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The solution is the organizational relationship between classes and mutual objects, including their roles, responsibilities, and collaboration methods.
"Good Object-Oriented Design Patterns" are those that can meet "respond to changes and improve reuse"
The object-oriented
Chapter 6 inheritance and object-oriented design
Many people think that inheritance is the whole of object-oriented programming. Whether this point of view is correct remains to be discussed, but the number of terms in other chapters in this book is sufficient to prove that
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
Idea: Design a table to store personnel information, define the Type field, to distinguish between teachers and students
Advantages: Simple, can deal with the future of various inquiries
Cons: Too many data redundancy fields, slow query speed
2. Common implementations Idea: Design Two tables: A storage teacher, a storage student (the most common way)
Advantages: All this, the
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 into a collaborative set of objects. Each
Reading directory:
1. Background
2. Ask yourself, does UML make sense to you? Does it help you analyze and model the system?
3. We have been separated by a gap for a long time, making OOAD inaccessible.
4. The four-color prototype fills this gap in history, so that we can see the hope of OOAD.
5. Use color Modeling on four-color prototype to enhance visual impact
6. Create a domain-independent model using four-color prototype
7. Conclusion: you can skip the specific implementation during
Labels: UML, modeling, four-color prototype, color Modeling
Reading directory:
1. Background
2. Ask yourself, does UML make sense to you? Does it help you analyze and model the system?
3. We have been separated by a gap for a long time, making OOAD inaccessible.
4. The four-color prototype fills this gap in history, so that we can see the hope of OOAD.
5. Use color Modeling on four-color prototype to enhance visual impact
6. Create a domain-independent model using four-color prototype
7.
: Design Two tables: A storage teacher, a storage student (the most common way)
Advantages: All this, the advantages of a lot of natural
Cons: Some queries are somewhat difficult to implement. (e.g.: Query for new teachers and students in the last time period and sort by time)
Object-oriented approach to impl
11 principles of object-oriented design
Single Duty principle (the Responsibility Principle , abbreviation SRP )
Open-Close principle (the Open-close Principle , abbreviated as OCP )
Liskov Replacement principle (the Liskov Substitution , hereinafter referred to as LSP )
Dependency Inversion principle (the Dependency inversion Principle , referred to as
1. Why to use C languageUntil today, although the C language is not the most used language, but C is not old, in many core system code, still running is beautifully designed C, the vast majority of embedded development core library software is developed by C, most of the standard algorithm is based on the standard C design. C language with its concise, flexible and superior performance, still in the heart of the core software designers have an unshaka
Nature of software design-vernacular object-oriented ZZDifferent people refer to different meanings when talking about Object-Oriented Programming (OOP.Some people think that any application using graphical interfacesProgramAll are objec
Different people refer to different meanings when talking about Object-Oriented Programming (OOP. Some people think that any application that uses a graphical interface is object-oriented. Someone uses it as a term to describe a special inter-process communication mechanism. Some people use this word in a deep sense. T
student and could be used to solve a multi-dimensional equation immediately. Later, structured programming was developed to split the code into multiple modules, this enhances code reusability and facilitates debugging and modification, but the structure is much more complex. The earliest programming method was process-oriented. It was very intuitive for beginners to understand quickly. Later, with the object
Coad and Yourdon continue to adopt the five levels (objects and classes, structs, attributes, services, and themes) mentioned in the object-oriented analysis phase during the design phase, which helps from analysis to design transitions. According to the object-
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
Object
In the absence of a good study of object-oriented
Design
Before the design pattern, I had a vague understanding of Java interfaces and Java Abstract classes.
When I first learned the Java language, it was hard to understand why the concept of interfaces was required. Although multi-inheritance can be imple
Before studying the design patterns of object-oriented design, I had a vague understanding of Java interfaces and Java Abstract classes.
When I first learned the Java language, it was hard to understand why the concept of interfaces was required. Although multi-inheritance can be implemented, there is only a method nam
The object-oriented design principle is the core of OOPS (object-oriented programming system, Object-Oriented Programming System) programming. However, most Java programmers pursue
describes how to implement the "open-closed" principle in the object-oriented design.
(1) interface-oriented programmingInterface-oriented programming has the following advantages:A. reduce coupling between various parts of the program and make it possible to swap program m
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