An executable Jar file contains both a Swing-based editor with syntax-highlighting, online help, example generator etc. for the "httest" tool (https://sourceforge.net/projects/htt/), as well as a Java API wrapper for writing JUnit tests with "httest".
My work as a system administrator and developer includes debugging software. I scan and filter logfiles many times a day. This tool can help you to color and filter your logfiles. So you can concentrate on the interesting things to do!