interface or abstract class

Six principles of design patterns (3) -- six principles of dependency inversion and Design Patterns Definition: High-level modules should not depend on low-level modules. Both of them should depend on abstract interfaces. Abstract interfaces should

1. Understanding anonymous Inner class/* Anonymous inner class is a simplified way of writing inner classes. Premise: There is a class or interface where the class can be either a concrete class or an abstract class. Anonymous inner class format:

You ' ve probably heard of the acronym SOLID by now, which are an object oriented programming paradigm consisting of five IC (but interrelated principles) of object Oriented development.And you ' ve probably heard once or twice, the D in SOLID

Dependency Injection1. Attribute InjectionProperty injection requires that the bean provide a default constructor and provide a corresponding setter for the property that needs to be injectedMethod. Spring invokes the Bean's default constructor to

1 definitionsWhen the internal state of a state changes to allow its behavior to change, the object looks like it has changed its class2 class DiagramRole analysisState abstract status role, interface, or abstract class, responsible for state

PHP implements detailed explanation of the abstract factory mode in the design mode, and detailed description of the design mode Abstract Factory is a common software design pattern. This mode provides a unified creation interface for a product

Design Mode: Prototype Mode  Creational Model   The generation of objects consumes system resources, so how to efficiently produce, manage, and operate objects has always been a topic worth discussing. The Creational model is related to the

Java NIO Reading NotesThe role of NIO is to improve program performance. Sometimes the performance bottleneck of the program is not the CPU, but the IO. At this time, NIO will be used. The principle of NIO is to use the underlying resources of the

Design Pattern-strategy pattern, design pattern-strategy Rule ModeDefines a series of algorithms, encapsulates each algorithm, and enables them to replace each other. The rule mode allows algorithms to change independently of customers who use it.

Simple factory model -- factory method model (Introduction), factory --1. Simple factory mode (static factory)  The simple factory model does not belong to 23 standard design models The simple factory mode is a special implementation of the factory

[Java] 12: proxy mode-how to play with static proxy? What is static proxy? There is a Proxy Pattern in the 23 commonly used design patterns that are week-long ). It is defined as follows: Provides a proxy for other objects to control access to this

Transferred from: http://www.cnblogs.com/java-my-life/archive/2012/05/10/2491891.htmlIn the book "Java and Patterns" of Dr. Shanhong, this describes the strategy (strategy) Pattern:　　The policy mode belongs to the behavior pattern of the object. It

1.java Advantages and Disadvantages: pure face object, cross-platform, provide many built-in class library, support web development, have good robustness and security shortcomings: slow, cross-platform can not be as close to the operating system as

Composite definition:The object is organized in a tree structure to form a "part-whole" hierarchy, so that the client can use a single object and a composite object in a consistent manner. The Composite is easy to understand, and the Composite

I. Definition Policy patterns define a series of algorithms, encapsulate each algorithm, and make them replaceable. The rule mode allows algorithms to change independently of customers who use it. -Abstract policy role: a policy class, usually

Policy modeThe intent of the policy pattern is to encapsulate each algorithm in a separate class with a common interface for a set of algorithms, so that they can be replaced with each other. The policy pattern allows the algorithm to change without

1. Problems and modes Time: June 2014 School: Langfang normal home: Shijiazhuang: Student The final exam is approaching,Go homeThe pace is also on the agenda, bored to think about this home thing. There are two main transport modes for me to go home:

PHP policy mode definition and usage example, php policy usage example This document describes the definition and usage of PHP policy patterns. We will share this with you for your reference. The details are as follows: Overview The rule mode is the

Design Mode note-Strategy Mode VS simple factory Mode Policy mode VS simple factory Mode Strategy)It defines the algorithm family and encapsulates them separately so that they can replace each other. This pattern changes the algorithm and does not

Design Pattern thinking-Observer Pattern The observer mode defines a one-to-many dependency between objects. When the State of an object changes, all objects dependent on it are notified and updated automatically. Observer class diagram: