Setting file assoc. to my java app

Hello!
I created an XML editor in Java and I want to set it up as the default application when I double-click an XML file. I realize this is mostly a Windows XP question, but I've set up file associations before with no problems and yet for some reason the same steps aren't working when I try to associate a file extension to a .jar file (my Java app). So there seems to be something special about setting up a Java application like this, and thus I hoped somebody here would be able to shed some light.
Anyway, when I go the normal path of setting up the file association (Tools -> Folder Options -> browse to my app), Windows seems to take it fine, but when I double-click on an XML file it says "<filename.xml> is not a valid Win32 application." That seems strange to me because it's complaining about the XML file itself not being a valid app, rather than my XML Editor app that I actually pointed at that file extension.
So I tried using 'assoc' and 'ftype' in a DOS console:
C:\>assoc .xml=XMLFile
.xml=XMLFile
C:\>ftype XMLFile=C:\Program Files (x86)\Java\jre1.6.0_07\bin\java -cp C:\JavaProjects\XMLEditor\dist\XMLEditor.jar %1
XMLFile=C:\Program Files (x86)\Java\jre1.6.0_07\bin\java -cp C:\JavaProjects\XMLEditor\dist\XMLEditor.jar %1
But still, double-clicking an XML file causes the same Windows error message: "<filename.xml> is not a valid Win32 application."
Has anyone else tried to do this before and actually succeeded?
Thanks!

As this is a question about configuring windows, You may have more luck asking a windows forum.

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This example shows how to create a simple download manager in Java. It contains four classes in foru Java source files:
Download.java: Contains Download class which downloads a file from a URL.
DownloadManager.java: Contains the main class for download manager application.
DownloadsTableModel.java: Contains the class which manages the download table's data.
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    private int status; // current status of download
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    public int getColumnCount() {
        return columnNames.length;
    // Get a column's name.
    public String getColumnName(int col) {
        return columnNames[col];
    // Get a column's class.
    public Class getColumnClass(int col) {
        return columnClasses[col];
    // Get table's row count.
    public int getRowCount() {
        return downloadList.size();
    // Get value for a specific row and column combination.
    public Object getValueAt(int row, int col) {
        Download download = (Download) downloadList.get(row);
        switch (col) {
            case 0: // URL
                return download.getUrl();
            case 1: // Size
                int size = download.getSize();
                return (size == -1) ? "" : Integer.toString(size);
            case 2: // Progress
                return new Float(download.getProgress());
            case 3: // Status
                return Download.STATUSES[download.getStatus()];
        return "";
/* Update is called when a Download notifies its
     observers of any changes */
    public void update(Observable o, Object arg) {
        int index = downloadList.indexOf(o);
        // Fire table row update notification to table.
        fireTableRowsUpdated(index, index);
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import javax.swing.*;
import javax.swing.table.*;
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Thank you for the quick reply! But the solution provided by you, it seems, has still not been able to address my issue. I ran the program at command prompt with your said parameters, but the download still gave an error in the App window.
Also, is there some way of defining these parameters in the source code? I am keen in using NetBeans to run the program.
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Yes this is possible. I've been using Apple Configurator to do this (you could also use iTunes to restore backups). The trick is, you need to tell the end user not to sync apps within his/her iTunes on his/her computer. You will need to instruct the end user to download apps OTA using the App Store on the iPad rather than with iTunes on his/her computer. If the user tries to sync apps on his/her computer, it will wipe out apps that you installed. However if the user downloads apps OTA, your apps and the user downloaded apps will both stay on the iPad.
When you hand the iPad to the user, be sure to log out of your company Apple ID on the iPad at Settings -> Store and have them sign in with their personal Apple ID. That way it is all set for them to download apps under their own Apple ID.
~Joe

Error when deploying EAR file: Operation failed with error: java:/app/jdbc/

I created application using JDeveloper 11g, and have the deploy file EAR read to deploy to oracle application server 10g, but I am encouting the error of Operation failed with error: java:/app/jdbc/jdbc/HRConnDS not found
Below is the log. What did i do wrong? I have created the datasource of HRConnDS, and it shows in EM.
Nov 6, 2009 10:06:12 AM] Application Deployer for hra1 STARTS.
[Nov 6, 2009 10:06:12 AM] Copy the archive to /u01/OraHome_app1/j2ee/home/applications/hra1.ear
[Nov 6, 2009 10:06:12 AM] Initialize /u01/OraHome_app1/j2ee/home/applications/hra1.ear begins...
[Nov 6, 2009 10:06:12 AM] Unpacking hra1.ear
[Nov 6, 2009 10:06:12 AM] Done unpacking hra1.ear
[Nov 6, 2009 10:06:12 AM] Unpacking webapp2.war
[Nov 6, 2009 10:06:12 AM] Done unpacking webapp2.war
[Nov 6, 2009 10:06:12 AM] Initialize /u01/OraHome_app1/j2ee/home/applications/hra1.ear ends...
[Nov 6, 2009 10:06:12 AM] Starting application : hra1
[Nov 6, 2009 10:06:12 AM] Initializing ClassLoader(s)
[Nov 6, 2009 10:06:12 AM] Initializing EJB container
[Nov 6, 2009 10:06:12 AM] Loading connector(s)
[Nov 6, 2009 10:06:12 AM] Starting up resource adapters
[Nov 6, 2009 10:06:12 AM] application : hra1 is in failed state
[Nov 6, 2009 10:06:12 AM] Operation failed with error: java:/app/jdbc/jdbc/HRConnDS not found
Thank you very much for your help.

How did you create your datasource, can you post the content, without passwords of course.
Greetings.

