Make j2me application jar file

HI,
I am using Eclipse SDK 3.2.1 for developing j2me application in mac os x10.5. i need to create jar, jad file for my application. anybody help me how to do this?

A program I've used before is Java Launcher for making jar/exe files from my classes.
Link to Java Launcher: http://www.syncedit.com/software/javalauncher/
Also, I believe JADMaker can be used to take the jars and create jad files from them.
Also, this site's jad tutorial is pretty nice as well: http://www.autexier.de/jmau/dev/j2me/j2me.html

Similar Messages

Application jar file is corrupt

Hi Everyone,
Having written a very simple application using ME software develeopement kit, when ran the emulator prompts me to either INSTALL APPLICATION or MANAGE CERTIFICATE AURTHORITIES.
If INSTALL APPLICATION is selected I'm then prompted to ENTER A WEBSITE TO INSTALL FROM into a textbox. MANAGE CERTIFICATE AURTHORITIES presents some spurious code and I don't know what it means. However when ran for the first time, everything seemed to go swimmingly untill I was informe of (I Think) 'Application jar file is corrupt' and then subsequently as described above.
I don't know a great deel about computers, but looks to me like a random problem requiring a random solution - very frustrating! If anyone would like to help I'd be very greatful indeed.
James

pavanpotru, welcome to the forum. Please don't post in threads that are long dead. When you have a question, start your own topic. Feel free to provide a link to an old post that may be relevant to your problem.
I'm locking this thread now.
db

Accessing web application JAR files from applet

I've got an applet which is part of a web application.
All the web application JARs are in the webapps/myappl/WEB-INF/lib directory, and I
can't seem to place anything in that directory on the archive attribute of <OBJECT> tag.
I'm running into trouble because I'm sending objects from the servlet to the applet and keep getting classnot found during deserialization because I've missed some jar file on the archive attribute. I've had to copy lots of jar files up to where the codebase in the HTML file is to make this run. My question is this.
Is it better to just change the tomcat security policy file (catalina.policy in tomcat conf directory) so that the JARs are directly accessible and I don't have to copy them from WEB-INF/lib???? Has anyone done this before? What would the line look like?
I'm assuming that I have to follow the instructions (THAT I DON'T UNDERSTAND)
at the bottom of the policy file. Can someone help me out here????
should I have something like
grant codeBase "file:${catalina.home}/webapps/myappl/WEB-INF/classes/-"
{ permission java.security.AllPermission; };
grant codeBase "file:${catalina.home}/webapps/myappl/WEB-INF/lib/-"
{ permission java.security.AllPermission; };
Will this allow me to place references to jar files (and the classes directory) in the archive attribute, such as
<OBJECT ..... >
    <param name="archive" value="../WEB-INF/lib/applet.jar,../WEB-INF/lib/someapp.jar,../WEB-INF/classes" />trailer for catalina.policy is
// You can assign additional permissions to particular web applications by
// adding additional "grant" entries here, based on the code base for that
// application, /WEB-INF/classes/, or /WEB-INF/lib/ jar files.
// Different permissions can be granted to JSP pages, classes loaded from
// the /WEB-INF/classes/ directory, all jar files in the /WEB-INF/lib/
// directory, or even to individual jar files in the /WEB-INF/lib/ directory.
// For instance, assume that the standard "examples" application
// included a JDBC driver that needed to establish a network connection to the
// corresponding database and used the scrape taglib to get the weather from
// the NOAA web server. You might create a "grant" entries like this:
// The permissions granted to the context root directory apply to JSP pages.
// grant codeBase "file:${catalina.home}/webapps/examples/-" {
//   permission java.net.SocketPermission "dbhost.mycompany.com:5432", "connect";
//   permission java.net.SocketPermission "*.noaa.gov:80", "connect";
// The permissions granted to the context WEB-INF/classes directory
// grant codeBase "file:${catalina.home}/webapps/examples/WEB-INF/classes/-" {
// The permission granted to your JDBC driver
// grant codeBase "file:${catalina.home}/webapps/examples/WEB-INF/lib/driver.jar" {
//   permission java.net.SocketPermission "dbhost.mycompany.com:5432", "connect";
// The permission granted to the scrape taglib
// grant codeBase "file:${catalina.home}/webapps/examples/WEB-INF/lib/scrape.jar" {
//   permission java.net.SocketPermission "*.noaa.gov:80", "connect";
// };

