如下所示：
package cn.sunzn.md5;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;public class Str2MD5 { public static void main(String[] args) { MD5("sunzn"); } private static String MD5(String sourceStr) { String result = ""; try { MessageDigest md = MessageDigest.getInstance("MD5"); md.update(sourceStr.getBytes()); byte b[] = md.digest(); int i; StringBuffer buf = new StringBuffer(""); for (int offset = 0; offset < b.length; offset++) { i = b[offset]; if (i < 0) i += 256; if (i < 16) buf.append("0"); buf.append(Integer.toHexString(i)); } result = buf.toString(); System.out.println("MD5(" + sourceStr + ",32) = " + result); System.out.println("MD5(" + sourceStr + ",16) = " + buf.toString().substring(8, 24)); } catch (NoSuchAlgorithmException e) { System.out.println(e); } return result; }}MD5(sunzn,32) = 40379db889f9124819228947faaeb1f7MD5(sunzn,16) = 89f9124819228947
以上就是小编为大家带来的java编程下字符串的16位,32位md5加密实现方法的全部内容了，希望对大家有所帮助，多多支持武林网~