Downloading Jar Class Finder 1.3 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software lies within System Tools, more precisely File Managers. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free software for Mac is Jun Xiao.
From the developer:
Jar Class Finder is a simple Java application designed to help you find a specified jar file/class file located on your disk. The program comes with a search tool that lets you identify the jar files/class files stored on your computer. Jar Class Finder is written in the Java programming language and supports multiple platforms, including Mac OS X.
You may want to check out more Mac applications, such as Find.Exchange, Findings or Jar Explorer, which might be similar to Jar Class Finder.