Q&A
| Q1: | What are the main tiers of the J2EE architecture? |
| A1: | The J2EE architecture consists of four tiers: the client tier, presentation tier, business logic tier, and the EIS tier. |
| Q2: | Why should I use design patterns? |
| A2: | Design patterns are reusable artifacts, and proven solutions that can be directly applied to solve certain problems. Design patterns are gained by experience and documented for use by architects and designers of enterprise applications. |
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