Creating the About Dialog Box

package MediaPlayer;
import java.awt.*;
import java.awt.event.*;
/*
<applet code="AboutDialog" width=250 height=250>
</applet>
*/
public class AboutDialog extends Dialog implements ActionListener{
    Font f;
    @SuppressWarnings("LeakingThisInConstructor")
    AboutDialog(Frame parent,String title)
    {
        super(parent, title, false);
        setLayout(new FlowLayout());
        setSize(300, 200);
        //Setting up the font
        f=new Font("Dialog",Font.BOLD,12);
        setFont(f);
        //Creating a button to close this dialog box
        Button b;
        add(b = new Button("Close"));
        b.addActionListener(this);
     }
    @Override
    public void actionPerformed(ActionEvent ae) {
    dispose();
    }
    @Override
    public void paint(Graphics g) {
      g.drawString("Simple Wav media player", 20, 70);
      g.drawString("Version:     1.0", 20, 100);
      g.drawString("Vendor:      Gojkid", 20, 130);
      g.drawString("Homepage:    http://gojkid.in", 20, 160);
      
}  
}

Creating the frame & menus for the media player. In other words creating a subclass of Frame.

package MediaPlayer;

import java.awt.*;

class MenuFrame extends Frame {
String msg = "";
String path;
Font f;
Button replay,stop;
MenuFrame(String title) {
super(title);
f=new Font("Monospaced",Font.BOLD,14);

setFont(f);
// create menu bar and add it to frame
MenuBar mbar = new MenuBar();
setMenuBar(mbar);
// create the menu items
Menu file = new Menu("File");
MenuItem item1, item2,item3,item6,item7;
file.add(item1 = new MenuItem("Open..."));
file.add(item6 = new MenuItem("Edit Playlist..."));
file.add(item7 = new MenuItem("Play all..."));
file.add(new MenuItem("-"));
file.add(item2 = new MenuItem("Close..."));
file.add(item3 = new MenuItem("Quit..."));
mbar.add(file);
Menu help = new Menu("Help");
MenuItem item4,item5;
help.add(item4 = new MenuItem("About..."));
help.add(new MenuItem("-"));
help.add(item5 = new MenuItem("Close..."));
mbar.add(help);
replay=new Button("Replay");
add(replay);
stop=new Button("Stop");
add(stop);
// create an object to handle action and item events
MyMenuHandler handler = new MyMenuHandler(this);
// register it to receive those events
item1.addActionListener(handler);
item6.addActionListener(handler);
item7.addActionListener(handler);
item2.addActionListener(handler);
item3.addActionListener(handler);
item4.addActionListener(handler);
item5.addActionListener(handler);
replay.addActionListener(handler);
stop.addActionListener(handler);
// create an object to handle window events
MyWindowAdapter adapter = new MyWindowAdapter(this);
// register it to receive those events
addWindowListener(adapter);

    setLayout(new FlowLayout());
    setSize(600, 300);
    setVisible(true);
}

    @Override
public void paint(Graphics g)
{  
    setBackground(new Color(200,200,200));
    if(msg.contains("\\"))
    g.drawString("Now Playing :"+msg, 10, 75);
    else
    g.drawString(msg, 10, 150);
}
    @Override
   public void dispose() {
        
    }
}

Creating a subclass of WindowAdapter

package MediaPlayer;

import java.awt.event.*;

class MyWindowAdapter extends WindowAdapter {
MenuFrame menuFrame;
public MyWindowAdapter(MenuFrame menuFrame) {
this.menuFrame = menuFrame;
}
    @Override
public void windowClosing(WindowEvent we) {
menuFrame.dispose();
}
}

Acting upon various user inputs i.e events provided. Also contains the logic for playing a Audio Clip.

package MediaPlayer;

import java.awt.event.*;
import java.awt.*;
import java.applet.*;
import java.net.*;

class MyMenuHandler implements ActionListener, ItemListener {
MenuFrame menuFrame;
AudioClip bach;
Button play, stop;
String msg = "";
public MyMenuHandler(MenuFrame menuFrame) {
this.menuFrame = menuFrame;

}
// Handle action events
    @Override
public void actionPerformed(ActionEvent ae) {
String arg = (String)ae.getActionCommand();
// Activate file selector when open is selected.
if(arg.equals("Open...")) {
FileDialog fd = new FileDialog(menuFrame, "File Selector",FileDialog.LOAD);
fd.setVisible(true);
msg=fd.getDirectory()+fd.getFile();
    try{
      //Select the file to be played  
      bach = Applet.newAudioClip(new URL("file:"+msg));
    }
    catch (MalformedURLException mfe){
    }
    //Playing the file
    bach.play();
}
// Activate Playlist Dialog when Edit playlist is selected
else if(arg.equals("Edit Playlist..."))
{
    PlaylistDialog pd = new PlaylistDialog(menuFrame, "Playlist Editor");
    pd.setVisible(true);
}
// Activate Play All Dialog when Play All is selected
else if(arg.equals("Play all..."))
{
    PlayAllDialog pad=new PlayAllDialog(menuFrame,"Play all files from database");
    pad.setVisible(true);
}
// Activate About Dialog when About is selected.
else if(arg.equals("About...")){
AboutDialog ad = new AboutDialog(menuFrame, "About");
ad.setVisible(true);
}
//Playing the file again after its stopped
else if(arg.equals("Replay"))
{
        try{
      //Select the file to be played  
      bach = Applet.newAudioClip(new URL("file:"+msg));
    }
    catch (MalformedURLException mfe){
    }
    //Playing the file
    bach.play();
}
//Stopping the Audio clip when stop button is pressed
else if(arg.equals("Stop"))
{
    if(bach!=null){
    bach.stop();
    bach=null;
    }
    else
    msg="Error : File Not Selected";
}
//Exiting JVM when Quit is selected
else if(arg.equals("Quit..."))
{
    msg="   Thank you , for using our media player";
    dispose();
    System.exit(1);
}

