Useful Links for Sun Certified Enterprise Architect (SCEA) Exam

SunTone Architecture Methodology
The Java EE 5 Tutorial
Gang of Four Design Patterns
Core J2EE Design Patterns

Note: Design Patterns are workarounds for limitations of the languages and platform. As the platform evolved, some design patterns have become obsolete. e.g. Service Locator is no longer needed with Dependency Injection
It is important to determine which design pattern is replaced by [...]