High Quality Content by WIKIPEDIA articles! An Xlet is very similar to a Java applet and is originally introduced in Sun`s Java TV specification to support applications for Digital TV. Though Xlet looks superficially different from other application models in Java such as applet and MIDlet, it is actually meant to be a generalization of such models. X in Xlet means an unknown, meaning Xlet may be used in any context rather than specific to Digital TV. Accordingly Xlet has later been re-introduced as a part of Personal Basis Profile in javax.microedition.xlet package, which is slightly different from the original design in Java TV specification.