public abstract class

First, let's look at the map schema.As shown above:A map is a mapping interface in which the content stored in a map is a key-value pair (key-value).Abstractmap is an abstract class that inherits from the map and implements most of the APIs in the

Objective In the last project there are a lot of many a lot of recyclerview, and then I need to write a lot of many many a lot of adapter and viewholder--is no problem, but there are a lot of duplicate code that can not endure! Every adapter and

Bridge definition: The separation of abstraction and behavior, independent, but dynamic combination. Why Use Bridge mode Typically, when an abstract class or interface has more than one specific implementation (concrete subclass), these concrete

Profile Design pattern is an art, if you really understand the art, you will find that the world will become more beautiful. Defined Defines an interface for creating an object, letting its subclasses decide which class to instantiate Working

Intermediary mode Object-oriented design encourages the distribution of behavior across objects, which can cause many connections between objects. In the worst case, each object needs to know all the other objects. While splitting a system into

Data | structure | Array I have not seen the data structures in other languages, but I think Java implementations are ingenious--with classes and objects. An array of tables, the idea is very simple is to define a class to store a set of data, I

Java interceptors, filters, listeners I. Understanding of STRUTS2 interceptors 1. The Struts2 interceptor is a method of accessing an action or action, which intercepts before or after the field, and the Struts2 interceptor is pluggable and an

With the micro-service architecture being advertised in full swing, some concepts have been pushed in front of us (accept it or not), in fact most of the concepts have been there before, but rarely mentioned so often (now seem to be embarrassed to

Let's take a look at the definition of a combination pattern: " group objects into a tree structure to represent a ' partial-whole ' hierarchy." Combined mode enables users to have consistency in the use of individual objects and grouped objects.

The abstract abstract class and function are implemented in this paper, and its function is to compute the area of triangles and circles. Abstract-oriented programming means that when designing an important class, the class is not oriented to a

First, what is the dependency inversion principle A statement:Abstraction should not depend on detail; the details should depend on abstraction. Another statement:To program for an interface, do not program for implementation. Programming for

Factory Method Mode English name Factory Method Pattern definition Defines an interface for creating objects, but subclasses decide which class to instantiate, and the factory method pattern allows the class to defer instantiation to

Decorator Mode (decorator pattern): dynamically attaches responsibility to an object. To extend functionality, adorners provide a more flexible alternative than inheritance. How to use: 1. First create the component (Component) parent class , all

In the previous introduction we have mentioned that the Modelmetadata object representing the model metadata is ultimately provided through a component named Modelmetadataprovider. Next we focus on the model metadata delivery mechanism based on

We have divided the entire asp.net MVC framework into several subsystems, then the subsystem that activates the target controller object for the request context is our Controller activation system. Before formally discussing how the controller

The execution of the action method has two basic forms, that is, synchronous execution and asynchronous execution, and in the entire system of ASP.NETMVC involves a lot of synchronous/asynchronous execution, although in the previous corresponding

Reference Documentation: 1. Design mode-the basis of reusable object-oriented software 2.http://blog.csdn.net/zhshulin/article/details/38708351 (design mode-observer mode (OBSERVER)) Observer Mode (OBSERVER) (behavior mode) Detailed knowledge of

Reference Documentation: 1. Design mode-the basis of reusable object-oriented software 2.http://blog.csdn.net/hguisu/article/details/7554612 (design mode (15) Mediator mode Mediator (object behavior type)) Mediator Mode (mediator) (object behavior

/* Decorative mode is one of the structural design patterns that dynamically extends the functionality of an object without changing the class file and using inheritance, and is one of the alternatives to inheritance. It wraps the real object by

1. Database Connection PoolPackage org.dave.common.database;Import java.sql.Connection;Import java.sql.SQLException;Import Java.util.ResourceBundle;Import Org.slf4j.Logger;Import Org.slf4j.LoggerFactory;Import Com.jolbox.bonecp.BoneCP;Import