Rough.. Java Project Design Patterns Note----studying

Design Patterns

Design pattern: An effective idea to solve this problem.

Design Patterns: Solutions for solving specific problems that recur in a given environment.

Design Pattern Learning Overview

★ Why to learn Design patterns

1, design patterns are some of the relatively excellent solution. Very many problems are typical, representative problems, learning design patterns,

------------we don't have to solve these problems ourselves from the beginning, the equivalent of reusing them on the shoulders of giants.
2, the design pattern has become a professional people often use vocabulary, do not understand the unfavorable exchange.

3, can let you design a system more professional, so that the system has a better architecture.

★ Learn the hierarchy of design patterns

1. Basic entry level--Apply type
2, the basic mastery level--can be deformed use type
3, the real understanding and mastery of the level--thinking absorption and convergence type

Rough.. Java Project Design Patterns Note----studying