jDictionary
Translates words and phrases from one language to another. Includes pluggable dictionaries and lexicons. [LGPL]
jGoodies
Includes jDiskReport, a free cross-platform graphical disks report utility. [Freeware]
JNP Java Nice Print
GUI report designer. [Open Source]
JPassGen
A strong password generator for secure login protection. [Open source, GPL]
JSPExecutor
JSP isn't just for the server - it can also be used as a platform-independent report description language. JSPExecutor is a command-line tool that executes JSPs. [Open Source, GPL]
jTask
GUI-based Task Scheduler for Java classes. [Free for non-commercial]
JTidy
A Java port of HTML Tidy, a HTML syntax checker and pretty printer. Like its non-Java cousin, JTidy can be used as a tool for cleaning up malformed and faulty HTML. In addition, JTidy provides a DOM interface to the document that is being processed, which effectively makes you able to use JTidy as a DOM parser for real-world HTML.
NumericalChameleon
Java 2 Application for converting numbers (radixes, phys. units, roman numbers, spoken numbers, exchange rates). [Open Source, GPL]
BigAl
Java application for calculating really BIG numbers. [Open Source, GPL]
BZip for Java
Library and command-line/GUI utility to compress and decompress BZip (.BZ2) format files. [Open Source, GPL]
Diff
Port of Diff, a program to print out differences between files, to Java. [Open Source, GPL]
DynamicPDF Merger for Java
Allows merging, stamping, appending, form filling and page placing, rotating, scaling and adding new content to existing PDF documents. [Shareware]
File Splitter
Utility with GUI for splitting files to any size you specify. [Open source]
Follow
Allows a user to monitor several log files concurrently. [Open Source, GPL]
Freewares - Java Tools and Utilities with Source Code
Small utilities and libraries such as: cascading proxy server, photo album applet, .class file editor, WAN simulator, and auto-adjusting JLabel. [Open Source, GPL]
Fsgrep
A simple Java application which allows a user to search all files in a directory structure for lines matching a given pattern. Its functionality is like a combination of the Unix 'find' and 'grep' utilities, but with more features. [Open source, GPL]
GNU JTar
Official port of GNU Tar, handles .tar files. Only has basic functionality but does extract selected files, and does have a GUI. [Open Source, GPL]
IzPress
Small Java utility to remove unnecessary space from HTML files, resulting in faster page downloads. [Open Source, Artistic License]
Jacksum
A checksum utility entirely written in Java (JAva ChecKSUM). It supports most common checksum algorithms (Adler32, BSD sum, POSIX cksum, CRC-16, CRC-32, MD2, MD5, SHA and Unix System V sum). [Open source, GPL]
JarScan
Searches through archive files for class files. [Freeware]
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