Java
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Analysis and resolution of @ postconstruct exceptions executed many times in spring timing tasks
discover problems A function has just been modified in the project recently. The code is preparing for verification. S…… -
Spring boot advanced tutorial: using redis to realize session sharing
Redis is a message caching middleware and a key value storage system with rich features. Spring boot provides automati…… -
Detailed explanation of spring boot construction framework
What spring boot? Spring boot is a new framework provided by pivot team. It is designed to simplify the initial constr…… -
Java programming exception handling best practices [recommended]
Exception handling in Java is not a simple topic. It's hard for beginners to understand, and even experienced develope…… -
java. Solution to lang.exceptionininitializererror exception
Today, in the process of development, I encountered Java Lang. exceptionininitializererror exception. Baidu checked it…… -
Implementation of red black tree with treemap and TreeSet in Java
The implementation of treemap is a red black tree data structure, that is, a self balanced sorting binary tree, which …… -
Java file operation tool class fileutil instance [file addition, deletion, modification, copy, etc.]
This article describes the java file manipulation tool class fileutil. Share with you for your reference, as follows: …… -
Explain spring boot integration JMS (ActiveMQ Implementation)
This article introduces the integration of spring boot with JMS (ActiveMQ Implementation). I will share it with you an…… -
Resourcesutil instance of the tool class for reading resource files implemented in Java [contents that can dynamically change values]
This article describes the Java implementation of the resource file reading tool class resourcesutil. Share with you f…… -
Java exception exit condition judgment example code
Whether functional code or algorithmic code, the program is a collection of a series of processes Since it is a proces…… -
Implementation method of file upload function in spring MVC environment
preface In the actual development process, especially in the development of web projects, the functions of file upload…… -
Spring boot advanced tutorial spring boot connecting to MySQL database
Spring boot can greatly simplify the persistence task without writing SQL statements. In the previous chapter "spring …… -
On the meaning of < E > and < T > in Java API
Looking at the code of a set today, I found the difference in the use of generics, collection < E >, list < E…… -
Implementation method of data transmission at front and back ends of spring MVC
This article mainly introduces how to transfer data at the front and back ends in spring MVC. The details are as follo…… -
Java gets instances a few days ago, months ago, and years ago
Examples are as follows: Call example: The above examples a few days ago, a few months ago and a few years ago are all…… -
Java collection inheritance diagram sharing
Object oriented languages embody things in the form of objects. Therefore, in order to facilitate the operation of mul…… -
Method of batch importing excel table data into database with Java
This paper describes the method of batch importing excel table data into database by Java. Share with you for your ref…… -
Detailed explanation of Java Fundamentals (generics, collection, IO, reflection)
I plan to look at some parts of the Java foundation again and consolidate them. I will share some notes of learning ag…… -
Analysis and resolution of @ postconstruct exceptions executed many times in spring timing tasks
discover problems A function has just been modified in the project recently. The code is preparing for verification. S…… -
Analysis of implementation method of Java RSA encryption and decryption
This paper describes the implementation method of Java RSA encryption and decryption. Share with you for your referenc…… -
Detailed explanation of the life cycle of Java threads
Detailed explanation of the life cycle of Java threads For multithreaded programming, understanding the life cycle of …… -
5 code examples of concurrent processing skills
In this paper, the author summarizes five techniques for dealing with concurrent programs, and gives code examples to …… -
JDK1. 6 collection framework bug 6260652 analysis
Recently I was looking at the source code of JDK: copyonwritearraylist Java and ArrayList Java, the constructor of the…… -
How to use weakhashmap
How to use weakhashmap preface: when learning weakhashmap, I learned that if the key in the map is only referenced b…… -
Function example of exporting objects using Excel tool class in Java
This paper describes the function of exporting objects using Excel tool class in Java. Share with you for your referen…… -
Login and registration based on struts 2 and Hibernate
This example shares the login and registration functions of struts 2 and hibernate for your reference. The specific co…… -
Java improve the seventh class loader analysis
Today, we will learn about class loaders. Class loaders actually have a lot to do with the JVM. This article only brie…… -
Java super simple crawler example explanation
Crawl the data of the whole page and effectively extract information. If there are comments, there will be no nonsense…… -
Spring boot packaging war jar deployment Tomcat
summary 1. Spring boot aggregation project packaging War deployment Tomcat 2. Spring boot packages jar and runs it dir…… -
Code sharing of several loop examples in Java programming
About the content of Java loop, it is still commonly used in programming. Let's share some sample code of loop for pra…… -
Java uses the RandomAccessFile class to read and write file instance code based on pointers
The Java API provides a class that implements random access to files based on pointer operation. This class is the Ran…… -
Export the jar package that Maven project depends on (Graphic tutorial)
Note that the MVN command is an environment variable that needs to be configured for Maven 1、 Export to custom direct……