Problem in executing jar file

Hello,
I have created jar file. after it is double-clicked, the menu form is coming and it is executing correctly. the problem is reading from database but not writing to it. it is now displaying any error msg. y it is happening?
i am havng database in the same directory where my jar file is.
Thanks,
Sri

maybe you have made an error in the code for reading. execute the jar with the command line: java -jar <jar-file> and then execute the operation. if there is an error it display to you

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Newbie's problem with executable jar file

hello
i create an executable jar file and it seems ok except it fails to locate all of my image files.
when i use
java -jar myproject.jar
it fails to display included pictures and files.
however, when i extract this jar file and run, it works fine (displays everything).
do i need to do add some informations about these included file's information into Manifest file?
thank you

thank you for the reply.
i have searched through java, and find "class javax.commerce.cassette.JARCassetteLoader". is this one you referred? i have used file related examples from the java-swing samples.
//post - return the file path
protected static ImageIcon getImageIcon(String path)
java.net.URL imgURL = TestDialog.class.getResource(path);
if (imgURL != null)
return new ImageIcon(imgURL, description);
else
System.out.println("Couldn't find file: " + path);
return null;
then i just use
ImageIcon icon = getImageIcon("images"+File.separator+"simple.gif"); // images\simple.gif
thank you

Problem with executable jar file

Hi,
I wrote a simple little xml based app in eclipse, it had xalan and xerces in build path. I created an executuable jar that ran fine on my machine; I was able to move it to different directories and launch it successfully, but when I put the jar file on a network directory and asked a coworker to try running it, they got a message that said it couldn't find the main class.
how do you deal with that?
thanks,
bp

they got a message that said it couldn't find the main class.
Are you sure?
If you are sure then none of the other responses will help.
That error suggests one of the following
1. The jar you moved is not the jar that you are running.
2. Your co-workers did not execute it correctly.
3. You do not have an executable jar (and you are not testing it correctly on your box.)
How exectly did they run it?
The standard double click will give an error about "Main-Class" with that specific text when you attempt to run a jar that is not in fact an executable jar.
That error is NOT the same as the standard class not found error.

Problem in loading applet from non executable jar file

hello ,
I am new to jar concept plz help.. I am trying to call an applet from another applet through frame it is working fine but its download time is much more. now i want to store all my images , sound files and class files of other applets in a jar file and want to access these inner applets from this jar file so that it will make only one http connection with the server for this jar file only and can reduce the download time of applet.
Can anyone can give me suggestion plz..
Thanx

You have to download what you have to download. You
probably can't easily share images between 2 separate
Jar files. Unless you can expose them through the
other applet via a method that can be known once you
have the reference to the other applet.Thanx but i think i have to elaborate the problem :
my project structure is just like this ::
on the top is ::
Applet A---> from this applet i am callling Applet B & Applet C in frame
and communication is established between these 3 applets successfully .
now i have made a single non executable jar file which contains images , sound and class files of these applets .
so i am referencing images and sound files in applets through this jar.
but i wanted to load Applet B & C through this jar file only.
How can i do this ??
Thanx .. I hope now the problem is clear

[b]Simple Deploy problem- making an Executable JAR File ...PLEASE HELP [/b]

