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An applet that is not fetched

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posted 12 years ago

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Hello Colleagues,

For me The fowloowing code seems ok ilieu of error clearnce!
But then why the applet is not able to be seen or the slideshow(ie .avi file) is not forth coming
Any rectification please!
Thanks in abundance!
As
CRMK

import java.awt.*;
import java.applet.*;
import java.net.*;
import java.applet.AudioClip;
import java.awt.Graphics;
import java.awt.event.*;
import java.net.URL;
import javax.swing.JLabel.*;
import javax.swing.JButton.*;
import javax.swing.JDialog;

/**
<HTML>
<HEAD>
<TITLE> Happy New Year</TITLE>

</HEAD>
<BODY>
<APPLET CODE ="AudioPlayerApplet.class" CODEBASE= "." Width =600 Height =700 clip =Uzhaipu1.avi>
</APPLET>
</BODY>
</HTML>
*/

public class AudioPlayerApplet extends Applet {
	Button play ,stop;
   String songfile;
	URL   codebase;
	AudioClip song;

String videoList[]=new String[0];
	public void  init()
	{
		songfile ="Uzhaipu1.avi";
        codebase = getCodeBase();
		song =getAudioClip(codebase,songfile);

play = new Button("Play");
		stop =  new Button("Stop");
		codebase=getCodeBase();
		add(play);
		add(stop);
		play.addActionListener(new ButtonHandler());
		stop.addActionListener(new ButtonHandler());

}

class ButtonHandler  implements ActionListener
	{
	public void actionPerformed (ActionEvent e)
		{

String s = e.getActionCommand();
		      if (s.equals("Play"))
		      song.play();
		      else

if (s.equals("Stop"))
		            stop();

}
	}
     }

Ulf Dittmer

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Posts: 43081

posted 12 years ago

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What does "the applet is not able to be seen" mean, exactly? Are there any error messages in the Java Console?

Comal Rajagopalaratnam Muthukumar

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Posts: 401

posted 12 years ago

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Ulf Dittmer wrote:What does "the applet is not able to be seen" mean, exactly? Are there any error messages in the Java Console?

Hello
Thanks for the clarification querry.
A more simpler one like the follwing (ShahtDesign.java)gets me the output but not the one( ie a slideshow to start with the .avi file). so Please suggest me how do i connect the avi file to my WindowMediaPlayer if i have to use the applet method
Please read the following simpler version and the re read the above problem and help .
Thanking You
As
CRMK

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.applet.Applet;
import java.awt.Graphics.*;
import java.util.*;
import java.io.*;
import java.lang.Math;
import javax.swing.text.*;
import java.text.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.Color;

public class ShaftDesign extends Applet implements ActionListener{

Label prompt1,prompt2,prompt3;
	     TextField input1,input2,input3;

double w,l,bm,FS,fs,zp,d,sut,t,z;
       double pi;

public void init()
		  	{

prompt1=new Label("Enter the span Length");
		  		add(prompt1);
		  		input1=new TextField(10);
		  		add(input1);
		           prompt2=new Label("Enter the load");
		  				add(prompt2);
		  				input2=new TextField(10);
		  		        add(input2);
		  		     prompt3=new Label("Enter UStrength");
		  				add(prompt3);
		  				input3=new TextField(10);
		  		        add(input3);
		  		        input3.addActionListener(this);

}
public void actionPerformed(ActionEvent e)
	{
		Double val1=new Double(input1.getText());
		l= val1.doubleValue();
		Double val2= new Double(input2.getText());
		w=val2.doubleValue();
     Double val3= new Double(input3.getText());
				sut=val3.doubleValue();

input3.addActionListener(this);

repaint();
		}
public void paint(Graphics g)
{
	pi=22.0/7.0;
	FS=2;
	 bm=w * l;
	fs= sut/FS;
	zp= bm/fs;
	z = 32.0 * zp/pi;
	d=Math.pow(z,0.33);

prompt1.setForeground(Color.blue);
				prompt2.setForeground(Color.red);
				prompt3.setForeground(Color.black);

g.drawString( "The Design of Shaft",200,200);
	g.drawString("Diameter of Shat =" +d,200,225);
}
}

Ulf Dittmer

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posted 12 years ago

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The question remains just about the same: what does this code do, and what did you expect it to do instead?

