Java tutorial
//package com.java2s; public class Main { public static String getURL(String v) { int site = v.indexOf("http://"); if (site >= 0) { int end = v.length(); String chars = " \n\r\t"; for (int c = 0; c < chars.length(); c++) { int r = v.indexOf(chars.charAt(c), site); if (r >= 0 && r < end) { end = r; } } return v.substring(site, end); } return null; } }