Java project

[trublu]

I was thinking of making a multimedia player as a part of my Java project.It wud b a basic one,other features wud b added as i learn more.So,the question is,can it b done using Java only? Or do i need to study ne thing else?Pls suggest some useful resources too.

[chandru.in]

Java alone is more than enough. You need to use JMF (Java Media Framework) for this.

[prasath_amd]

Or check this out, this is source code for a bare-bone command-line Java mp3 player:-

http://www.javalobby.org/java/forums/t18465.html

I've modified the Command-line player with a JFrame window :-


import java.io.FileInputStream;
import java.io.IOException;
import javax.sound.sampled.*;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.Thread;

import Limit.*;

public class Jmp3 extends JFrame implements ActionListener
{

JButton open,close;
JFileChooser jfc;

Jmp3()
{
super("Java MP3 Player");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new FlowLayout());
setSize(400,300);
setVisible(true);
close = new JButton("Close");
open = new JButton("Open");
close.addActionListener(this);
open.addActionListener(this);
this.add(close);
this.add(open);

jfc = new JFileChooser();
jfc.addChoosableFileFilter(new ImageFilter());
}

public void actionPerformed(ActionEvent ae)
{
if(ae.getActionCommand() == "Close")
System.exit(0);
if(ae.getActionCommand() == "Open")
play();

}

public void play()
{
if(jfc.showOpenDialog(this) == JFileChooser.APPROVE_OPTION)
{
AudioInputStream din = null;
try
{
FileInputStream file = new FileInputStream(jfc.getSelectedFile());
AudioInputStream in = AudioSystem.getAudioInputStream(file);
AudioFormat baseFormat = in.getFormat();
AudioFormat decodedFormat = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
baseFormat.getSampleRate(), 16, baseFormat.getChannels(),
baseFormat.getChannels() * 2, baseFormat.getSampleRate(),
false);
din = AudioSystem.getAudioInputStream(decodedFormat, in);
DataLine.Info info = new DataLine.Info(SourceDataLine.class, decodedFormat);
SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info);
if(line != null)
{
line.open(decodedFormat);
byte[] data = new byte[4096];

// Start

line.start();

int nBytesRead;

while ((nBytesRead = din.read(data, 0, data.length)) != -1)
{
line.write(data, 0, nBytesRead);
}
}

}
catch(Exception e)
{
e.printStackTrace();
}
finally
{
if(din != null)
{
try
{
din.close();
}
catch(IOException e)
{
// Nothing here
}
}
}
}
}

public static void main(String[] args)
{
new Jmp3();
}
}



package Limit;

import java.io.File;
import javax.swing.*;
import javax.swing.filechooser.*;

public class ImageFilter extends FileFilter
{
public boolean accept(File f)
{
String extension = Utils.getExtension(f);
if (extension != null)
{
if (extension.equals(Utils.bpt))
{
return true;
}
else
{
return false;
}
}
return false;
}

public String getDescription()
{
return "MP3 Audio File (.mp3)";
}
}

class Utils
{
public final static String bpt = "mp3";

public static String getExtension(File f)
{
String ext = null;
String s = f.getName();
int i = s.lastIndexOf('.');

if (i > 0 && i < s.length() - 1)
ext = s.substring(i+1).toLowerCase();

return ext;
}
}

[trublu]

Thankx both of you.
@prasath_amd,thanx for the code.but i prefer to do it myself.

how do i add codec support?

[prasath_amd]

@prasath_amd,thanx for the code.but i prefer to do it myself.

I gave it only to give u some basic idea tats all.......

how do i add codec support?

don know abt tat.....but i think JMF should do it.......

JMF:-

http://java.sun.com/javase/technologies/desktop/media/jmf/index.jsp

This may be useful for u:-

http://www.javaranch.com/

[trublu]

I gave it only to give u some basic idea tats all.......


I really appreciate your help.I just said dat i wanna do it myself.

[Plasma_Snake]

Sorry for budging in but I too have to give a Minor Project after my vacations. I know Core JAVA only and was thinking about making a Torrent Client. Is it possible to make one with my limited knowledge of the subject? Where can i get its exemplary Source Code? :confused:

[bukaida]

Search here:-

http://java.codeproject.com/

BTW You must know how to write the project report too. It should follow a specified format.

[shwetz]

i also need to make a java project...i knw basic java programming till applets..i also want to giv it a interface....

[QwertyManiac]

Learn AWT and then Swing for that.

[mahender_joshi]

i need hrlp for search engine project on JAVA,,i m begnner for this,,,plzzzzzz