I am using this command to run my jar file
java -cp otpreq.jar com.otp.req.SendRequest
and its giving error-:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/httpclient/methods/RequestEntity
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: org.apache.commons.httpclient.methods.RequestEntity
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 7 more
Why this error is coming I can't figure out .
I checked the Library and org/apache/commons/httpclient/methods/RequestEntity is a Interface.
Assuming you have the http-client.jar:
java -cp otpreq.jar:http-client.jar com.otp.req.SendRequest
If O.S is windows, replace : by ;
Note: the newest httpclient is not located at apache commons, but at apache http components
You have to include all the supporting jars in class path (command line itself).
Or bind all your supporting jars inside otpreq.jar.
Either one of these will solve this issue.
Related
I've created my own jar file which includes javamail-1.4.5 lib. and when I run a batch file that starts the main class I got this error
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/Store
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetMethodRecursive(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.validateMainClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.mail.Store
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 7 more
Press any key to continue . . .
I'm using the following query in batch file
java -cp ../libs/myLib.jar main.Main
The strange thing is that if I run my main class via eclipse I haven't errors.
Can someone help me about why is this happening and what I have to do to solve it?
Fix: java -cp ../libs/mail.jar;../libs/myLib.jar main.Main
Using Eclipse, I am modifying a Java project we have been using for years. a specific class method is typically executed by sending a message through IBM WebSphere MQ. However, I now have a need to develop some new functionality and I need to be able to test it out side the MQ world.
I am able to successfully debug the application in Eclipse, but if I attempt to execute the jar file from a command prompt I receive the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: XMLBuilder/Node
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: XMLBuilder.Node
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
My build is done using an ant script. This does not include a Class-Path attribute when creating the manifest.
The XMLBuilder.jar file is included in the target jar. Running jar -tf file.jar shows
META-INF/)
META-INF/MANIFEST.MF)
... Omitted for Brevity ...
XMLBuilder.jar
What might I be missing?
Thank you
I forked one project from github and when i want to run it gives error. I added org.json jar file to jdk\lib and also set the Path variable to it. I compiled code but it got no errors but when i run it i get exception as follows : (and I am running it using command prompt)
Error: A JNI error has occurred, please check your installation and
try again Exception in thread "main" java.lang.NoClassDefFoundError:
org/json/JSONExceptio n
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:
org.json.JSONException
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
Add required jar to classpath like this:
For *nix-like systems:
export CLASSPATH=<path-to-app>/myapp.jar:<path-to-app>/lib/json.jar:.
java MyApp
For Windows:
set CLASSPATH=<path-to-app>/myapp.jar;<path-to-app>/lib/json.jar;.
java MyApp
...or via manifest:
Manifest-Version: 1.0
Main-Class: MyApp
Class-Path: /lib/json.jar
As the title says, I'm trying to run a class in Command Prompt which uses the Apache POI library but when I run this command:
java -cp C:\Users\rperera\IdeaProjects\LinkingNames\libs; HyperlinkWriter
I get this error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/CreationHelper
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: org.apache.poi.ss.usermodel.CreationHelper
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
the libs folder contains the entire POI folder that's zipped up when downloaded so I'm not sure why it's throwing this error. I also tested this with IntelliJ and it ran fine. I know that the way Command Prompt and IntelliJ handles libraries is different but I'm not sure why this is happening.
I would appreciate any help! Thanks!
You need to actually compile the jar with the original .java files and the specified POI jars.
javac -cp \path_to_jars \path_to_java_files
and then
java MyProject
I found the answer from a previous answer of StackOverflow. I had to add a '*' to the end, and a '.' after the semicolon. So with my example, in terms of compiling, I had to do:
javac -cp C:\Users\rperera\IdeaProjects\LinkingNames\libs\*;. C:\Users\rperera\IdeaProjects\LinkingNames\src\HyperlinkWriter.java
and then to run it (Credit to #andrewdleach), I just did:
java HyperlinkWriter
I use launch4j to convert jar file to the exe file in Windows XP.
After I build wrapper, I go to test the wrapper.
However, it shows ""Error : A JNI error has occurred ,please check your installation and try again" and "A Java Exception has occured".
Below is the errors:
Exception in thread "main" java.lang.NoClassDefFoundError: org/jdesktop/swingx/JXDatePicker
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: org.jdesktop.swingx.JXDatePicker
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
What does the errors say? How should I do?
You need to add a jar that contains the class
JXDatePicker
This is where you can get it from http://www.java2s.com/Code/Jar/s/Downloadswingx094jar.html
Add it in the libraries, and link the path..It must not give this error.