Edited: OK, I just ran it, and it seems fine. I could enter some numbers and it calculated something. So what's the issue?

On an unrelated note: You should get in the habit of using the @Override annotation; it can be a huge time saver by preventing bugs resulting from typos.

Comal Rajagopalaratnam Muthukumar

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Posts: 401

posted 12 years ago

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Ulf Dittmer wrote:The question remains just about the same: what does this code do, and what did you expect it to do instead?

Edited: OK, I just ran it, and it seems fine. I could enter some numbers and it calculated something. So what's the issue?

On an unrelated note: You should get in the habit of using the @Override annotation; it can be a huge time saver by preventing bugs resulting from typos.

Hello

Fine and thanks.
Ok i summarise as follows:-

I hava a medifile with .avi extension (30megabites) that will play only with WindiowMediatorplayer of any computer.
An applet program is to make the file play with an appropriate plugging or any other device like audioclip that is able to get the object of the applet to comnnect with Wmplayer.
That is all is my present problem in a nutshel.
Hece ref my first program &do the needful
Thanks
As
CRMK

Ulf Dittmer

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posted 12 years ago

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So the code in your second post has nothing at all to do with the problem? If so, why did you post it?

As I understand it, you want to create an applet that can play AVI files; is that correct? if so, the simplest approach is probably to use the JMF library - it supports AVI, and does not require native code (which can be tricky to use in an applet). JMF sample code is available here.

Comal Rajagopalaratnam Muthukumar

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posted 12 years ago

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Ulf Dittmer wrote:So the code in your second post has nothing at all to do with the problem? If so, why did you post it?

As I understand it, you want to create an applet that can play AVI files; is that correct? if so, the simplest approach is probably to use the JMF library - it supports AVI, and does not require native code (which can be tricky to use in an applet). JMF sample code is available here.

Hello

Thanks for your help.

JMF library does not have the following API

import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.format.*;

******

Alternatively i tried to use my long .avi (file)to play via the following program.Though
the codes are errorles but still,requires linking device to make use a WindowMediaPlayer
to play the slide show.
Hence please suggest or where can i get the APIS

Thanks
As
CRMK

********************

import javax.swing.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.sound.sampled.*;

public class  VideoPlayer extends JFrame
{
	public  VideoPlayer()
	{
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setTitle("Video File Player");
		setSize(250,100);
		currentDir = new File(System.getProperty("user.dir"));

FilenameFilter filter =new FilenameFilter()
		{
			public boolean accept(File directory ,String filename)
			{
				String name = filename.toLowerCase();

return   name.endsWith(".html")||
				         name.endsWith(".aif")||
				         name.endsWith(".wav");
			}
		};
        String videoFiles[] =  currentDir.list(filter);

if(videoFiles == null || videoFiles.length == 0)
		{
			JOptionPane.showMessageDialog(this,"NoVideofiles -terminating.."," Video Files error",JOptionPane.ERROR_MESSAGE);
			System.exit(1);
		}
		videoChoice = new JComboBox(videoFiles);
		videoChoice.setSelectedIndex(0);

oldFilename = videoFiles[0];
		//player = new ClipPlayer(videoFiles[0]);

videoChoice.addActionListener(new ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
			}
		}

);
	play=new JButton("PLAY");

play.addActionListener(new ActionListener()
	{
		public void actionPerformed(ActionEvent e)
		{

if(e.getActionCommand().equals("PLAY"))
			{
				//play
		}

else
		{
			//stop();
		}

}
});
Container content= getContentPane();
content.add(videoChoice);
content.add(play,BorderLayout.SOUTH);
setVisible(true);
}
public static void main(String[] args)
{
	//void newVideo(String filename);

VideoPlayer videoPlayer =new VideoPlayer();
 }

private File currentDir;
private JComboBox videoChoice;
private JButton play;
private String oldFilename;
//private ClipPlayer player;
}

/**

public class ClipPlayer
{

public ClipPlayer(String filename)
      {

newVideo(filename);

