object oriented design and patterns 2nd edition

1. Change is the natural enemy of reuse!The biggest advantage of object-oriented design is that it resists change2. Re-understanding Object-orientedUnderstanding Isolation Changes:From the macro level, the object-oriented approach

Object-Oriented design principles:Is the core of programming for Oops (object-oriented programming System, Object-oriented program design sy

5 Programming styles and the abstractions they use: Process-oriented algorithms Object-oriented classes and objects Oriented to logical goals, usually expressed in predicate calculus Rule-oriented if--then the rule A constraint-invariant

depend upon details, details should depend upon abstractions.Another expression is:to program for the interface, do not program for implementation. The English definition is:Program to a interface, not an implementation.analysis of dependency reversal principleThe dependency reversal principle was Robert C. Martin's third engineering notebook in 1996 for the C + + Reporter column, which he later joined in his 2002 classic, Agile software Development, principles,

Just like the location of Newton's three major laws in classical mechanics, the open-closed principle is the cornerstone of object-oriented reusable design (Object Oriented Design or OOD. Other

tree-like Java object to a database, and vice versa. The core of this work is how to accomplish this work with minimal performance loss. The EJB framework provides such an object persistence mechanism. We will discuss this mechanism in this article, but first of all we have a comprehensive understanding of the EJB architecture. Enterprise-Class JavaBeans (EJB) EJB technology can be defined as this: it is a

Object-oriented design principlesBorn to support maintainability multiplexing, these principles are embedded in many design patterns, which are the guiding principles that are summarized in many design scenarios, and understand

　　Why Study Design Patterns:1, more in-depth understanding of object-oriented thinking2, is conducive to the development of a strong extension of things　　What is a design pattern: a typical solution for a typical scenario that often occurs is the

"Design mode" This word almost become synonymous with software design, many people very naïve thought mastered the design model to master the software design , but in fact, if only to grasp the design mode, the software design doo

software development efficiency, improving software quality, saving development costs, and improving system maintainability. The purpose of object-oriented design reuse is to enable maintainability reuse. In the object-oriented de