JET (Java Enabling Technology) is a development and runtime framework that allows applications to be run without change in the following modes:
Desktop (Swing)
Browser (AJAX with embedded Javascript and/or Applet)
CDC (SWT)
CLDC (MIDP)
JET uses XML descriptors to define screens, databases, security policy, etc.
JET applications are:
Secure
Robust
Scalable
J2EE compatible (connect to a J2EE server system)
Easily maintainable
JET is used for highly-sensitive e-government projects in Switzerland as well as many business applications.