Thank you for your reply.
As I mentioned in my first post I had seen a couple of posts mentioning ServletContext before, but dismissed them as I am not using any servlets of my own. However, since you showed me exactly how it was used I realised I could probably just use a dummy servlet to get this information.
The following page suggests a couple of techniques for doing just this.
http://www.jguru.com/forums/view.jsp?EID=1087411
So I think that's me sorted, cheers.

How to know if the current application jar file has been overwritten?

When I overwrite a jar file that is being used, the buttons that call new windows stop responding silently but is there some check I can make from within the application to know if the jar file has been overwritten, so that I can warn the user to restart it?
I know this sounds bad so let me explain why I would want this, if you don't care then skip everything below this point.
I have close to a hundred of users executing Java applications from a central repository in the network. This is important because the applications are always changing and evolving so it's important that I only have to update one binary. I do most updates after work hours so I don't have a problem there but sometimes there are critical errors that need to be corrected immediately. Depending on the amount of people using an application it may be impractical to warn and wait for everyone to close it and make everyone else wait for that so I just overwrite the files that need to be updated and then warn everyone to restart the application. The result is that buttons that call for frames that haven't been called yet stop working silently. Some users already know what to do when that happens but I want a more graceful approach. I wanted to check for this situation from inside the application so that I could inform the user of the update and provide information on what to do next. Can I do this? I tried some try and catch blocks of code but I can't seem to catch anything when that happens.

You can write your own class loader that loads classes from that jar file. Make sure it isn't on the class path and when you want to create an object from that jar file, call up your class loader to do that. (You only have to do that for your "top-level" objects, within those objects creating another object will automatically be done by your class loader.)
Periodically check whether the jar has been modified. If it has, refresh the application by creating a new instance of your class loader and using that to create new instances of all your objects.
But that sounds like a lot of work just to avoid setting up an emergency change procedure where you get everybody to close their applications.

Where i Put my swing application jar file in jboss

Hi experts...
I develope swing application and convert it into jar file....I know jnlp deployment using tomcat..In tomcat i
put my appcation.jar in webapps/root folder...This is not similar in jboss..I dont know where i put my applcation.jar in jboss.If any body know the idea please let me know..

Hi
You have to put your jar file in
server/default/deploy
Regards
M Fazal Ur Rehman

Run applications ( .jar files) by bash on linux

On linux:
I have a swing application and its jar file. I created an executable file using bash script to run the jar file
#!/bin/bash
java -jar myapp.jar
this runs in console normally but when i clicked the executable file, the application runs too but immediately closes. I think the problem is that this can't recognize the swing-layout.jar (swing library) so that the swing components (JFrame,Jbutton) cannot be showed!
There must be a way for the executable file to recognize the libraries (swing, layouts) for the application by using bash script ?

There can be number of reasons for that. I suggest you following way:
1. Modify your script in following way:
#!/bin/bash
java -jar myapp.jar 2>/tmp/log.err 1>/tmp/log.out
After unsuccesful execution check content of /tmp/log.* files and see details of the error.
Often such errors are caused by environment. May be you just don have java in your PATH .. May
be DISPLAY is not set .. I don't know.
To workaround env issue you need to dump environmentin from console:
declare -x >env.sh
After that include update your .sh script in following way and see the difference:
#!/bin/bash
. env.sh
java -jar myapp.jar 2>/tmp/log.err 1>/tmp/log.out

JWS application jar-files are downloaded almost every time

hey,
how can i debug the situation, where my application is downloaded very often (even if i havent updated all of the jar-files, they are all downloaded again)?
can it be that they expire after a certain time? how can i check that?
thanks,
Mait

There are jnlp parameters that can be specified that define when jars are downloaded. This information is in the JWS documentation.

