Apache Tika parent
· Apache Tika is a toolkit for detecting and extracting metadata and
structured text content from various documents using existing parser
libraries.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window tika-parent-1.0.18.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.