从Twitter url获取Twitter用户名

/** 来自 时 代 J a v a - N o w J a v a . c o m**/


//package com.nowjava;


public class Main {

    public static void main(String[] argv) throws Exception {

        String url = "nowjava.com";

        System.out.println(twitterUsernameFromUrl(url));

    }


    /**

     * Get Twitter username from twitter url

     *

     * @param String url

     * @return String url

     */

    public static String twitterUsernameFromUrl(String url) {

        if (null == url) {

            return null;

        }

        String re =