how to open a file using default program

[jaspreet manchinda]

Hello Ranchers
here to disturb you guys again
can any one please tell me how can i open any file using default program
like example : text file with notepad or mp3 file with windows media player or any other player which is my default program or like starting my default browser
or if i just type like for example media player it should start default player
please help

[J. Kevin Robbins]

Check the api for response.setContentType().

[Jelle Klap]

You could use java.lang.Runtime to call the Windows command interpreter cmd.exe with the /c start option and provide a path to the file you want opened using the default program, if any.

[jaspreet manchinda]

Jelle Klap wrote:You could use java.lang.Runtime to call the Windows command interpreter cmd.exe with the /c start option and provide a path to the file you want opened using the default program, if any.

i tried doing that but m not abel to open images and audio files

[jaspreet manchinda]

i tried opening it with Desktop.getDesktop().open
code compiled even executed but did not played the file

import java.io.IOException;
import java.awt.Desktop;

public class OpenFolderInJava 
{
   public static void main(String args[])
	{
	try
  					{
			
						File f = new File(eg.mp3");
						if (f.exists()) 
						{
							if (Desktop.isDesktopSupported()) 
							{
							Desktop.getDesktop().open(f);
							} 
				
							else 
							{
							System.out.println("File does not exists!");
							}
  			
						}
					}
					catch(Exception ert)
					{}
	}
}

[Campbell Ritchie]

. . . and with an empty catch block, you will never know what went wrong. At least put ert.printStackTrace(); in it, then you will have some idea what has happened.

[Jelle Klap]

Right, Desktop would be your best option as of Java 1.6.
I think it's very likely you're swallowing some kind of exception in your current program.

Edit: Tooooooo sloooooooow.

[jaspreet manchinda]

Campbell Ritchie wrote: . . . and with an empty catch block, you will never know what went wrong. At least put ert.printStackTrace(); in it, then you will have some idea what has happened.

i forgot to do that well its giving
java.io.IOException: Failed to open file: .mp3. Error message: Unspecified error

at sun.awt.windows.WDesktopPeer.ShellExecute(Unknown Source)
at sun.awt.windows.WDesktopPeer.open(Unknown Source)
at java.awt.Desktop.open(Unknown Source)
at OpenFolderInJava.main(OpenFolderInJava.java:25)

[Jelle Klap]

Dang, I would've bet my house on a FileNotfoundException
Try opening the file using a canonical path as stated in this bug database entry: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6385002