Problem Introduction: for example, if there are A-type and B-type nuts, you can directly use A-type screws produced by A-type nuts on a-type nuts, you can also directly use B-type screws produced according to B-type Nut standards on B-type nuts. However, because a-type nut and B-type nut have different standards, you cannot directly use B-type screws on A-type nut, and vice versa. How can we achieve this goal?
You can solve this problem by using an adapter
that uses Entryiterator traversal, and the iterator operates directly on the HASHMAP internal storage structure table. This approach enables the functionality of the view. The entire process does not require any secondary storage space.
P.s. From this point you can also see why EntrySet () is the most efficient way to traverse HashMap, because it is consistent with the way it is stored within HASHMAP.
Note: Effective Java says that the adapter dele
Copy Code code as follows:
/**
* Adapter Mode
*
* Convert the interface of a class to another interface that the customer expects, and those classes that are not compatible to work together can work together
*/
This is the original type.
Class Oldcache
{
Public Function __construct ()
{
echo "Oldcache construct}
Public function Store ($key, $value)
{
echo "Oldcache store}
Public function Remove ($key)
{
echo "Oldcache remov
From: http://www.cnblogs.com/zhenyulu/articles/39386.html
Reference: http://www.dofactory.com/Patterns/PatternAdapter.aspx
I. Adapter Mode
The adapter mode converts an interface of a class into another interface that the client expects, so that the two classes that the original interface does not match and cannot work together can work together.
Name Origin
This is like a transformer, which converts one vol
Adapter mode (Adapter pattern)——. NET design Pattern series eightTERRYLEE,2006 year FebruaryOverviewIn the software system, because of the change of the application environment, it is often necessary to put "some existing objects" in the new environment, but the interfaces required by the new environment are not satisfied by these existing objects. So how do you deal with this "migration change"? How can yo
I. Introduction
In the actual development process, due to the changes in the application environment, such as the changes in the use language), we need to implement that there is no existing object in the new environment to meet, however, such existing objects exist in other environments. So what if we call "existing objects" in the new environment? The solution to this problem is the adapter mode we will introduce in this article --In this way, exist
The adapter mode converts an interface of a class into another interface that the client expects, so that the two classes that the original interface does not match and cannot work together can work together.
Name Origin
This is like a transformer, which converts one voltage to another. The domestic electricity voltage in the United States is 110 V, while that in China is 220 V. If you want to use us appliances in China, you must have a transfor
definition: Converts the interface of a class into another interface that the customer expects. The adapter mode makes it possible for those classes that could not work together because of incompatible interfaces.
Type: class object Structure pattern
class Diagram:
In the GOF design pattern, there are two types of adapter patterns, the class adapter pattern and t
Structural patterns (structural pattern) describe how a class or object can be combined to form a larger structure. The structure pattern describes two different things: a class and an instance of a class. According to this point, the structure pattern can be divided into the structure pattern of the class and the structure pattern of the object.
Subsequent content will include the following architectural patterns: Adapter mode (
Adapter mode design ideas in life will often be applied to, such as when we are charging the phone, it is not possible to directly charge on the 220V power supply directly, but with the mobile phone charger to convert the voltage required to be able to charge the normal, otherwise it can not be completed charging, the charger has played a role in adaptation.1. Introduction to Adapter Mode1.1>, definitionThe
Today, we're going to comb the adapter pattern for Java design mode. Adapter, think of our usual use of the power adapter to know, is to put two incompatible things straightened out, can contact each other. Also in Java, is to let two need to coordinate the class, through the adapter to coordinate the line, that is,
Design Concept and Mode 2 adapter mode and thought adapter Mode1. What is the adapter mode?
The adapter mode is a transitional mode used to communicate two incompatible things and exchange information.2. Purpose of the adapter Mode
Allows an object to process multiple obje
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 "created" design pattern solves the problem of object creation, and the "structured" design pattern solves the problem of the combination of classes and objects. Today we start talking about the first design
Design Mode note Adapter mode Adapter
// Adapter mode ---- Class Object Structure Mode
/*
1: Intention:
Converts an interface of a class to another interface that the customer wants. The Adapter mode makes the original interface incompatible
Those classes that cannot work together can work together.
2: alias: Wrapper
Design Mode-adapter mode, design mode adapter Mode
In real life, we also often use adapters, which are similar to the commonly used computer adapters. You don't need to charge the adapters, but we found that the computer adapters are also qualified, first, you have to have electricity. If there is no electricity, there will be no Adapter. Second, you have to have
? Adapter mode: Transforms the interface of one class into another interface that the customer wants. The adapter mode makes it possible for classes that are not working together because of incompatible interfaces.The adapter mode has two different forms: the class Adapter mode and the object
JavaScript Design Pattern Item9 -- Adapter pattern Adapter
Adapter mode (converter surface mode) is generally used for the interface, does not match the application or the system, and the intermediate Adaptation Layer class or object needs to be introduced. The adapter mode is used to solve the problem of interface inc
compositing instead of inheritance. Some behavioral object pattern descriptions describe how a set of peers can work together to complete a task in which either object cannot be completed alone.The creation pattern consists of: 1, FactoryMethod (factory method mode), 2, abstract Factory (Factory mode), 3, Singleton (singleton mode). 4, builder (builder mode, generator mode). 5, Prototype (prototype mode).The structure mode includes : 6, Bridge (bridging mode), 7,
Java Adapter mode (Adapter Mode)Adapter mode definition: Used together two incompatible classes. It is a structural mode and requires two identities: Adaptee and Adaptor. Why do we often encounter the combination of two unrelated classes when using the adapter mode? The first solution is to modify the interfaces of the
Design mode adapter mode (Adapter)
I want to say the adapter mode, it should be more appropriate to mention the "voltage", "headset", "Charger" and "USB" examples. Just talk about your personal experience, my original mobile phone is NOKIA5730. Later did not know there is no country, but do not recommend you buy this phone, not applicable Kazakhstan. When I bough
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.