Develop Reference

Dynamic reports classnotfoundexception

I have a java program that uses dynamic reports fine in netbeans, and even works in exe and jar when I first run it. However, if I share the jar/exe (I've even sent it and re-downloaded it on my own computer), I get an error java.lang.classnotfoundexception: net.sf.jasperreports.engine.jrdatasource. However, I have double checked my jars and I do have this class. What could be the source of this problem then?
Thanks
Edit: full error:
Exception in thread "main" java.lang.NoClassDefFoundError:
net/sf/jasperreports/engine/JRDataSource
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetMethodRecursive(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.validateMainClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException:
net.sf.jasperreports.engine.JRDataSource
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 7 more

if you get Caused by: java.lang.ClassNotFoundException: inside a jar file then, you need to provide the classpath arguments;
example:
java -cp my.jar -jar ExternalJarFileName.jar
you can also provide all jars use below command, only need to create a directory and put all external jars in to it and use path of directory in to below command:
java -cp my.jar;C:\externalJar\* mainpackage.MainClass

Launch4j - Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/MessagingException

I used launch4j (http://launch4j.sourceforge.net/) software to create an executable of my application created in java netbeans.
I did everything as I saw in a tutorial, just that when I run the exectutavel it creates in my application, it gives this error:
The message shown below is:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/MessagingException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.mail.MessagingException
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 6 more
Does anyone can help me solve this problem please.
I've been searching but I can not solve. I apologize for this question but am new to java.
Thank you all.
Greetings

In your launch4j configuration file add the jars like this
<classPath mainClass="your.main.class">
<cp>path/to/javamail.jar</cp>
<cp>path/to/folder/*.jar</cp> // you can also add all the jars in a folder like this
</classPath>
It will automatically bundle them.
Hope this helps
EDIT
Just went through netbeans integration with launch4j and it seems there is no way to write your on config xml file instead it prompts you in launch4J GUI for dependencies. I searched and found this Stackoverflow Post. This is what you want. Good Luck.

Add Java mail jar to classpath.
Download it from here
http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-eeplat-419426.html#javamail-1.4.7-oth-JPR

Exporting Runnable JAR in eclipse with User Libraries included

I am trying to create a runnable JAR file from a project of which I'm importing org.apache.commons.io. I tried exporting and checked the box to include all dependant libraries but I keep getting this output:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/io
/filefilter/TrueFileFilter
at tvSort.Main.main(Main.java:36)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.io.filefilter.Tr
ueFileFilter
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
Any help would be appreciated, thank you.

Did you try setting up classpath in the Manifest?
e.g. Class-Path: commons-io-xyzversion.jar
If you can please try to add this manifest entry manually by saving this in a text file and adding it via the jar tool.
Hopefully eclipse has already done this,so did you run the jar with dependencies(jars) in the same folder/path?

jdbc exception after jar creation

I've got an application, where I use a JDBC connection. When I run it from the Eclipse environment, there's no problem.
But, when I pack it into jar, the line
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
causes an exception:
java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
I put a line into manifest file, but it didn't help:
Class-Path: sqljdbc4.jar
Can anyone help?

I finally solved the problem.
I installed the jdbc driver also on the remote server, and I packed the files to an executable jar (not only jar as before).

What's wrong with this .jar file?

I'm trying to turn my JoGL project into a jar file. What am I doing wrong?
Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/opengl/GL
EventListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.media.opengl.GLEventListener
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 12 more
Could not find the main class: chartest. Program will exit.
Contents of the JAR file:
META-INF\MANIFEST.MF
gluegen-rt.jar
jogl.jar
chartest$1.class
chartest.class
gluegen-rt.dll
jogl.dll
jogl_awt.dll
jogl_cg.dll
test.png

You can check your classpath. It should include atleast
The jar file with classes you have written
Supporting jars with classes like javax.media.opengl (jogl.jar?)
Try placing all these jars in your classpath and run it.

is Jogle jar file in your classpath ?
I see you have included the jars themselves in your jar... this unfortunately wil not work out of the box.
Either get the jars out then place in your classpath (that can be part of your manifest also) or write your own classloader...
http://java.sun.com/docs/books/tutorial/deployment/jar/downman.html
This is why it worked for William and not for you... he got the jogl from somewhere else and did not use the one within your jar.

Switch to Netbeans to build your jar file. I find using other libraries inside of my projects including dll files its best to use something like Netbeans or just package it with maven.
mvn clean package
You need to be well versed in xml though if you want to use maven to package all of your jar files.