Could not find the main class - Problem with Webservice-Access

Hello Everybody,
I'm having serious Problems with accessing a WebService (Tomcat-Axis) per executable jar-File.
I constructed a simple GUI with 3 Textboxes 1 Button and 1 Resultbox.
I use eclipse so it was no Problem to simple generate the Backgroundclient by Processing the .wsdl-File of the WS.
Now I do this:
Head_tServiceLocator serviceLocator = new Head_tServiceLocator();
Head_t service = serviceLocator.getRPCCall();
RPCCallSoapBindingStub Head_t = (RPCCallSoapBindingStub) service;and use the Webservice like an Object.
All this works very well.
Now the Problem:
Head_t service = serviceLocator.getRPCCall();this Line has to throw a ServiceException.
If i add a try-catch Block to Process the Message JAVA tells me after i exported to JAR (with Manifest-stuff and so on) and double Click on the JAR the following :
Could not find the main Class - Program will exit.
And if i add a throws Declaration to the Methodheader it tells me:
Fatal Exception Occured - Program will exit
But if i Comment out that Line at least the GUI is being displayed (so it DOES find the main-Class). But then of course the Webservice won't be accessed.
All the JARs needed (axis.jar, commons-discovery.jar and so on) are in the same Directory as the Webservice-Client.jar
Please Help me.
Greets,
Zap

I am not done any typing mistake while creating the jar file i already followed the suggestion that you have mentioned but still the same error .
This is my MANIFEST.MF file created under META-INF folder
Manifest-Version: 1.0
Class-Path: qtjambi-4.4.3_01.jar qtjambi-win32-msvc2005-4.4.3_01.jar
Created-By: 1.5.0 (Sun Microsystems Inc.)
Main-Class: Ui_MainWindow
When i extracted the app.jar following this i got
1. META-INF folder inside that MAINFEST.MF file the contents i have already placed above
2. qtjambi-4.4.3_01.jar
3. qtjambi-win32-msvc2005-4.4.3_01.jar
4. Ui_MainWindow.class
Please tell me whats wrong in that i can also give you the app.jar file please let me know the email id ..

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Could not find the main class error with executable jar

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nevermind, found it.
classpath in manifest was incorrect

Problem with message: Could not find the main class Program will exit

I don't get why this isn't working. Any help is appreciated.
//Code start
public class hello{
public hello(){
public static void main( String args[] ){
System.out.println("Hello");
//Code end
I compile it as so:
javac hello.javaIt compiles fine and I now have hello.class in my current directory, but when I type the following:
java helloI get this:
Exception in thread "main" java.lang.NoClassDefFoundError: hello
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at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
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mring001 wrote:
That worked. Thank you very much!Good. You should read [_Setting the class path_|http://java.sun.com/javase/6/docs/technotes/tools/windows/classpath.html] that tells you more about what the classpath is and how to set it.

Could not find the main class (with every jar)

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Thanks in advanced

hai T.B.M ... Sorry to post here... I know that i posted my question in wrong thread..but i dont have another solution to contact with you.. I had seen your answers which are really excellent and helped to do my project..
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import java.awt.*;
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import java.util.*;
import java.awt.event.*;
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import java.io.*;
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f.setVisible(true);
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b2.addActionListener(this);
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Hello
I am trying to install openmq on vista and having problems. I've had the same problem with a nightly build of 4.3 and stable 4.2 build. The install kicks off fine until I get to the part where the install happens and then I get:
Java Virtual Machine Launcher : Could not find the main class. Program will exit
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jre 1.7.0
jdk 1.7.0
jre 1.6.0.7
jre 1.6.0.7 and jre 1.6.0.7
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Much obliged
Edited by: Alphawave on Oct 14, 2008 11:39 AM

Hi,
I've seen this error before on vista. In the past the users saw this message when they didn't have write permission on the directory they were installing to. Even with administrator privileges, they still need write permissions.
A quick test is to:
login as the user you are installing as.
cd to the directory you are installing into.
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Thanks.

Help needed with application: "could not find the main class"

I am pretty new to java and am trying to figure out applications a bit now. The one im working on does run within my editor, but when i "test" it or try to run it from within a .jar file it returns a "could not find the main class" error.
I have a code similar to this:
public class user{
public static void main(String[] args){
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Does this have to do with it? I've been trying to get this right for a couple of days now, I just wanna be able to run it (on either my pc or another) without starting the Editor.
Looking forward to receiving an answer..

It sounds like you are missing the Main-Class attribute in your manifest file. Create a file 'manifest.mf' with the following line 'Main-Class: user'
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http://java.sun.com/docs/books/tutorial/jar/basics/mod.html

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Hi,
I want replace JRE1.5-11 with JRE 1.6.
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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:
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jar cmf MainClass.txt MaakVisueelSchema.jar MaakVisueelSchema.class
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Could not find the main class. Program will exit.
from the Java Virtual Machine Launcher.
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Thanks in advance!
Bye!

