The file j9hookable23.dll is a link library for hookable components in the IBM SDK (Software Development Kit), Java 2 Technology Edition from International Business Machines Corporation. Hookable components are pieces of code that can be called by the program to run at any time. This file manages the access to those pieces of code. An error with this file may not immediately disable your program, but you will want to fix it as quickly as possible. Any time you get a dll file error, you should start by cleaning your registry.
The registry is a database at the heart of Windows that tracks all the programs installed on your computer. When you run a program, the registry tells Windows where to find the files it needs for the program and how to run those files. A mistake in the registry means that Windows cannot use the files, breaking your program. ZookaWare PC Cleaner cleans up those mistakes. ZookaWare PC Cleaner hunts down and fixes every error in your registry, getting your system running smoothly again.