Hi all,
I Trying to deploy a simple J2SE app by making an Executable JAR File, however I don'r understand how to add a valid value to the Main Class field.
I followed the following description within Jdev, after creating a Deployment Profile:
Deploying an Executable JAR File
You can make your simple archive or J2EE Client Module into an executable JAR file that you can launch with the java command.
To deploy an executable JAR file:
1) Select and right-click the simple archive or client icon in the Navigator to display the context menu.
2) Choose Properties.
3) Click JAR Options in the tree.
4) Select Include Manifest File (META-INF/MANIFEST.MF).
5) In the Main Class field, enter the fully qualified name of the application class that is to be invoked.
7) Click OK.
8) Launch the executable JAR file from the command line:
java -jar myapp.jar
where myapp represents your JAR file name.
Like I said it's in 5) I'm doing something worng
My deploy-file (PlotPrint.deploy) looks the following:
<?xml version = '1.0' encoding = 'windows-1252'?>
<client-deployment xmlns="http://xmlns.oracle.com/jdeveloper/903/deploy/j2ee-client-jar" nselem="client-deployment" class="oracle.jdeveloper.deploy.jar.ClientProfile">
<archiveOptions>
<additionalManifests/>
<compressed>false</compressed>
<hasManifest>true</hasManifest>
<mainClass>PlotPrintClient</mainClass>
</archiveOptions>
<archiveTargetPlatform/>
<cdaSettings>
<additionalArchives/>
<afterFilters/>
<beforeFilters/>
<duringFilters/>
<selectedArchives>
<archives>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jdbc/lib/classes12.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jdbc/lib/nls_charset12.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jdev/lib/jdev-rt.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/soap/lib/soap.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/lib/xmlparserv2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jlib/javax-ssl-1_2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/jlib/jssl-1_2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/j2ee/home/lib/activation.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/j2ee/home/lib/mail.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/j2ee/home/lib/http_client.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/webservices/lib/wsdl.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/lib/xmlparserv2.jar!/"/>
<Item protocol="jar" path="file:/C:/Oracle9i_Jdev/jdevbin/lib/xmlcomp.jar!/"/>
</archives>
<selectionMode>0</selectionMode>
</selectedArchives>
</cdaSettings>
<defaultConnection class="java.lang.String"/>
<deployClientMaxHeapSize/>
<earURL path="deploy/PlotPrint.ear"/>
<enterpriseAppName/>
<jarURL path="deploy/PlotPrint.jar"/>
<profileDeps/>
<properties/>
<selectedProjectFiles>
<autoInclude>true</autoInclude>
<deploySourceAs>0</deploySourceAs>
<files class="[Ljava.net.URL;"/>
<selectionFilters/>
</selectedProjectFiles>
</client-deployment>
I using Oracle9i Jdev, but have also tried it un the new Jdev 10g version, but the same problem everytime:
Error message: Could not find the main class: program will exit.
Please help I really need this to work
Message was edited by:
MHCI
Message was edited by:
MHCI

Yes that was the problem so I have changed the element mainClass to
<mainClass>xxPlotPrint.MHCI.PlotPrintClient</mainClass>
But now another probem has occured, since I get the following error when run the jar-file (When I run the app from within Jdev there are no warnings or errors).
----Batch-file-----
@echo off
java -jar PlotPrint.jar
echo Test Plot and Print Batch-file!
pause
---- out to cmd ----
Exception in thread "Thread-0" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl
at xxPlotPrint.MHCI.NNE35_worker.run(NNE35_worker.java:42)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-2" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl
at xxPlotPrint.MHCI.OCEJobDB_worker.run(OCEJobDB_worker.java:41)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-1" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl
at xxPlotPrint.MHCI.NNE27_worker.run(NNE27_worker.java:42)
at java.lang.Thread.run(Unknown Source)
It's the same problem in all three exceptions (the exactly the same code), however I was a bit to quick this is the line (the line before I process the xml doc :-)
import org.w3c.dom.Element;
responseData = new Vector();
responseData = test_NNE35_SOAP.getXSDdoc();
Element elements = ( (org.w3c.dom.Element)responseData.elementAt(0) ); (line 42)
Please help I don't understad why I receive this exception, since I included the xmlparserv2.jar file, and don't even have a workaround :-(

Class not found error while executing jar file

I have written a java code in which i am connecting to database....when i run the class file using......java class_filename it works........
but when i run the jar file using .......java -jar jar_name ...yi gives me the error as 'Class not found'......
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Thanks and Regards,
Siddhesh

that class is part of jar file.....in classpath i have included zip files for jdbc ...to get databse connection.....and the jar being executed ................still it gives the error ClassDefnotfound which i think is due to database connection problem.....the exception is raised while.....
Class.ForName("Driver_name").newInstance();/ This driver is present in zip files that i have added in classpath....
above statement doesn,t giv error while i execute the class file............but exception while executing jar file only..
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siddhesh

Executable JAR file: Could not find the main class.

