(toHexStringUpperCase(b)); }/* w w w. j av a 2s . c o m*/ private static final char[] hexCharsUpperCase = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; public static String toHexStringUpperCase(byte[] b) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < b.length; i++) { sb.append(hexCharsUpperCase[(int) (((int) b[i] >> 4) & 0x0f)]); sb.append(hexCharsUpperCase[(int) (((int) b[i]) & 0x0f)]); } return sb.toString(); } }