This page demonstrates the use of the showDocument method. No frills, just code.

Here's the applet:

And here's the code:
(Get it in a separate file here)

import java.awt.Button;
import java.awt.Event;
import java.net.*;

public class SDTest extends java.applet.Applet {

    URL testurl;
    URL testurl2;
    Button urlbutton;
    Button urlbutton2;
    Button urlbutton3;

    public void init() {
        resize(100, 200);
        try {
            testurl = new URL("http://www.io.com/~maus/JavaNetworkingFAQ.html");
            testurl2 = new URL("http://search.yahoo.com/bin/search?p=java");
        }
        catch (MalformedURLException e) {
        }
        urlbutton = new Button("Get the FAQ");
        urlbutton2 = new Button("FAQ (new Page)");
        urlbutton3 = new Button("Search Yahoo");
        add(urlbutton);
        add(urlbutton2);
        add(urlbutton3);
    }

    public boolean action(Event evt, Object obj) {
        if (evt.target == urlbutton) {
            getAppletContext().showDocument(testurl);
        }
        else if (evt.target == urlbutton2) {
            getAppletContext().showDocument(testurl, "_blank");
        }
        else if (evt.target == urlbutton3) {
            getAppletContext().showDocument(testurl2);
        }
        else {
            return  super.action(evt, obj);
        }
        return true;
    }
}

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