If you are running a Java application and receiving an java.lang.ClassNotFoundException error, it is most likely that your application requires a 3rd party JAR file. How can you find the required JAR file name contains the missing class? And where you should go to download the required JAR file?

jar.fyicenter.com provides you detailed information on many commonly used 3rd party JAR files. You can use the search function to find the right JAR file name by entering the missing class name. jar.fyicenter.com also provides you information on how to download JAR files.

If you are having trouble finding and downloading a certain version of JAR file, you can leave a message in the comment area. We will be happy to help you.