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import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.Enumeration;
import javax.swing.text.AttributeSet;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLEditorKit;
public class MainClass {
public static void main(String[] args) {
ParserGetter kit = new ParserGetter();
HTMLEditorKit.Parser parser = kit.getParser();
HTMLEditorKit.ParserCallback callback = new ReportAttributes();
try {
URL u = new URL("http://www.java2java.com");
InputStream in = u.openStream();
InputStreamReader r = new InputStreamReader(in);
parser.parse(r, callback, false);
} catch (IOException e) {
System.err.println(e);
}
}
}
class ReportAttributes extends HTMLEditorKit.ParserCallback {
public void handleStartTag(HTML.Tag tag, MutableAttributeSet attributes, int position) {
this.listAttributes(attributes);
}
private void listAttributes(AttributeSet attributes) {
Enumeration e = attributes.getAttributeNames();
while (e.hasMoreElements()) {
Object name = e.nextElement();
Object value = attributes.getAttribute(name);
if (!attributes.containsAttribute(name.toString(), value)) {
System.out.println("containsAttribute() fails");
}
if (!attributes.isDefined(name.toString())) {
System.out.println("isDefined() fails");
}
System.out.println(name + "=" + value);
}
}
public void handleSimpleTag(HTML.Tag tag, MutableAttributeSet attributes, int position) {
this.listAttributes(attributes);
}
}
class ParserGetter extends HTMLEditorKit {
public HTMLEditorKit.Parser getParser() {
return super.getParser();
}
}
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