Write code to convert string to MD5 hash and format the result
//package com.book2s; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Main { public static void main(String[] argv) { String str = "book2s.com"; System.out.println(str2md5(str)); }// w w w .j a va 2s. c o m private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; public static String str2md5(String str) { try { MessageDigest algorithm = MessageDigest.getInstance("MD5"); algorithm.reset(); algorithm.update(str.getBytes()); byte[] bytes = algorithm.digest(); StringBuilder hexString = new StringBuilder(); for (byte b : bytes) { hexString.append(HEX_DIGITS[b >> 4 & 0xf]); hexString.append(HEX_DIGITS[b & 0xf]); } return hexString.toString(); } catch (NoSuchAlgorithmException e) { throw new RuntimeException(e); } } }