The j9hook22.dll file is part of the IBM SDK (Software Development Kit), Java 2 Technology Edition from International Business Machines Corporation. Because this file is part of a development kit, it is possible that it may also be included in the final product that a person using this version of Java produces. This file might be a crucial element of a program you are running, and an error with this file may disable that program. When you get a dll file error, you should clean your registry.
The registry is a database that tracks all the files installed on Windows. When you run a program, Windows consults the registry to find out what files belong to that program. The registry tells Windows how to locate and run those files. A mistake in the registry can disable a program. ZookaWare PC Cleaner removes registry mistakes. ZookaWare PC Cleaner scans your registry for errors and fixes them. When you see a dll file error, clean your registry with ZookaWare PC Cleaner and get back in action.