Baloon tooltips in Java: jBallon

jBallon is a new LGPL library that allows you to have balloon-style tooltips instead of the standard Java tooltips - and there´s no need to change a single line of Java code from your application. No recompilation is needed, either.
To use JBalloonToolTips in your project you have to add this line to the project's startup script:
-Xbootclasspath/p:jBalloon.jar
You can also mix standard and balloon tooltips in one app if you want.