Hello,
I have a problem with making an executable JAR file.
I have written a JAVA program that consists of five different classes of which User.java is the main class and I have saved a text document with Main-Class: User and a blank line after that.
If I try:
jar cmf MainClass.txt User.jar User.class Beheerder.class Operator.class Manager.class MaakVisueelSchema.class
it makes a executable jar file which actually works! :)
But when the Operator class trys to open the MaakVisueelSchema class the screen stays blank.
I can run MaakVisueelSchema with java MaakVisueelSchema.
So I tried to make an executable JAR that consists only of MaakVisueelSchema, the same way as I did for User:
Main-Class: MaakVisueelSchema
jar cmf MainClass.txt MaakVisueelSchema.jar MaakVisueelSchema.class
Then I get the error message:
Could not find the main class. Program will exit.
from the Java Virtual Machine Launcher.
The big difference between MaakVisueelSchema and the other classes is that MaakVisueelSchema contains a PaintComponent method and an ComponentListener. Is it possible that one of those creates the error?
Can anyone help me with this problem?
Thanks in advance!
Bye!

Yes,
I tried:
jar xvf MaakVisueelSchema.jar
and it returns:
META-INF/
META-INF/MANIFEST.MF
MaakVisueelSchema.classN/G. You need to manually create a manifest file in a text editor, have it point to your main class, and enter it in your jar command as an argument.

Classpath is not working for executable jar file

I have created executable jar file using following command where manifest file contains Main-Class and Class-Path entries.
jar cvfm app.jar META-INF/* lib/* *.class
So here app.jar contains my external jar's in lib directory
but when I move app.jar to another directory, it's doesn't get my external files.
I'm not getting this problem as these jar's are in app.jar
class-path entry in manifest file:
Class-Path: lib/abc.jar lib/xyz.jar
Pls help me where it is getting fail?
Thanks in advance,
Vikas

Java doesn't handle jars within jars. Your library jars need to be outside of the executable jar as in
dist - main.jar
- lib - lib1.jar
- lib2.jar

Error trying to run an executable Jar file

Hi,
I know a million people have asked this before. In the past 5 hours I have waded thru a dozen questions-answers-FAQs that were no help. So if anyone is willing to help a stupid person her is my problem:
I developed a java program using the eclipse ide and it runs fine from within that ide.
I packaged it into a Jar file, created a manifest file per the instructions.
But when I double click on the jar file I get the following error from the Java Virtual Machine Loader;
"Could not find main class. Program will exit."
My Manifest file has the following text:
Manifest-Version: 1.0
Class-Path: swt.jar
Main-Class: .graphicalUserInterface.AppStandAlone
<blank line>
the class AppStandAlone has the method "public static void main(String[] args) "
it is in a package called "graphicalUserInterface".
Any help anyone can give me would be greatly appreciated.

Another 3 hours spent trying to run this java application in a Jar file.
I identified that I did not have all class paths specified. So I tried to enter them in the "Class-Path:" line of the manifest file. But, according to the java tutorial, the syntax in a manifest file for classpaths is a space SEPARATING each path name. I have a space IN the path name and java is not understanding the paths correctly. For instance, I have a classpath c:\Progran Files\Java\etc... and java interprets this to be a classpath c:\Progran with Files\Java\etc as the program I want to run.
I tried enclosing the paths in double quotes. Didn't work
I tried enclosing the paths in single quotes. Didn't work
I tried using a semicolon as a separator with double quotes. Didn't work
I tried using a semicolon as a separator with single quotes. Didn't work
I tried using a semicolon as a separator with no quotes. Didn't work
I removed the "Class-Path:" line from the manifest and tried adding -cp param to the java command. Example:
java -cp %classpath% -jar myapp.jar
I tried all the variations above in the -cp param. None of them worked.
The only thing that works is if I move executable jar file to the same directory as the required libraries. Then I specify a "Class-Path:" line with no spaces in the path names. Obviously this is not a permanent solution.
If anyone else has the patience to help me I would really appreciate it.

