Java
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Reason for using 31 coefficient when defining hashcode
Hash calculation is to calculate which element of the array the element should be placed in. Exactly which linked list…… -
Jstack and thread dump instance parsing
Jstack definition: Jstack is a stack tracing tool that comes with the Java virtual machine. Jstack is used to generate…… -
Simple example of Java annotation processor
If there is no method and work to read annotations, annotations will not be more useful than annotations. An important…… -
Java sends an instance of HTTP and HTTPS requests
HTTP request: If you need to turn down yourself in JSON format, n postures on Du Niang HTTPS request: 1. I won't intro…… -
Java is a method to count the words that appear most frequently in English sentences and calculate the number of occurrences
This paper gives an example of how Java counts the words that appear most frequently in English sentences and calculat…… -
Simple code example of closure in Java
1、 Definition of closure. Many different people have defined closures. Here are some. # is a function that references…… -
Detailed explanation of dbutils toolkit for java learning notes
Dbutils Toolkit I introduce Dbutils is an open source database tool class of Apache organization. II Use steps ①. Crea…… -
Java student information management system design (2)
The student information of this example is added to the transaction entering the database (the transaction can be comm…… -
Java development of employment information management system
This example shares the development case of Java employment information management platform for your reference. The sp…… -
Java language dictionary sorting algorithm analysis and code example
Dictionary ordering is to produce all permutations one by one according to the idea of dictionary sorting. In mathemat…… -
Encapsulation operation example of HTTP tool class implemented in Java
This paper describes the encapsulation operation of HTTP tool class implemented by Java. Share with you for your refer…… -
Spring boot integration Shiro detailed tutorial (summary)
When we develop, we sometimes need to convert the traditional spring Shiro into a spring boot project or integrate it …… -
Java source code reading of Java lang.Object
Object is the parent class of all classes. Any class inherits object by default. What methods does the object class im…… -
On the basis of using java properties class
The properties class inherits from hashtable and is usually used in combination with IO streams. Its most prominent fe…… -
Explain in detail how flyway is used in spring boot to manage database versions
If you have not read the above content, you can read it if you are interested. In the article "using jdbctemplate" abo…… -
Redis cache instance parsing in Java Web
Go directly to the topic: 1： Serviceimpl definition: 2： Add cache out (usually written in the service layer): Logic:…… -
Jfinal speed development framework usage notes sharing
Record the first use of jfinal, from simple framework construction to addition, deletion, modification and query, from…… -
Course design of C language library management system
This is my work of C language course design at the beginning of the second semester of freshman year. Hei hei, I thoug…… -
Python Programming randomly generates multiple ellipse instance codes
Ellipse Demo: Code example: summary The above is all about the random generation of multiple ellipse instance codes by…… -
Spring boot integrates PageHelper (two methods)
See PageHelper spring boot, which is very convenient to use. For more pagehelpers, click https://github.com/pagehelper…… -
Detailed explanation of the correctness of spring loop dependency and the sequential relationship of bean injection
1、 Preface @ h_ 404_ 6@ We know that spring can be lazy loaded, that is, it instantiates beans when they are really u…… -
Solution to the invalid problem of character encoding filter based on tomcat8
When colleagues encounter coding problems, they want to make a character coding filter to solve the whole station. The…… -
Performance test and result analysis of parallel stream in Java 8
Test 1 Number of parallelstream threads The default is runtime getRuntime(). Availableprocessors () - 1, here is 7 Ope…… -
Examples of using itextpdf to operate pdf
Introducing jars using maven Create exporttopdf tool class The above example of using itextpdf to operate PDF is all t…… -
Java simulation poker shuffle method example of generating 52 Poker
This paper describes the method of generating 52 poker cards by simulating poker shuffling in Java. Share with you for…… -
Producer consumer model based on Java (detailed analysis)
Producer consumer mode is the most common mode in multithreading: producer threads (one or more) generate bread and pu…… -
Implementation of library management system with C language
So far, I have studied C language with the progress of the school for about half a year. I only learned the pointer in…… -
Java classloader mechanism usage code analysis
For java development, the mechanism of classloader must be familiar with the basic knowledge. This paper makes a brief…… -
Spring boot starter web configuration file tutorial for spring boot development
In this article, I will continue to introduce the configuration of the springboot configuration file and how to use th…… -
Introduction to the difference between printstream and printwriter
The APIs of printstream and printwriter are almost the same, both of which can output various forms of data, and the c…… -
Selenium + java crack extreme sliding verification code example code
abstract The principle of picture confusion of verification code material is analyzed, and selenium is used to simulat…… -
Java programming uses UDP to establish a code example of group chat system
Introduction to related Java classes DatagramSocket public class DatagramSocket extends Object This class represents t……