Log4Web is a J2EE (Java 2 Enterprise Edition) web application, designed to web-enable system log files that have been generated by the popular logging package Apache Log4J. Log4Web is packaged as a web archive (.war) file. It is suitable for use with any web server or application server that supports the appropriate Servlet and JSP technology. Click here for more details on the web server requirements for using Log4Web.

The web component consists of two main screens. The first screen allows the user to select a log file to view, and to select a number of filters on the messages in that file. The second screen displays the messages in a table format, with colour-coding to indicate the severity of each message. Click here for more details of the filtering options that Log4Web supports. Log4Web also implements a number of caching strategies in order to maximise its performance. Click here for details of the caching mechanisms.