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    <p>You can do this using a fullworthy HTML parser like <a href="http://jsoup.org/" rel="nofollow noreferrer">Jsoup</a>. There's a <a href="http://jsoup.org/apidocs/org/jsoup/nodes/Node.html#absUrl%28java.lang.String%29" rel="nofollow noreferrer"><code>Node#absUrl()</code></a> which does exactly what you want.</p> <pre><code>package com.stackoverflow.q3394298; import java.net.URL; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; public class Test { public static void main(String... args) throws Exception { URL url = new URL("https://stackoverflow.com/questions/3394298/"); Document document = Jsoup.connect(url).get(); Element link = document.select("a.question-hyperlink").first(); System.out.println(link.attr("href")); System.out.println(link.absUrl("href")); } } </code></pre> <p>which prints (correctly) the following for the title link of your current question:</p> <pre> /questions/3394298/full-link-extraction-using-java https://stackoverflow.com/questions/3394298/full-link-extraction-using-java </pre> <p>Jsoup may have more other (undiscovered) advantages for your purpose as well.</p> <h3>Related questions:</h3> <ul> <li><a href="https://stackoverflow.com/questions/3152138/what-are-the-pros-and-cons-of-the-leading-java-html-parsers">What are the pros and cons of the leading HTML parsers in Java?</a></li> </ul> <hr> <p><strong>Update</strong>: if you want to select <em>all</em> links in the document, then do as follows:</p> <pre><code> Elements links = document.select("a"); for (Element link : links) { System.out.println(link.attr("href")); System.out.println(link.absUrl("href")); } </code></pre>
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    1. COCan you gave me a full code, i am not that much master in JAVA,will you please help?
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    2. COOK, I edited it into a SSCCE flavor so that you can copy'n'paste'n'run it without changes (you just need to drop Jsoup JAR file in classpath).
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    3. COits shows an error "Exception in thread "main" java.lang.NullPointerException at Test.main<Test.java:13>" I gave site http://www.yahoo.com and shows the above error
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