Can't Execute JAR file deployed from JDev 903

Hi Everyone:
I took the Oracle beginning Java class, and got a copy of JDeveloper 9, and started in on a project. The task was to create a small module that will allow users with no direct SQL access to change their Oracle passwords. The good news is that it runs great from within JDev; it catches exceptions cleanly, it handles multiple databases with no problems. The bad news is that I cannot get it to run from a batch file or command line (client is Windows). I have run 'setvars', I have copied the CLASSPATH from the run window in JDev, all to no avail.
I am trying to deploy the app as an executable jar file. It's not meant to be an applet, because of the security implications.
I would gladly RTFM, but the FM's that I have gloss over the deployment step in Jdev. I figure it's something obvious, but I just cannot figure it out.
Any suggestions? Help a newbie...
Thanks,
Mike

Hi Mike,
I suggest you take a look at the log window of JDev, when you've successfully run your project.
If the log window is not displayed, go to View | Log.
Cut the command line, invoking javaw.exe, and paste it into your favorite editor.
Change javaw.exe into java.exe, save your file as a bat file, go in a DOS console, and run the bat file.
Let me know if it fixes your problem.
Thanks,
- Olivier

Prbolem in executing jar file

Hi
I have written a java program that just prints "HAI"
I made that as a executable jar file
But when i am running that jar from DOS, the output is not printing
Please solve my problem
Thanks

gimbal2 wrote:
Kayaman wrote:
Well, normally if your Jar file has a manifest file with the Main-class defined, you wouldn't need to use the -cp switch, in that case
java -jar Sample.jarwould be enough. In fact the -cp flag is ignored when invoking an executable jar; the classpath MUST come from the manifest.This could be a 'cultural difference' in understanding, but it would be more accurate to say the -cp option is ignored if the -jar option is specified. This would mean that the -cp flag is not ignored in this command.
java -cp Sample.jar SampleAnd while I am here, a question for the OP that I am not clear on. The manifest.txt used, does it end with one entirely blank line? (Note that copy/pasting the manifest.txt here will not prove anything, since the forum software will chew up the blank line even if code delimiters are used.) The symptoms of the problem do sound like the JVM is detecting the manifest and successfully reading the main-class attribute, since the stacktrace specifically stated it failed to load Sample.

Cannot make executable jar file for swt application

hi to all!!! i have started learning swt library and it seems nice to me, but i have one problem, i cannot run my application. The problem is that i cannot make executable jar for it.
i'm using ecilpse_3.1.2 and have pluggined the visual editor for swt! yesterday i found one topic where was described the process of making the swt executable jar, i followed the instructions in the topic, but didn't resolve my problem, so if anybody knows how to achieve this , please help!!!!!!
the instructions in the mentioned topic are :
1. Make sure the SWT jar file is included in the Eclipse project build path
a. Download the standalone SWT jar file from eclipse.org even if you already have the ones that come with Eclipse. It is called ?swt.jar? and you will package it with the executable JAR. Make sure it is the same version of SWT that you used to make your program.
b. In Eclipse, import swt.jar via Project Properties::Java Build Path::Libraries::Add External JARs. (Make sure to include the source .zip file). Also make sure to select the swt package in the ?Order and Export? tab.
c. At this point, you should be able to compile and run your SWT application in the Eclipse SDK.
2. Do a standard Eclipse jar file export
a. Right click on the main .java project file and select ?Export??.
b. Choose ?JAR File? from the list.
c. Select the relevant packages and .classpath and .project resource files
d. Make sure ?Export generated class files and resources? is selected and browse to the location where you want the JAR file to be created.
e. Specify ?Generate the manifest file? and don?t seal the JAR or any packages. Choose the class containing the main method as the ?Main class?.
3. Change the manifest file
a. Navigate to the JAR file you created and open it with WinZip.
b. Open the MANIFEST.MF file inside and copy the contents.
c. Create a new file called ?MANIFEST.MF? and paste in the contents of the old manifest file.
d. Add the line ?Class-Path: <swt jar file path>?. For simplicity, you can just keep a copy of the swt.jar file in the same folder as the executable jar, in which case, the line is ?Class-Path: swt.jar?. Make sure there is a carriage return after the last line in the manifest file, or that line will not be parsed.
4. Replace the manifest file
a. Make sure the manifest file and the executable jar are in the same folder.
b. Open the command prompt and navigate to the containing folder.
c. Enter the command ?jar umf MANIFEST.MF <executable jar name>? to update the manifest file with the class path information.
5. Package the JAR with SWT files
a. Put the updated executable JAR file, swt.jar, and the associate DLL in the same folder. The DLL can be pulled out of swt.jar and should have a name like ?swt-win32-####.dll? on Windows.
b. The JAR file should now successfully execute. On Windows, you can usually just double click the JAR file in explorer and it will open. If that does not work, the command ?java ?jar <executable jar name>? on the command line has the same effect.
but a few steps aren't exact for me , for example : first, which jar i have to include in build path : downloaded or from plugins folder, second
i have to incude source.zip too??? but it is only in downloaded zip file which includes both swt.jar and src.zip, and finally can anyone clarify next :
"5. Package the JAR with SWT files
a. Put the updated executable JAR file, swt.jar, and the associate DLL in the same folder. The DLL can be pulled out of swt.jar and should have a name like ?swt-win32-####.dll? on Windows."
what does this mean, put these in folder or make jar from them????

