Source Code : Your own Applet runtime environment

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Your own Applet runtime environment

   
import java.applet.Applet;
import java.applet.AppletContext;
import java.applet.AppletStub;
import java.applet.AudioClip;
import java.awt.Button;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Panel;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;

public class MainClass extends Applet implements ActionListener {
  static MainClass myApplet;

  static MyStub myStub;

  Image im;

  public void init() {
    System.out.println("Code base = " + getCodeBase());
    System.out.println("Document base = " + getDocumentBase());

    System.out.println("
init () called");
    System.out.println("isActive () returns " + isActive());

    Button b = new Button("Visit www.java2s.com");
    b.addActionListener(this);
    add(b);

    b = new Button("Audio");
    b.addActionListener(this);
    add(b);

    String imageName = getParameter("image");

    if (imageName != null)
      im = getImage(getCodeBase(), imageName);
  }

  public void start() {
    System.out.println("start () called");
    System.out.println("isActive () returns " + isActive());
  }

  public void paint(Graphics g) {
    if (im != null)
      g.drawImage(im, 0, 0, this);
  }

  public void actionPerformed(ActionEvent e) {
    if (e.getActionCommand().equals("Audio")) {
      String soundName = getParameter("audio");

      if (soundName != null) {
        AudioClip ac = getAudioClip(getDocumentBase(), soundName);

        ac.play();
      }

      return;
    }

    try {
      URL u = new URL("http://www.java2s.com");
      getAppletContext().showDocument(u);
    } catch (MalformedURLException exc) {
      System.out.println(e);
    }
  }

  public void stop() {
    System.out.println("stop () called");
    System.out.println("isActive () returns " + isActive());
  }

  public void destroy() {
    System.out.println("destroy () called");
    System.out.println("isActive () returns " + isActive());
  }

  public static void main(String[] args) {
    Frame frame = new Frame("AppletAndApp as an Application");
    myApplet = new MainClass();

    frame.add(new Panel().add(myApplet));

    frame.addNotify();

    myApplet.setStub(myStub = new MyStub(args));
    myApplet.init();

    frame.setSize(300, 200);
    frame.setVisible(true);

    myStub.setActive(true);
    myApplet.start();

    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent w) {
        myStub.setActive(false);
        myApplet.stop();
        myApplet.destroy();
        System.exit(0);
      }
    });
  }
}

class MyStub implements AppletStub {
  private boolean active = false;

  private Hashtable ht = new Hashtable();

  private MyContext context;

  MyStub(String[] args) {
    context = new MyContext(); 
    if ((args.length & 1) != 0)
      return;

    for (int i = 0; i < args.length; i += 2)
      ht.put(args[i], args[i + 1]);
  }

  public boolean isActive() {
    return active;
  }

  public URL getDocumentBase() {
    URL u = null;

    try {
      u = new URL("file:/C:./x.html");
    } catch (MalformedURLException e) {
    }

    return u;
  }
  public URL getCodeBase() {
    URL u = null;
    try {
      u = new URL("file:/C:./");
    } catch (MalformedURLException e) {
    }

    return u;
  }

  public String getParameter(String name) {
    return (String) ht.get(name);
  }

  public AppletContext getAppletContext() {
    return context;
  }

  public void appletResize(int width, int height) {
  }

  public void setActive(boolean active) {
    this.active = active;
  }
}

class MyContext implements AppletContext {
  public AudioClip getAudioClip(URL url) {
    return Applet.newAudioClip(url);
  }
  public Image getImage(URL url) {
    Toolkit tk = Toolkit.getDefaultToolkit();
    return tk.getImage(url);
  }

  public Applet getApplet(String name) {
    return null;
  }

  public Enumeration getApplets() {
    return null;
  }

  public void showDocument(URL url) {
    System.out.println("Showing document " + url);
  }

  public void showDocument(URL url, String frame) {
    try {
      showDocument(new URL(url.toString() + frame));
    } catch (MalformedURLException e) {
    }
  }

  public void showStatus(String message) {
    System.out.println(message);
  }

  public void setStream(String key, InputStream stream) throws IOException {
  }

  public InputStream getStream(String key) {
    return null;
  }

  public Iterator<String> getStreamKeys() {
    return null;
  }
}

           
         
    
    
  

Thank with us