Yes,
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jar xvf MaakVisueelSchema.jar
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META-INF/
META-INF/MANIFEST.MF
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Could not find the main class: SearchExcel. Program will exit. ????

sekic0429{uabudd_milou}[w10/rbssw/2.0] pwd
/tmp/MyJava/jexcelapi
sekic0429{uabudd_milou}[w10/rbssw/2.0] printenv CLASSPATH
/tmp/MyJava/excelapi:/app/jdk/1.6.0_16/jre/lib:/app/jdk/1.6.0_16/lib
sekic0429{uabudd_milou}[w10/rbssw/2.0] ls
build ExcelSearch.java index.html resources SearchExcel.java~ tutorial.html
docs ExelSearch.java~ jxl.jar SearchExcel.class src workbook.dtd
ExcelSearch.class formatworkbook.dtd jxlrwtest.xls SearchExcel.java TestSpecification.xls
sekic0429{uabudd_milou}[w10/rbssw/2.0] javac -extdirs . ExcelSearch.java
sekic0429{uabudd_milou}[w10/rbssw/2.0]
sekic0429{uabudd_milou}[w10/rbssw/2.0] java ExcelSearch
Exception in thread "main" java.lang.NoClassDefFoundError: ExcelSearch
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Could not find the main class: ExcelSearch. Program will exit.
sekic0429{uabudd_milou}[w10/rbssw/2.0] cat ExcelSearch.java
import java.io.File;
import java.io.IOException;
import java.util.Date;
import jxl.*;
import jxl.read.biff.BiffException;
public class ExcelSearch
public static void main(String[] args)
try
Workbook workbook = Workbook.getWorkbook(new File("TestSpecification.xls"));
catch (IOException e)
e.printStackTrace();
catch (BiffException e)
e.printStackTrace();
Regards Peter, hope for answer

r035198x wrote:
Where is SearchExcel.class?Excellent question, though I think I spotted a problem with the cp supplied.
Note the documentation for -cp state (in part)
For example, if directory foo contains a.jar and b.JAR, then the class path element foo/* is expanded to a A.jar:b.JAR, except that the order of jar files is unspecified.So instead of this..
java -cp /tmp/MyJava/excelapi:/app/jdk/1.6.0_16/jre/lib:/app/jdk/1.6.0_16/lib SearchExcel..try this..
java -cp /tmp/MyJava/excelapi/*:/app/jdk/1.6.0_16/jre/lib:/app/jdk/1.6.0_16/lib SearchExcelNotes:
1) Adding the JRE classes to the classpath should not be necessary, but I left the rest of the cp unaltered to highlight the one specific difference I am suggesting.
2) When posting code, code snippets, HTML/XML or input/output, please use the code tags. The code tags help retain the indentation and formatting of the sample. To use them, select the sample text and click the CODE button.
If that still fails, tell us more specifically where the SearchExcel class is by copy/pasting the output (within code tags) of the command..
prompt>jar -tvf mysearchexcel.jarWhere, of course, you replace 'mysearchexcel.jar' with the actual Jar name it is supposed to be located in.
Edit 1:
Changed JavaDocs -> documentation.
Edited by: AndrewThompson64 on Jan 11, 2010 7:12 PM

Could not find the main class. Program will exit!

I have created many Executable Jar files before, and this one I did the same. When I run the jar file, (Clicking on it) I get the "Could not find the main class. Program will exit!" error message. When I run the jar file through DOS I get this Stack trace:
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at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
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at java.security.AccessController.doPrivileged(Native Method)
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US101

There could be several reasons for getting this "Could not find main class" error message. From your stack trace it looks like the class javax/media/ControllerListener is not in your class path. Make sure your manifest file has a line like this:
Class-Path: pathToTheJarFileWithControllerListenerClass.jar otherJars.jar
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HTH,
John Bender

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Hey,
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"Could not find the main class. Program will exit."
If I compile and run the source myself it works fine, so it must be a setting in Eclipse somewhere...
It doesn't work, even when I put the class in the default package...
It must be something very stupid, but I can't seem to find out what the problem is :(

It was only the basic Hello-World-concept;
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OK, I ll try to explain it in other words:
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I d like to start it with a double click from the Win-Explorer, not from command line!
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Executable Jar: Could not find the main class. Program will exit.

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[Jar Executable] Could not find the main class. Progam will exit.

Hello,
I am a French person. Excuse me for my English who is not perfect.
I seek to create an achievable "jar". I followed the instructions given in the url http://java.developpez.com/faq/java/?page=execution#creationJar, and on the site of Sun.
I have today only one class which I posed in a specific repertory "Class".
Appli
|__Class
|__Src
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Manifest-Version: 1.0
Created-By: 1.5.0 (Sun Microsystems Inc.)
Main-Class: Commission2007
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manifest ajout�
ajout : Class/./(entr�e = 0) (sortie = 0)(0% stock�)
ajout : Class/./Commission2007.class(entr�e = 9060) (sortie = 4547)(49% compress�s)I controlled the assignment of the extension "jar" in "Working station = > Tools = > Files Option = > Files Type = > .jar Selection = > Advance =
Open = > Change = >" C:\Program Files\Java\jre1.6.0\bin\javaw.exe "- gravel bank" %1 "% *". Thus not of problem on this side there!When I double click on the file "jar" lately created, I have the error message according to: "Could not find the main class. Progam will exit. " I do not understand the reason of this error. I consulted all the subjects on the treating Net of this subject but without result. I thus call upon you.
Perhaps that the cause is in my code which however functions perfectly when I carry out it with the order: "Commission2007 java". The class "hand" is quite present to see the code below. You can find the totality of my code on the bond http://www.developpez.net/forums/showpost.php?p=1870361&postcount=74
import �
public class Commission2007 extends Frame implements ActionListener, WindowListener
     �
     // Construction de la class EdText
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     // D�finition d'une frame pour l'application et affichage de la
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}I thank you in advance for your assistance.
Cordially, Gilles.

Salut,
It has been my experience that it is never a good idea to name your .MF file anything else other than MANIFEST.MF.
Try naming your .MF file MANIFEST.MF and rebuild your JAR.
Bon chance.

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