            
menuFrame.msg = msg;
menuFrame.repaint();
}
    @Override
public void itemStateChanged(ItemEvent ie) {
menuFrame.repaint();
}
    private void dispose() {
        
    }
}

This class had been used to create a dialog box that will select media files to the system's default playlist.

package MediaPlayer;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
/*
<applet code="PlaylistDialog" width=600 height=600>
</applet>
*/
public class PlaylistDialog extends Dialog implements ActionListener{
    Font f;
    Button open,close,reset;
    MenuFrame menuframe;
    String msg;
    Graphics g;
    private static String path="C:\\playlist.txt";   //path of your playlist file
    @SuppressWarnings("LeakingThisInConstructor")
    PlaylistDialog(Frame parent,String title)
    {
        super(parent, title, false);
        setLayout(new FlowLayout());
        setSize(600, 600);
        //Setting up the font
        f=new Font("Dialog",Font.BOLD,12);
        setFont(f);
        add(open = new Button("Add to playlist"));
        open.addActionListener(this);
        add(reset = new Button("Reset Playlist"));
        reset.addActionListener(this);
        add(close = new Button("Close"));
        close.addActionListener(this);
     }
    @Override
    public void actionPerformed(ActionEvent ae) {
    String arg = (String)ae.getActionCommand();
    // Activate file selector when open is selected.
    if(arg.equals("Add to playlist")) {
    FileDialog fd = new FileDialog(menuframe, "File Selector",FileDialog.LOAD);
    fd.setVisible(true);
    msg=fd.getDirectory()+fd.getFile();
    try{
        FileWriter fw = new FileWriter(path, true);
        fw.write(msg);
        fw.write("\n");
        fw.close();
    }
    catch (Exception e){
    }
}
    // Flush out the elements of the playlist
    else if(arg.equals("Reset Playlist"))
    {
       try{
        FileWriter fw = new FileWriter(path);
        fw.write("");
        fw.close();
    }
    catch (Exception e){
    } 
    }
// Activate About Dialog when About is selected.
else if(arg.equals("Close")){
    dispose();
}
    }
    @Override
    public void paint(Graphics g) {
        if(msg!=null)
       g.drawString(msg+" had been added to playlist successfully", 20, 130);
}
    
}

This class is designed to create a dialog box where there will be start button to play all the songs in the database,& another button to close it.

package MediaPlayer;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.applet.*;
import java.net.*;
/*
<applet code="PlayAllDialog" width=600 height=600>
</applet>
*/
public class PlayAllDialog extends Dialog implements ActionListener{
    Font f;
    Button close,start;
    MenuFrame menuframe;
    String t;
    Graphics g;
    AudioClip bach;
    private static String path="C:\\playlist.txt";   //path of your playlist file
    @SuppressWarnings("LeakingThisInConstructor")
    PlayAllDialog(Frame parent,String title)
    {
        super(parent, title, false);
        setLayout(new FlowLayout());
        setSize(600, 600);
        //Setting up the font
        f=new Font("Dialog",Font.BOLD,12);
        setFont(f);
        add(start = new Button("Start"));
        start.addActionListener(this);
        add(close = new Button("Close Window"));
        close.addActionListener(this);
     }
    @Override
    public void actionPerformed(ActionEvent ae) {
    String arg = (String)ae.getActionCommand();
    // Activate file selector when open is selected.
    
     if(arg.equals("Start")){
     try
    {
        FileReader fr1 = new FileReader(path);
        BufferedReader br1 = new BufferedReader(fr1);
        while ((t = br1.readLine()) != null) {
            bach = Applet.newAudioClip(new URL("file:"+t));
            bach.play();
            Thread.sleep(10000L);
            bach.stop();
        }
    }
    catch(Exception e)
    {
    }
     }
    else if(arg.equals("Close Window"))
    {
     dispose();   
    } 
    }
    @Override
    public void paint(Graphics g) {
        if(t!=null)
       g.drawString("Now playing :"+t, 20, 130);
}
    
}

This is the main controlling class of this package. Creates a frame window named 'Gojkid Media Player'.

package MediaPlayer;
import java.applet.*;
import java.awt.*;

public class MediaPlayer extends Applet{
    Frame f;
    @Override
    public void init() {
    f = new MenuFrame("Gojkid Media Player");
    int width = 600;
    int height = 300;
    setSize(width, height);
    f.setSize(width, height);
    f.setVisible(true);
}
    @Override
public void start() {
f.setVisible(true);
}
    @Override
public void stop() {
f.setVisible(false);
}
    @Override
public void destroy(){
    f.setVisible(false);
}
}