wolve634 wrote:
but a few steps aren't exact for me , for example : first, which jar i have to include in build path : downloaded or from plugins folder, secondTry it both ways. If neither works, then ask again. In a suitable forum, though. An Eclipse forum or an SWT forum or something related to where you got those instructions would make a lot more sense than asking here.
i have to incude source.zip too???No, of course you don't have to distribute the source code.
a. Put the updated executable JAR file, swt.jar, and the associate DLL in the same folder. The DLL can be pulled out of swt.jar and should have a name like ?swt-win32-####.dll? on Windows."
what does this mean, put these in folder or make jar from them????It says "Put (them) in the same folder". You're asking whether that means to put them in a folder? Yes, it does.

Executable Jar file, please help!!!

I know this has been posted many times before, but Im going insane, and nothing is working, I will now have spent more time trying to make an executable jar file, than the time I spent actually writing the program, here's my problem
I got two classes, tictactoe.class, and whichBox.class, I want to make a jar file, I have tried many types of manifest files, none worked, my Main() is in tictactoe.class, if ANYONE can help me get this working I will give them dukes!!!!!

I know this has been posted many times before, but Im
going insane, and nothing is working, I will now have
spent more time trying to make an executable jar file,
than the time I spent actually writing the program,
here's my problem
I got two classes, tictactoe.class, and
whichBox.class, I want to make a jar file, I have
tried many types of manifest files, none worked, my
Main() is in tictactoe.class, if ANYONE can help me
get this working I will give them dukes!!!!!
your manifest file should look like this...
Manifest-Version: 1.0
Main-Class: tictactoeplease note there must be a line return at the end of tictactoe. so the file should have three lines.
if you have this correct the only other thing i can suggest is are you sure it is your manifest file that is being added to the jar.
your jar command should look like the following assuming the jar files is called Game, your manifest is called game.mf and both files reside in the default package.
jar -cvfm Game.jar game.mf *.class hope this helps.

Unable to create an executable jar file

Hi,
I am unable to create an executable jar file,
I am using the command as follows:
C\> jar cvfm MyJarName.jar manifest.txt Demo.class
where as Demo.class has appropriate main method; manifest.txt contains [ Main-Class: Demo ] and a new line
Please help.
thanks & regards
M K Rayapudi
Edited by: R6i on Apr 30, 2009 5:15 AM

Your jar is perfectly generated, but your machine has a problem with .jar file associations.
You have two options:
1. Play with the registry. Dangereous if you are not used to.
2. Reinstall the jre.
Just to verify my theory, open a command prompt and the command:
reg query HKCR\jarfile\shell\open\command
What does it say? I have executed your command , here is the output
HKEY_CLASSES_ROOT\jarfile\shell\open\command
(Default) REG_SZ "C:\Program Files\Java\jre6\bin\javaw.exe" -jar "%1" %*I am not getting anything from this command, can you please explain clearly.
thanks & regards
M K Rayapudi
Edited by: R6i on May 3, 2009 10:18 PM

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?

Problem in executing jar file

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