Quickest way to transfer applications/jar files?

Hi,
I've got quite a few files I want to transfer to my phone, the problem is, every 3 or so I install the phone will crash, meaning I have to disconnect the USB cable, turn the phone off, wait for it to boot back up and plug in the cable again - a bit of a pain and is making a time consuming job (with all of the stupid confirmations) a *lot* more time consuming.
Anyway to transfer across loads at once?
Cheers
Solved!
Go to Solution.

Maybe you should get your self a Bluetooth dongle.
BTW, what phone are you talking about?
Grayburn @ www.nokiausers.net & www.dailymobile.se....come say Hello!!!
If you appreciate ANY help from a member,then show it by clicking on the Blue Star button, cheers

Can we make executable jar file which dont have main method?

I have a problem.
With whatever R&D i have done so far my understanding is that in order to create executable jar files i need a main method.
my problem is i have certain MIS reports which are developed in java and deployed through JSP pages...so my java program has no Main Method and only objects of the classes are being called in the JSP pages.
for e.g: i have a java class file BulkSms.class and i make an object of it in the JSP page through which my purpose is achieved by calling various method in the BulkSms through it s objects and there is no main method.
Can i make an executable jar file without a main method and if so please give me a detailed procedure of how to go about it.
i want to make it executable so tht on the click of it the MIS report is displayed from the JSP page.

I am completely ignorant of JSPs, but you can not execute a jar or any java application unless you have a main method. It sounds like you need a way to launch the JSP - can't you do this with a browser?

Running a jar file from java code

Hi!
Im trying to run a jar file from my code.
I've tried Classloader, but that doesnt work because it doesnt find the images (also embedded in the 2nd jar file).
WHat I would like to do is actually RUN the 2nd jar file from the first jar file. There must be a way to do this right?
any ideas?