What path to use to access network files from Java app running on Mac

I have a Java app running on a Mac with OS X that I'm using to check for files that exists on Windows servers within our network.
Using a path like /Volumes/<Share>/ works because I've already connected to the drive using Finder. If I try to use a fully qualify the path with "smb://<Server>/<Share>" then my app doesn't see anything. Is there any way that I can get Java to connect to a directory without first having mapped or made the connection via some external tool like Finder?
Here's the code I'm testing with:
package FileImports;
import java.io.File;
import java.util.Arrays;
public class Dir {
static int indentLevel = -1;
static void listPath(File path) {
File files[];
indentLevel++;
files = path.listFiles();
if (!(files == null)){
Arrays.sort(files);
for (int i = 0, n = files.length; i < n; i++) {
for (int indent = 0; indent < indentLevel; indent++) {
System.out.print(" ");
System.out.println(files.toString());
if (files[i].isDirectory()) {
listPath(files[i]);
indentLevel--;
} else System.out.println("Directory not accessible!");
public static void main(String args[]) {
// this path works where <share> = the directory where my files exist.
listPath(new File("/Volumes/<share>"));
// this path returns a null result in files
// listPath(new File("smb://<Server>/<Share>/"));
Thanks,
Alex
Edited by: agates on Sep 25, 2008 11:14 AM

agates wrote:
Thanks for the response. I'll have to dig a little deeper into JCIFS. It looks like it would work great windows to windows. I haven't been able to find in the documentation where it would work on OS X without having to mount the targeted file system first. Has anyone had success creating a connection to a windows file system from OS X with JCIFS?Since jCIFS is written in pure Java and implements the entire SMB/CIFS protocoll on it's own it doesn't require any support from the OS (apart from a normal JVM runnig). Thus it should work exactly the same in OS X and Windows (and Linux and Solaris and ...).

Opening a file from a java app (not applet)

My program can't find the text file I'm trying to open in my stand-alone java app. I am specifying it like this:
File filename = new File("myfile.txt");
FileReader = new FileReader(filename);
It is in the same directly as the class files. It won't find it when it's in a jar file either. I had a similar problem with an applet a lont time ago, but that turned out to be a security issue, which I assume normal apps don't have.
So, what's up with this?

If system become larger, there are duplicated files
can be found in different directories.
Using classpath may cause problem, if there are
duplicated file name.
If you are coding, you should know exact location of
the file to be opened.
"system become larger" - huh? You control the classpath on a per-app basis, not one huge monolithic classpath containing all jars/folders for all apps.
It's common, well-designed practice to use the classpath. It's bad practice to hard-code directory names and expect all deployments of the app to follow the same directory naming convention. I wouldn't want you to dictate to me where to put the file on my hard drive. I should be able to install it anywhere I want, and let it find it (via the classpath, in this instance).

Drag and drop file onto java app

Hi,
I would like to drag and drop a file from windows explorer onto a panel in my java app.
All I need is that when the file is 'dropped', I can get a reference to the path of file.
e.g.
There is a file, C:\myFile.txt
There is a String in my program called 'filePath'.
I start my java app and dnd the file onto it.
I want the path of the file to be assigned to the filePath String.
I can then do more proccessing on the file which I already know how to do.
Can anyone help.
Thanks,
Jim

Tristan,
I am stuck in the same place. Perhaps we could work on this together.
I am trying to drag a single item from a JList to a text editor, Word, etc. I have two problems:
1) I can't seem to get just the item in the JList to drag. It wants to drag the entire JList component.
2) How does one define the remote application as the drop target? Have not found any examples either.
Is the drop target actually the system clipboard?
Rp

Set up DB Connection Pool for Oracle DataBase Using Java App Server8

Hi,
In the Admin Console of Java App Server 8, I tried to create a connection pool for the oracle database. I chose Resource Type to be "javax.sql.ConnectionPoolDataSource" and the Vendor is Oracle. So the Data Source Class Name is filled by the system to be "oracle.jdbc.pool.OracleConnectionPoolDataSource". Now, I set up the class path to point to the database driver class "sun.jdbc.odbc.JdbcOdbcDriver" and also the to the Data Source Class Name. Also I set up the JVM options in the console. Restart the server, and then try to ping to the database, but get the error:
Operation 'pingConnectionPool' failed in 'resources' Config Mbean. Target exception message: Connection could not be allocated because: No suitable driver
I don't understand what else I should do and why this error is coming?
Please help me out.
Thank you
Regards,
Sarah

Hi,
I've already solve the problem. I did the following:
set the Url to be: jdbc:oracle:thin:@hostname:port:SID
set username
set password
add oracle.jdbc.drivers.OracleDriver into the JVM options -Djdbc.drivers
restart the server
test the connection
it works :)

How to run Java App in Jar file

I can run Java App jar-ed into 1 jar file with java -jar App.jar
But sometimes I need to jar only the app and bind the other classes from different place. So I tried to use:
java -classpath c:\utils.jar -jar App2.jar
where classes in App2.jar link to utils.jar. I just can't make it work. Any idea/help.
thanks
-ho

hi HasanOen
u need to edit the manifest file in yr JAR file u can do this by using the following cammand or by making the batch file but make sure all the files are in same folder.
first of all u need to make a text file like below
/////////// first file name: "THIS.txt" /////////
Manifest-Version: 1.0
Created-By: java // whatever here
Main-Class: PUT YOUR MAIN CLASS NAME HERE (like MAIN)
//////////////////// BATCH FILE "RUN.bat" //////////////
jar cmf This.txt App2.jar MANIFEST.mf com
com is the folder where your all the class file are.
now double click the run.bat file. this will edit yr manifest file.
hope this should work for u
Note : Make sure yr jar file, txt file, bat file, and yr classes folder is in the same folder(I mean at same level)
regards
Satinderjit

Setting file assoc. to my java app

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