/**

public void play
						    {
							if(clip==null)
							{
								JOptionPane.showMessageDialog(null,"No Clip available","playProblem",JOptionane.WARNING_MESSAGE);
								return;
							}
							clip.loop(clip.LOOP_CONTINUOSLY);
						  }
						void stop()
						{
							if(clip != null)
							clip.loop(0);
						}

}
}
				 play.addActionListener(new ActionListener()
						{
							public void actionPerformed(ActionEvent  e)
						      {
							    if(e.getActionCommand).equals("PLAY")
							     {
								 player.play();
								 play.setText("STOP");
							    }
						         else
							    {
							   player.stop();
							   play.setText("PLAY");
						        }
						     }
						 }

);

public void newVideo(String filename)
		{

File videoFile = new File(currentDir,filename);

try
			  {
				AudioInputStream source =AudioSystem.getAudioInputStream(videoFile);
				DataLine.Info clipInfo=new DataLine.Info (Clip.class,source.getFormat());

if(AudioSystem.isLineSupported(clipInfo))
				{
					Clip newClip=(Clip)AudioSystem.getLine(clipInfo);

newClip.open(source);

if(clip != null)
				{
					if(clip.isActive())
					{
						clip.stop();
						play.setText("PLAY");
					}

if(clip.isOpen())
					     clip.close();
				       }
				   clip= newClip;
				  oldFilename=filename;
			      }
			       else
			        {
				      JOptionPane.showMessageDialog(null,"Clip not Supported","Clip notSupported",JOptionPane.WARNING_MESSAGE);

videoChoice.setSelectedItem(oldFilename);
			  }
			}

catch(UnsupportedAudioFileException e)
				{
					JOptionPane.showMessageDialog(null,"File Not supported","Unsuupportedile Type",JOptionPane.WARNING_MESSAGE);
				}

catch(LineUnavailableException e)
				{
					JOptionPane.showMessageDialog(null,"Clip not available","Clip Error",JOptionPane.WARNING_MESSAGE);
				}

catch(IOException e)
				{
					JOptionPane.showMessageDialog(null,"I/O error creating clip","ClipError",JOptionPane.WARNING_MESSAGE);
				}

videoChoice.addActionListener(new ActionListener()
				{
					public void actionPerformed(ActionEvent e)
					{
						player.newVideo((String)videoChoice.getSelectedItem());
					}

}
		         );

}
private Clip clip;
}

Ulf Dittmer

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Posts: 43081

posted 12 years ago

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For basic operations, JMF does not require any native libraries (and hence linking) - there is a pure-Java version of it.

JMF library does not have the following API

import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.format.*;

What are you basing this statement on? The javadocs indicate otherwise: http://docs.oracle.com/cd/E17802_01/j2se/javase/technologies/desktop/media/jmf/2.1.1/apidocs/

Comal Rajagopalaratnam Muthukumar

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Posts: 401

posted 12 years ago

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Ulf Dittmer wrote:For basic operations, JMF does not require any native libraries (and hence linking) - there is a pure-Java version of it.

JMF library does not have the following API

import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.format.*;

What are you basing this statement on? The javadocs indicate otherwise: http://docs.oracle.com/cd/E17802_01/j2se/javase/technologies/desktop/media/jmf/2.1.1/apidocs/

Hello
Thanks .
Please let me know why the followiing codes do not respond as compared to the ones done with JMF Library.Though
the docs you referred is yet to be made useof and then try for the appropriate output viz(slideshow functioning etc) which requires quite a time inlieu of compiling etc
The following program gives me a message as i showed in th commentline of the program at the end.
Will it take time get the result through theis & if so howlong in an olderwindow based computer
If any minor corrections to be made please help
As
CRMK

import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
import javax.swing.JOptionPane;
import java.awt.Graphics;
import java.net.URL;
import java.applet.AudioClip;

