The file j9jit22.dll is the Just-in-time (JIT) compiler belonging to IBM SDK (Software Development Kit), Java 2 Technology Edition from International Business Machines Corporation. Just-in-time compiling is a method developers use to try to improve the performance of a program. Errors with this file will make a program relying on it unable to execute its code. When you see a dll file error, you should clean your registry.
Most dll file errors are related to a problem in the registry. The registry is the information booth of Windows. It contains data on where every installed file is located, along with information on how to use those files. If there is a mistake in the registry entry for a file, Windows won’t be able to run the program that file belongs to correctly. ZookaWare PC Cleaner cleans up registry mistakes. ZookaWare PC Cleaner hunts down and fixes every error in your registry to get your system humming along again, and much quicker than just in time.