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When we use the design patterns?

We must use the design patterns during the analysis and requirement phase of SDLC(Software Development Life Cycle).
Design patterns ease the analysis and requirement phase of SDLC by providing information based on prior hands-on experiences.
Types of design patterns
Basically, design patterns are categorized into two parts:
    Core java (or JavaSE) Design Patterns.
  •         Creational Design Pattern
  •         Structural Design Pattern
  •         Behavioral Design Pattern
    JavaEE (J2EE) Design Patterns.
  •         Presentation Layer Design Pattern
  •         Business Layer Design Pattern
  •         Data Layer Design Pattern

asked Oct 2, 2013 in Java Design Patterns by rajesh
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