Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static boolean isURL(String string) { String regExp = "^[\\w]*://([\\w-]+\\.)+[\\w-]+(/[\\w-./?%&=]*)?$"; Pattern pattern = Pattern.compile(regExp); Matcher matcher = pattern.matcher(string); return matcher.find();// boolean } }