ok, I found some wonderful code (see below) that will try to start the jar. But it doesn't. What it does is produce the following error when my application runs...
So it's not finding the images in the jar file that I am trying to run? Strange. I checked the URL that sending, but it seems ok....
I think I will check the url again to make sure......
any ideas?
Uncaught error fetching image:
java.lang.NullPointerException
     at sun.awt.image.URLImageSource.getConnection(Unknown Source)
     at sun.awt.image.URLImageSource.getDecoder(Unknown Source)
     at sun.awt.image.InputStreamImageSource.doFetch(Unknown Source)
     at sun.awt.image.ImageFetcher.fetchloop(Unknown Source)
     at sun.awt.image.ImageFetcher.run(Unknown Source)
the code....
/* From http://java.sun.com/docs/books/tutorial/index.html */
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.JarURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.jar.Attributes;
* Runs a jar application from any url. Usage is 'java JarRunner url [args..]'
* where url is the url of the jar file and args is optional arguments to be
* passed to the application's main method.
public class JarRunner {
public static void main(String[] args) {
    URL url = null;
    try {
      url = new URL(args[0]);//"VideoTagger.jar");
    } catch (MalformedURLException e) {
      System.out.println("Invalid URL: ");
    // Create the class loader for the application jar file
    JarClassLoader cl = new JarClassLoader(url);
    // Get the application's main class name
    String name = null;
    try {
      name = cl.getMainClassName();
    } catch (IOException e) {
      System.err.println("I/O error while loading JAR file:");
      e.printStackTrace();
      System.exit(1);
    if (name == null) {
      fatal("Specified jar file does not contain a 'Main-Class'"
          + " manifest attribute");
    // Get arguments for the application
    String[] newArgs = new String[args.length - 1];
    System.arraycopy(args, 1, newArgs, 0, newArgs.length);
    // Invoke application's main class
    try {
      cl.invokeClass(name, newArgs);
    } catch (ClassNotFoundException e) {
      fatal("Class not found: " + name);
    } catch (NoSuchMethodException e) {
      fatal("Class does not define a 'main' method: " + name);
    } catch (InvocationTargetException e) {
      e.getTargetException().printStackTrace();
      System.exit(1);
private static void fatal(String s) {
    System.err.println(s);
    System.exit(1);
* A class loader for loading jar files, both local and remote.
class JarClassLoader extends URLClassLoader {
private URL url;
   * Creates a new JarClassLoader for the specified url.
   * @param url
   *            the url of the jar file
public JarClassLoader(URL url) {
    super(new URL[] { url });
    this.url = url;
   * Returns the name of the jar file main class, or null if no "Main-Class"
   * manifest attributes was defined.
public String getMainClassName() throws IOException {
    URL u = new URL("jar", "", url + "!/");
    JarURLConnection uc = (JarURLConnection) u.openConnection();
    Attributes attr = uc.getMainAttributes();
    return attr != null ? attr.getValue(Attributes.Name.MAIN_CLASS) : null;
   * Invokes the application in this jar file given the name of the main class
   * and an array of arguments. The class must define a static method "main"
   * which takes an array of String arguemtns and is of return type "void".
   * @param name
   *            the name of the main class
   * @param args
   *            the arguments for the application
   * @exception ClassNotFoundException
   *                if the specified class could not be found
   * @exception NoSuchMethodException
   *                if the specified class does not contain a "main" method
   * @exception InvocationTargetException
   *                if the application raised an exception
public void invokeClass(String name, String[] args)
      throws ClassNotFoundException, NoSuchMethodException,
      InvocationTargetException {
    Class c = loadClass(name);
    Method m = c.getMethod("main", new Class[] { args.getClass() });
    m.setAccessible(true);
    int mods = m.getModifiers();
    if (m.getReturnType() != void.class || !Modifier.isStatic(mods)
        || !Modifier.isPublic(mods)) {
      throw new NoSuchMethodException("main");
    try {
      m.invoke(null, new Object[] { args });
    } catch (IllegalAccessException e) {
      // This should not happen, as we have disabled access checks
}

Help needed with jar file

hi, first of all sorry if my post is in wrong forum...but my application is done using swing so i am posting this here....and regarding my question...
I have made an GUI using Java swings and my application is working fine. Now i want to make an executable jar file for my GUI. I have read some tutorilas on making jar files and this is what i have done...
i have created a manifest file called mainClass.txt which has
Main-Class: MainWindow ,where MainWindow is my main class name.
Then i ran the jar utility with this command line:
jar cmf mainClass.txt example.jar *.class
With this line, I told jar to create a JAR file (option c) with modifications to the manifest file (option m) as specified within mainClass.txt, naming the JAR file (option f) as example.jar and including everything that matches the pattern *Class
everything is file till now but my problem is ...I have some library files from JFreechart software included in my GUI to generate barcharts..How can i include these library files in my example.jar file..
Kindly help me
Thanks
byee

I had this problem too. I ran my program out of JCreator and it worked flawlessly. I jarred it up into and Executable Jar and I would get a runtime error explaning I have not included the correct libraries.
What I did was look at the error, for example say it said something like:
org.uhoh.PathSys ClassDefNotFound (or something similar to this)
What I did was extract the library that contained that class file. Then in my project file where I kept my classes I made the folder org, then in org I made uhoh. Inside uhoh I copied over PathSys.class.
I hope I addressed the problem you speak of. I am only a novice but this is how I figured it out. If anyone knows a better way let us know =D

How to open files in MIDP (from the jar file)?

