IBM Rational Application Developer is a re-branding of IBM WebSphere Studio Application Developer. This article introduces Rational Application Developer and shows how it simplifies Java 2 Enterprise Edition (J2EE) development. It also shows how to build a Java class and a simple Struts-based J2EE application. Follow-up articles will elaborate in more detail on what is covered in this introductory article.

http://www-128.ibm.com/developerworks/rational/library/05/719_app/