Programmer Think

ByxContainerAnnotation is a lightweight IOC container based on annotations that mimics Spring IOC. It supports constructor injection and field injection, circular dependency processing and detection, and has a highly extensible plug-in system. Project address: https://github.com/byx2000/byx-container-annotation Maven introduction <reposit ...

Concept and principle of file upload Local file copy of file upload File copy for different devices concept The essence is to transfer the files in one computer to another computer (server) through io stream according to the network protocol principle Network communication protocol ip The corresponding device can be fo ...

[design mode] observer modeprefaceThe definition of Observer mode: it refers to the one to many dependency between multiple objects. When the state of an object changes, all objects that depend on it are notified and automatically updated. This mode is sometimes called publish subscribe mode and model view mode. It is an object behavior mode.Ob ...

1. Keywords and reserved words 1.1 definition of keyword Definition: a string (word) with special meaning given by the Java language for special purposes Features: all letters in the keyword are lowercase 1.2 reserved word Java reserved word: the existing Java version has not been used, but the later version may be used as a keyword. A ...

Some thoughts on learning design patterns for the first time At present, I am reading the book "Dahua design pattern", which is cheap and easy to understand. The steps are in place That is to find that you can really improve the logic of your code, feel the convenience brought by design patterns, and understand why and what are ...

Author: Mr. SM\Source: www.cnblogs.com com/king0/p/14176609. html1, MapMap 1.1 interfaceIn Java, Map provides key value mapping. The mapping cannot contain duplicate keys, and each key can only be mapped to one value.Based on Map key value mapping, Java Util provides HashMap (the most commonly used), TreeMap, Hashtble, LinkedHashMap and other d ...

Ajax The full name of AJAX is "Asynchronous JavaScript and XML". Using Ajax, we can update the page without refresh status, and realize asynchronous submission, which improves the user experience. The essence of Ajax is to asynchronously send a request to the server by using a special object (XMLHttpRequest) provided by the brow ...

catalogue 1, What is a Servlet Manually implement Servlet program 2, Common configuration errors 3, How to locate the Servlet URL to the Servlet program for access 4, Servlet lifecycle Servlet lifecycle summary 5, Distribution processing of Servlet request Vi. realize Servlet program by inheriting HttpServlet VII. Create Servlet progra ...

1,Servlet + MVC 1. Functions of Servlet: 1. Servlet receives the user request and calls the corresponding business method 2. After the business processing is completed, the returned result is passed to Serlvet 3. The Servlet turns to the JSP according to the returned information, and the JSP renders the page 5. Give the newly rende ...

Recently, I have spare time to code words. Although the foundation of Java is really basic, it is slow and difficult for me to learn. I think I can't forget that I can't learn linguistics. I decided to write this article piecemeal, and I want to write it as easy as possible to understand, so as to exercise my ability to speak human words. Let's ...