Object-oriented Java stuff
In the interview, the interviewer asks, what do you understand about object-oriented programming? I think a lot of people would recite the interview questions, object...
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Tag: Java EE
Principles and use cases for asynchronous request handling in Servlet 3.0
January 12, 2024
by 金瑋婷
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Java Web Servlet3.0 provides a detailed introduction to the principle of asynchronous request processing mechanism, and provides a use case!
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Stop coding and use the generic tree node utility class code!
January 12, 2024
by 劉怡安
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It can be seen that the department hierarchy structure in the figure above is just like a tree, with a root node and several children...
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Brief introduction to the structural design scheme of the third-party login user table
January 11, 2024
by Douglas Perez
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National two big flow entrance, we do not also think of, respectively is wechat and QQ. Therefore, in order to facilitate the acquisition of users,...
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Take an in-depth look at some of the data import solutions
January 11, 2024
by Shlok Barad
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In addition to data export, the project can also import data in batches. For example, open cards in batches through Execl spreadsheet, import user or...
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JavaWeb learning summary – file upload, download
January 11, 2024
by Kathryn Paterson-Murphy
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1. To ensure server security, upload files to a directory that cannot be accessed directly, for example, the WEB-INF directory. 2. To prevent file overwriting,...
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[JavaWeb] Rights management system
January 11, 2024
by Miss Anne Moore
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I now have a page to manage items and orders. When a user clicks on a hyperlink, the filter detects whether the user has permissions!...
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JSTL, core tag library, FN method library, FMT tag library
January 11, 2024
by Andrew Sutton
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JSTL stands for JSP Standard Tag Library. EL expressions are not perfect and need JSTL support! In JSP, we have used EL expression in front,...
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Walk you through the Stream hand in hand
January 11, 2024
by Karen Simmonds
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As you can see from the amount of code, the Stream approach is less. Some scenarios often use operations (summing/de-replicating/filtering....) Etc.), has encapsulated the API...
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Installation of JDK and configuration of environment variables
January 11, 2024
by William Ortiz
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There's really nothing to learn...
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RocketMQ cluster deployment configuration
January 11, 2024
by Jonathan Richards
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Target, using 2 machines to deploy RocketMQ multi-master multi-slave mode, asynchronous replication cluster mode. Modify it according to your situation. RocketMQ default JVM parameters except...
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Library management system [JavaWeb: deployment and development environment, solve the classification, books, front page module]
January 10, 2024
by Dr. Steven James
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Consolidate Servlet+JSP development mode, do a relatively complete small project. The project consists of two parts, foreground and background. The project can be divided into...
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Learn how the JVM goes from entry to abandonment?
January 10, 2024
by Steven Ferrell
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The JVM read it while preparing for the interview and never had time to write notes. Now to a company internship, spare time to write,...
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JSP+SSM+Mysql student achievement management system
January 10, 2024
by Kimberly Houston
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This system is based on JSP+SSM+Mysql student achievement management system. The main functions are teacher management, student management, curriculum management, student achievement management. 1. Download...
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With Optional, the code is so elegant!
January 10, 2024
by Lauren Mendoza
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With Optional, the code is so elegant! That's pretty elegant! That's the height of elegance! SAO qi is very! Pretty slutty! Super SAO gas!
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The difference between Arraylist and Vector – Java Things column
January 10, 2024
by Maria Harvey
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We've focused on ArrayLIst in the last few articles, and it's time to release this diagram. The content of this figure for us to learn...
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ArrayList basic array expansion principle – Java those things column
January 10, 2024
by Jasmine Simmons
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Again, ArrayList is a generic class, and we can write one ourselves if we like. After the column was published, the following question was asked...
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🔥 How about writing a tech blog post about my views
January 10, 2024
by Mamooty Din
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I have always advocated that you can write a technical blog to accumulate your knowledge, because there are too many knowledge points. Through your blog,...
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Spring [DAO module] is that simple
January 9, 2024
by 趙家瑋
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Spring's DAO module supports JDBC, and Spring's transaction control... Let's take a look at our native JDBC: manually go to the database driver to get...
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Time Complexity – Java things column
January 9, 2024
by 何婉婷
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In order to fully understand the internal implementation of HashMap, we still need some basic knowledge. With this basic knowledge, we can better understand HashMap....
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Java Mail sending must be configured with a timeout period
January 9, 2024
by Jared Finley
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I have an online mailing problem. Record it. I went to DB to check the recent mail delivery situation and said, "It looks quite normal,...
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Java Concurrency — ConcurrentHashMap(JDK 1.8)
January 9, 2024
by Darshit Sem
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The difference between HashMap and Hashtable is that the former is thread-safe while the latter is thread-safe. But when we need thread-safety, Hashtable is not...
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ArrayList initialization – Java stuff
January 9, 2024
by Alyssa Mendoza
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This is the first of five articles in the ArrayList section, which introduces time complexity and strongly recommends that you read them in order. The...
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What is XML?
January 9, 2024
by Jennifer Brown
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Conclusion: The two are only roughly the same in structure, there are obvious differences in essence. Let's start with what an XML declaration is. The...
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Common problems with learning WebFlux
January 9, 2024
by 唐惠雯
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The main motivation for learning WebFlux this time was sharing within the company group. I wrote a PPT, which can be obtained by replying "PPT"...
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The web’s most accessible [short link] introduction
January 9, 2024
by Prerak Ghosh
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Recently, I received a demand related to the knowledge of short links, so I went to look up the relevant information, and here I will...
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ArrayList time complexity – Java things column
January 9, 2024
by Steven Tate
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Add the element to the specified location by subscript, as you all know, we directly source. I've seen some books that say move to the...
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Arrays in Java – Java stuff
January 9, 2024
by Ms. Sara Sexton
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Equals (up) = String (up) = String (up) = String (up) = String (up) = String (up) = String (up) = String (up) = String...
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Tomcat+Servlet interview questions are here
January 9, 2024
by Leslie Robertson
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All of these points can be found in my other articles. Bio: Traditional Java I/O operation that synchronizes and blocks IO. Do this via Catalina:...
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Mybatis [Reverse engineering, Caching, proxy
January 9, 2024
by Dr. Marilyn Sutton
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By storing the data frequently queried by users in the cache (memory), users can query data from the cache instead of from disk (relational database...
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