head first object oriented analysis and design

The process-oriented design method emphasizes the consideration of the software's functional characteristics. process-oriented designers usually divide the system into multiple functional modules at different levels, at the same time, try to minimize the Coupling Degree between modules. The main task of object-

First of all, it must be stated that the viewpoint described in this article is only applicable to the implementation process of object-oriented systems based on the traditional waterfall model, this process includes feasibility analysis, requirement analysis, object-

MASTER: Tell me, what have you learned on the object-oriented Road? Disciples: Master, I learned that the path to object orientation can be "reused 』. MASTER: continue... Disciples: Masters, by inheritance, good things can be used again and again, soProgramThe development time will be greatly reduced, as if the bamboo is quickly truncated in the forest. MAS

mistake, you need to try to prove it. (56) If you use inheritance in object-oriented design, ask yourself two questions: (1) is the derived class A special type of the thing it inherits from? (2) is the base class part of a derived class? (57) If you find multiple inheritance relationships in an object-

mistake, you need to try to prove it. (56) If you use inheritance in object-oriented design, ask yourself two questions: (1) is the derived class A special type of the thing it inherits from? (2) is the base class part of a derived class? (57) If you find multiple inheritance relationships in an object-

only one change point (every class shocould attempt to make sure that it has only one reason to this, the death of each badly designed piece of software .) What remains unchanged in the software is changes. Poor design will cause the software to crash in changes, but good software can be easily changed. Each type has only one reason for change, which will make your software relatively simple to cope with changes. In other words, reduce the change

Object-oriented(Object Oriented, OO) is currently the focus of the computer industry, it is the mainstream software development methods in 1990s. Object-oriented concepts and applications have gone beyond programming and software

a good software design is to try to change If your software is hard to change, the problem may occur when you want to improve the design. Now let's see if several instruments can be easily changed. If a new instrument is added to an existing program, we need to add a new instrument specification and add a new query method to inventory, which does not seem easy to change! It seems that we still ha

computing problems. But the method of gradual refinement cannot provide a system strategy or method to solve a specific problem. Sometimes, there is no top-down method for some problems. Structured program analysis is an effective method for small-scale programs, but it is often ineffective to promote it to large-scale system development, developers cannot use this method to easily reuse reusable components of previous programs. The abstract mechanis

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

Some experiences in Object-Oriented Analysis and Design Analysis, Design and Implementation What I understand is the true object that exists or does not exist in real life. An obvious

method to grasp complexity is to break it into smaller parts when designing a complex software system, and then refine them separately. AlgorithmDecomposition represents each module in the system as the main step in a general process. Object-oriented decomposition is used to break down the system based on the key abstraction in the problem field. The algorithm decomposition method highlights the sorting o

Author: Anders James Synchronized from: http://www.blogjava.net/AndersLin/archive/2006/11/21/82627.html Let's take a look at booch's classic discussion of Object-Oriented Analysis and Design:Oop: Object-oriented programming is an implementation method,ProgramIs organized

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

1. Object-Oriented Analysis The object of object-oriented analysis is the objective world of knowledge and modeling. In fact, in the object