Android (f/w 2.1+) on screen keyboard for multiple languages
Kafka Web UI
Jexer - Java Text User Interface Library
A syntax highlighting, code folding text component written in Swing
Java Swing Time Selection textfield
Java Redis Client GUI Tool
Java Swing Look and Feel for integration with the KDE Oxygen theme.
Pluggable data administration UI interface for Java web applications
a text chooser component for java.
Bitcoin GUI in Java