Mega Code Archive
The program prints all hyperlinks links of an XHTML web page
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/*
This program is a part of the companion code for Core Java 8th ed.
(http://horstmann.com/corejava)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.io.InputStream;
import java.net.URL;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;
/**
* This program demonstrates how to use a SAX parser. The program prints all hyperlinks links of an
* XHTML web page. <br>
* Usage: java SAXTest url
* @version 1.00 2001-09-29
* @author Cay Horstmann
*/
public class SAXTest
{
public static void main(String[] args) throws Exception
{
String url;
if (args.length == 0)
{
url = "http://www.w3c.org";
System.out.println("Using " + url);
}
else url = args[0];
DefaultHandler handler = new DefaultHandler()
{
public void startElement(String namespaceURI, String lname, String qname,
Attributes attrs)
{
if (lname.equals("a") && attrs != null)
{
for (int i = 0; i < attrs.getLength(); i++)
{
String aname = attrs.getLocalName(i);
if (aname.equals("href")) System.out.println(attrs.getValue(i));
}
}
}
};
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
SAXParser saxParser = factory.newSAXParser();
InputStream in = new URL(url).openStream();
saxParser.parse(in, handler);
}
}
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