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Advanced Core
Java™ 2 Platform,
Enterprise Edition
(J2EE™) Patterns
and Refactoring
John Crupi, Dan Malks,
and Deepak Alur
Software Services
Sun Professional Services
Sun Microsystems, Inc.
| JavaOne 2003 | Session 3235
Presentation Goal
Learn what’s new in Core J2EE™
Patterns and how to use patterns
and refactorings in building scalable
multi-tier J2EE applications
2 | JavaOne 2003 | Session 3235
Speaker’s Qualifications
• John Crupi
- Distinguished Engineer and
Chief Java Architect
• Dan Malks
- Principal Engineer
• Deepak Alur
- Senior Java Architect
• Co-authors of Core J2EE Patterns
3 | JavaOne 2003 | Session 3235
Agenda
• Introduction
• Patterns and Core J2EE Patterns
• New Core J2EE Patterns
- Presentation Tier—Dan
- Business Tier—Deepak
- Integration Tier—John
• Summary
• Q&A
4 | JavaOne 2003 | Session 3235
Introduction: Field Observations…
• Tremendous value in design “reuse”
• Patterns seem to be “sweet spot” of design
• Developers desire:
- Pattern abstractions
- Code realizations
• Bad Practices as valuable as good practices
• Refactorings provide cl