Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static final String MATCHES_HTTP_URL = "(http://|https://).*?"; public static boolean isHttpUrl(String input) { return matching(MATCHES_HTTP_URL, input); } public static boolean matching(String regex, String input) { Pattern pattern = Pattern.compile(regex); Matcher matcher = pattern.matcher(input); return matcher.matches(); } }