Open Source Java File Managers

Data Crow allows you to use the standard movie & video (divx, xvid, DVD, Blu-ray, etc), book (and eBooks), images, board games, comic books, games & software, music (mp3 and other music files) cataloguing modules. Besides these modules, which you can change to fit your requirements, you can create new modules (want to catalogue your stamps, equipment, or anything else?). The GUI is skinnable. Reporting (using JasperReports and their community edition JasperSoft Developer Studio ), loan administration, item importing & exporting, backup & restore and many other optional features are waiting for you.

FileBot is the ultimate tool for renaming your movies, tv shows or anime and downloading subtitles. It's smart, streamlined for simplicity and just works. FileBot supports Windows, Linux and Mac, plus there's a full-featured command-line interface for all sorts of automation.

Easy-to-use multi-platform disk cataloguing program supporting local or removable media - drives and folders. Uses XML files as a data storage. It was originally created in 2010 to catalogue software compilations (also called freeware compilations) and CDs distributed with computer magazines. It was later improved to support any kind of disk and folder. It can be used to catalogue fragile disks like CDs, floppies, external hard drives, usb sticks, memory cards which are easy to damage. Cataloguing enables user to check what they contain without putting them physically into drive and avoid a possibility of a mechanical damage. Download package consists of a jar file and a Eclipse project with a full source code. No installation is required. You can copy this program anywhere or transfer it to another computer. Setting unique volume label to a drive before cataloguing is recommended. See blog or homepage for news and changelog. This program requires JRE 8 or newer.

Do you have lots of files? I do, particularly image files. There are lots of duplicates and I want to extract a unique set from the larger set. That is what dupless does. Written in Java, using sqlite, it is some simple code that solves the duplicate file problem. All of the code is contained in the .jar file, both source and binary. Currently it writes scripts for use on Linux or Windows. See the Wiki or the README.txt in the .jar file for more information.