Programmer Group

1, IOC and DI IOC (reverse control): the creation of objects is handed over to spring for configuration. DI (dependency injection): sets values to properties in a class.Relationship between IOC and DI: DI cannot exist alone and needs to be completed on the basis of IOC. 2, Scope of Bean Singleto ...

Catalog   1, Standard library 1. regexp package: regular expression 2. sync package: lock and sync 2.1 sync.Mutex mutex 2.2 sync.RWMutex read / write lock 2.3 once.Do(call) 2, Use of packages 1. Custom package 2. reference package 3. Initialization of package 1, Standard library Built i ...

I. Preface WeChat public number development (1) WeChat access certification as developer This article will implement receive messages Reply message 2, Message reception Message receiving POST and wechat authentication GET are the same interface (URL filled in by the developer) @Slf4j @RestContro ...

Several ways for Android to update UI through subthread In general, the update of UI cannot be without Handler. First, let's understand the Handler mechanism: Handler message mechanismDefinition MessageThe data unit for inter thread communication can carry the required data through message to create an object: Message.obtain(what) HandlerHandle ...

abstract API design principles: Controlling the granularity and number of API s Naming should follow the principle of simplicity, readability and uniformity. Prioritize API design, then code Say one more thing: In order to develop more efficiently and save the cost of writing documents, these popula ...

Turn from https://blog.csdn.net/chen801090/article/details/95072592 , the original text is to identify Huang Jiaju and Huang Jiaqiang. The difference is that this article changes to Wanxi and Jiang Shuying. Why do you choose them... In addition, add a recognizer to download in the link (the resource ...

44. Receiving address - display list - controller layer (a) Handling newly created exceptions nothing (b) Requests to be processed for design Request path / addresses/ Request parameter: HttpSession session Request method: GET Response result: jsonresult < list < address > > (c) P ...

Article directory SlidingPanelLayout Application scenario Commonly used API Usage mode Source code analysis summary SlidingPanelLayout Application scenario SlidingPaneLayout is a layout that Android launched in android-support-v4.jar to support sliding test panel. For example: headline detail ...

Starting with business applications, this paper abstracts a floating window tool class from scratch that can be used to display floating windows on any business interface.It can manage multiple floating windows at the same time, and floating windows can respond to touch events, can be dragged, and have side animations. The sample code is writt ...

Dependency injection in spring IOC role: reduce the coupling between programs (dependency) Dependency management: to be maintained by spring (objects of other classes are needed in the current class, provided by spring, we only need to explain in the configuration file) Dependency maintenance: depende ...