Hello,
I can't seem to figure out how to open a file that is in my MIDP applications jar-File.
From what I've found via Google, I assume that the way to do it should be by using
Connector.openInputStream("file:{path_to_my_file}")
but I only get the error
java.lang.ClassNotFoundException: com.sun.midp.io.j2me.file.Protocol
(Running the Emulator from Suns WTK 2.0 with DefaultColorPhone)
I've also tried file:// with the same result.
Any ideas?
Many thanks in advance!
Bjoern

I think I've found something that looks promising now:
Class.getResourceAsStream()

How to use schema files stored in a jar file

I am in a great trouble in accessing the schema files in the jar file. I have to validate my xml files against those schema files while parsing the xml file. I am unable to get the path of the schema files.
I am getting the path as
E:/ConfigUtility/schemas.jar!/Schema.xsd
which is not a valid path name for windows. Plese help me and send me some code how to access a schema file that is in the jar file.
thanks and regards,
Krishna.

Run the program from command line, this way you will see the errors, if any.
example.: java -jar theJarfile.jar
I was successful in creating a comm application. I placed the win32com.dll in the same directory of my application jar file and all worked.
I also extracted the comm.jar , and jar'd my app with the extracted comm files to make one jar.
I also had a fileWriter() to get the clients jre path and my app would write the javax.properties file to the correct place.
It took me severel weeks and late nights to accomplish this, but it was all necessary to be able to install only my app, and not a bunch of api's that were needed.

Help with JAR Files

OK, folks, I need some help here...
And I have researched on this prior to this post, but I still don't get it.
I have a simple application in Reminder.java file. When I compile it, I get Reminder.class and Reminder$ReminderThread.class, because I have an inner class.
I place those files in Reminder directory. I want to make an executable JAR file, so I made a manifest file outside the Reminder directory that contains these lines
Manifest-Version: 1.0
Main-Class: Reminder.Remindersince the Reminder.class is within the Reminder directory, I understood I had to have a prefix "Reminder."
In the command line, I type
jar cmf manifest Reminder.jar Reminder/Reminder.class Reminder/Reminder$ReminderThread.classAnd I do get a Reminder.jar file, but when I double-click on it, I get a popup saying "Could not find the main class. Program will exit!"
So, what am I doing wrong and how can I fix this? As I said, I have researched, but I can't understand what went wrong nor how to fix the problem.
Any help will be greatly appreciated.

Never mind, I solved it, I was missing a carriage return in my manifest file. I feel so stupid now...

Is there a way to add jar file in my program

sorry to botter you, but i really need help for this, i really dont know how to do it. i have my prog taht i want to put in jar file, that cause no problem, but my program isnt fully functionnal because he use a jar file (my driver to acces my database) taht i had mount in forte. but i cant put in in my class file, because i want my jar to be able to run everuwhere on any computer taht have the jre installed. so in resume, i want to add jar file in my program... can i have to add it in my jar file, or decomrpesse it and put the folder like org.postgre.mfileshere... ????? i really dont know
thx to help me

ok If I understood, you need to add a third part Jar
file to your own Jar File App so...
Yes, you can decompress it in a directory tree and
merge it with your application (i.e) if you have a jar
file like this:
br.com.yourApp.util
and a third part jar file like this:
br.com.thirdPart.tools
br.com.thirdPart.util
you will have these directory trees:
br/com/yourApp/util/
br/com/thirdPart/tools/
br/com/thirdPart/util/
then you can marge it in a unique tree:
br/com/yourApp/util/
....../thirdPart/tools/
................/util/
then you can make a new jar file with it...
.....OR YOU CAN ADD THE PATH where your JDBCDrive is
placed to the classpath of your application just using
the -classpath option execution string of you
application, like this:
C:\jreHome\bin\java.exe -jar -classpath
.;C:\someDir\thirdPart.jar yourApp.jar
That's the better way to do it and then everything
will work! :-)
[]'s Igor
Brazil * * * * *k thx, ill give a try, and give you result later. but can you answer me another question, why when i double click on any jar file executable, sometimes javawa start but do nothing, sometimes they start and said no main class find, sometimes dotn start anymore, and sometimes work perfectly...?? is the jdk taht is not good? i use the last one
or problem with my instalation, or the prog i try to run?
thx

Make j2me application jar file

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