(This book is a guide for Sun Enterprise J2EE Architect Certification Examination (SCEA). As one of the series of books planned by Sun Enterprise Certification, it introduces the contents involved in the examination in a targeted way, mainly including the overview of system framework and J2EE technology, the documentation of system framework, design mode, system security, and the internationalization and localization of the system. In addition, it also provides some background information and skills related to the examination.)