/*
   <APPLET code ="AudioPlayerApplet.class"
	CODEBASE =AudioPlayerApplet.class,Uzhaipu1.avi
    ARCHIVES="class1.jar, extras/class2.jar"
     height=400 width=400>
  </APPLET>.
  */

public class AudioPlayerApplet extends Applet  {
	Button start ,stop;
     	URL   codebase;
	AudioClip song;
   AudioClip bgVideo;

public void init()
	{

song=getAudioClip(getCodeBase(),"loop.avi");
		bgVideo=getAudioClip(getCodeBase(), "class1.jar,extras/class2.jar");

start = new Button("Start");
		stop =  new Button("Stop");
		codebase=getCodeBase();
		add(start);
		add(stop);
		start.addActionListener(new ButtonHandler());
		add(start);
		stop.addActionListener(new ButtonHandler());
           add(stop);

}
  class ButtonHandler implements ActionListener {

public  void actionPerformed(ActionEvent ae )
  {

if (ae.getSource() == start)

{
             System.out.println("AudioPlayerApplet.class" + bgVideo);
              setVisible(true);
             show();

}
         else
         if(ae.getSource() == stop)
         {
			return ;
	}
     }

public void paint(Graphics g)
 		{
 			g.drawString ("AudioPlayerApplet.class",60,100);
 		}
	}

}

//AudioPlayerApplet.classsun.applet.AppletAudioClip@9f671b

Ulf Dittmer

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posted 12 years ago

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Sorry, I don't understand what problem you're facing now. Can you rephrase it?

Comal Rajagopalaratnam Muthukumar

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Posts: 401

posted 12 years ago

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Ulf Dittmer wrote:Sorry, I don't understand what problem you're facing now. Can you rephrase it?

Hello

Please reread the program and reply.ie
Whether the prog is ok or not .My problem in the codementioned , on execution, the applet is not immediately outputted.but it says applet started,taking a lot of time .....(delaying)!
thanks
As
CRMK

Ulf Dittmer

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posted 12 years ago

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The output is what I would expect from this line:

System.out.println("AudioPlayerApplet.class" + bgVideo);

What else are you expecting?

Comal Rajagopalaratnam Muthukumar

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Posts: 401

posted 11 years ago

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Ulf Dittmer wrote:The output is what I would expect from this line:

System.out.println("AudioPlayerApplet.class" + bgVideo);

What else are you expecting?

Hello Marshal

I just do not get the applet in the follwing java prg,though not similar to the one referred above,but i tend to think everything is ok & even with the blank format appearing on dxecution,surprisingly without the applet..is it i am erring fundamentally in the coding or is the applet not trusted in utopian way.
Please help
Thanks
As
CRMk

package sound;
import java.net.*;
import java.net.URL;
import java.awt.*;
import javax.swing.*;
import javax.swing.JFrame;
import java.awt.Color.*;
import java.awt.Graphics;
import java.awt.event.*;
import java.applet.Applet;
import java.applet.AppletContext;
import java.applet.AudioClip;

public class SoundAndImage extends JApplet {

public void init() {

sound.SoundAndImage sai=new SoundAndImage();

Container content = getContentPane();
    URL codebase = getCodeBase(); // where the applet resides
     AudioClip music = getAudioClip(codebase, "0.au");
    music.play();
    Image theImage = getImage(codebase, "duke.running.gif");
    Drawing theDrawing = new Drawing(theImage);
    content.add(theDrawing);
           repaint();
}

class Drawing extends JPanel {
         private Image image;

public Drawing(Image newImage) {
       image = newImage;
  }

public void paintComponent(Graphics window) {
    super.paintComponent(window);
    /*
     * The arguments to drawImage() are:
     * First the image, then
     * the x- and y-coordinates for the top-left corner,
     * the width and the height of the image (it may be resized),
     * background color,
     * ImageObserver, see the online API-documentation.
     */
    window.drawImage(image, 0, 0, 200, 200, Color.red, this);
    return;
  }
}

public static void main(String args[])
	  	  {

JFrame frame = new JFrame();

sound.SoundAndImage sai=new SoundAndImage();

try
	             {

frame.add("Center",sai);
	  	         frame.setVisible(true);
	  	          frame.setSize(200,200);
	               sai.init();

}catch(Exception e)
			   {
			   }
                  frame.addWindowListener(new WindowAdapter() {
	  		   		         public void windowClosing(WindowEvent e) {
	  		   		           System.exit(0);
	  		   		         }
	  		       });

}
}

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