interface or abstract class

Sorting is common during programming. net is the most common sorting of the generic List . If T is a simple sorting of data types, you can directly call the Sort () method of the List, but what if the objects to be sorted are complicated? We know

First, IntroductionFrom today onwards we begin to talk about "structural" design patterns, "structural" design patterns are as follows: Adapter mode, bridge mode, decorative mode, combination mode, appearance mode, enjoy meta-mode, proxy mode. The

In the Java class system, there are two more special abstract bodies-abstract classes and interfaces. Abstract bodies cannot have specific objects (and interfaces are not even classes), but they are two very important concepts in the Java design

First, Spring introduction1.Spring simplifies Java developmentThe Spring framework is an application framework that is generally semi-finished, and we can focus on the business logic without having to implement the architecture, infrastructure, and

1. Conceptual policy patterns define a series of algorithms, encapsulate each algorithm, and enable them to replace each other. The rule mode allows algorithms to change independently of customers who use it. Ii. Composition of policy Modes 1)

Define: define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.I. Strategy Mode The purpose of the rule mode is to encapsulate each algorithm into

1. Explain interpreter mode 1.1 interpreter mode definition Given a language, it defines a representation of its syntax and an interpreter that uses this representation to interpret sentences in the language.1.2 Main Points of interpreter

In an object-oriented system, various functions of the system are completed by collaboration of many different objects. In this case, it is not that important for system designers to implement their own internal objects. The collaboration

As a B2C pet online store, petshop needs to fully consider the visitor's user experience. If the response of the Web server is not timely due to a large amount of data, and the page and query data are delayed, this will damage the customer's mood to

Reading this book makes it easy to understand and understand, so that you can quickly understand the design model. It is indeed a good book. This allows you to inadvertently understand and deepen Oo, as well as the advantages of the design pattern.

ArticleDirectory Source code Source code Dr. Yan Hong's book "Java and patterns" describes the strategy pattern in this way: The rule mode is the behavior mode of the object. Intended for a groupAlgorithm, Encapsulate each

Single Responsibility Principle SRP: single Responsibility PrincipleOCP: Open-Close PrincipleLiskov replacement principle LSP: liskov substitution principleDependency inversion principle dip: dependency invertion PrincipleInterface isolation

1.Single Responsibility Principle (SRP) The "single responsibility model" literally means that the functions of a class should be "single" or specific, and many or unrelated functions cannot be arbitrarily written into a class, its accurate

------- Android training, Java training, and hope to communicate with you! -------- Object-oriented 1. Definition: Object-oriented is relative to process-oriented Object-oriented and process-oriented thinking 2. Differences: Object-oriented: Is to

Three basic elements of object-oriented architecture: encapsulation, inheritance, and Polymorphism Five basic object-oriented design principles: Single-Resposibility Principle) Its core idea is: A class. It is best to do only one thing and only one

I. Introduction The State mode described in the previous topic is the abstraction of the state of an object. The policy mode described in this article is the abstraction of the policy, which means the method, this is the abstract of the method. The

One of my friends is engaged in stockade products. I have a factory myself. I made money on clothing some time ago and made clothes. Now I am making money on mobile phones and mobile phones. This guy is very smart. He just changed his product, and

Contents of strategy pattern: Concept; composition; Application Scenario; meaning; implementation; writing steps; advantages and disadvantages; simple implementation. Concept: The Strategy Pattern Defines a family of algorithms, encapsulates each

1. interface is not just an extremely abstract class, because it allows people to create a class that can be transformed up to multiple base types to implement a class similar to C ++Multiple inheritance variants. 2. Like a class, you can add a

What is the difference between interfaces and classes that are often used in our daily development? What are the pros and cons? The following article will be introduced to you about. NET interface and class differences in the relevant information,