Java tutorial
//package com.java2s; import java.util.regex.Pattern; public class Main { private final static Pattern URL = Pattern.compile("^(https|http)://.*?$(net|com|.com.cn|org|me|)"); public static Boolean isUrl(String str) { if (str == null || str.trim().length() == 0) return false; return URL.matcher(str).matches(); } }