Recent Posts
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Java implementation method of Bloom filter
The principle of Bloom filter is very simple: hash a string into an integer key, and then select a long bit sequence, …… -
Java circular traversal method for deleting elements in list and set sets (recommended)
Today, when I was working on a project, I needed to delete some elements in the list and set. At that time, I used the…… -
Detailed explanation and example code of java thread pool executorservice
@H_ 404_ 1@Java Thread pool executorservice @H_ 404_ 1@1. Thread pool 1.1 under what circumstances are thread pools us…… -
Java implementation of Huffman coding algorithm
Introduction to Huffman coding Huffman coding deals with the encoding pairing of characters and binary corresponding t…… -
Java QR code login process implementation code (including short address generation, including some codes)
In recent years, the use of two-dimensional code has become more and more popular. Recently, the author also encounter…… -
Insertorupdate operation in mybatis
The following code introduces the insertorupdate operation in mybatis. The specific code is as follows: The above is t…… -
Java implementation of complex binary converter function example
This paper describes the implementation of complex binary converter function in Java. Share with you for your referenc…… -
Explain the pattern class and matcher class in Java regular expressions in detail
preface This article will introduce the pattern class and matcher class in Java regular expressions. First, we need to…… -
Explain the pattern class and matcher class in Java regular expressions in detail
preface This article will introduce the pattern class and matcher class in Java regular expressions. First, we need to…… -
Java realizes sending SMS verification code using a third-party platform
A small project I did some time ago involves the problem of logging in and registering with SMS verification code. I h…… -
Wechat public account development tutorial
Introduction and content summary Several readers have complained that "Liu Feng only uses text messages as an example,…… -
Java uses regular expressions to implement string template instances in the form of ${name}
preface I believe you may have encountered this situation. We often use string templates when developing requirements …… -
Mybatis rowbounds implementation code for limiting the number of queries
For Oracle database, increase rowbounds to limit the number of queries. The default is 0 to 1000 The above is the impl…… -
Operation methods for adding and verifying signatures on Java HTTP interface
1. Business background Recently, I contacted some e-commerce businesses and found that when dealing with e-commerce bu…… -
Using zxing to generate two-dimensional code in batch in Java
Use zxing batch to generate QR code from the specified text content (link address, text, etc.) at the specified positi…… -
Three methods of Java string interception (recommended)
As we all know, Java provides many ways to intercept strings. Let's take a look at some of them. 1. Split() + regular …… -
Download pictures to simple instances of clients and servers according to the URL
1. Save to server Save to the server where the project is located according to the path. 2. Save to local Save locally…… -
Java implementation of FTP file upload and download function example code
FTP is the English abbreviation of file transfer protocol, and the Chinese abbreviation is "Text Transfer Protocol". I…… -
Understand the use of executorservice in Java multithreading
java. util. The concurrent package provides classes for multithreading operations. Executorservice and its implementat…… -
Java Web image upload and file upload examples
Image upload is essentially the same as file upload, and the image itself is also a file. File upload is to upload pic…… -
Detailed introduction to the four domain objects of JavaWeb
Java Web four domain objects 1) Attribute related methods 2) Domain object with the above attribute method The scope o…… -
Java uses a custom class as the key value instance of HashMap
This is a classic question in Java and is often asked in interviews. In fact, many books or articles have mentioned th…… -
Use of output stream outputstring() of Java IO stream
Fileoutputstream: subclass, write out the channel of data Steps: 1. Get target file 2. Create a channe…… -
Detailed explanation of socket chat program based on Java — initial design (with demo)
Write before: Maybe it's near the end of the term, and various course designs come one after another. Recently, I saw …… -
Detailed tutorial on mybatis
Jar package required by mybatis: You need to reference two jar packages, one is mybatis and the other is MySQL connect…… -
On hashcode method in Java (recommended)
The data structure of hash table must be familiar to most people, and hash table will be used in many places to improv…… -
Detailed introduction to Tomcat implementation of websocket
How Tomcat implements websocket Websocket protocol belongs to the HTML5 standard. More and more browsers have natively…… -
Basic usage of BigDecimal for addition, subtraction, multiplication and division in Java
preface As we all know, Java is in Java The API class BigDecimal provided in the math package is used to accurately ca…… -
Java string class constant pool analysis and detailed introduction to the differences between “equals” and “= =”
Similarities and differences between Java "equals" and "= =" First, briefly say "equal" and "= =" ==For basic data typ…… -
Sending mail using JavaMail based on Java
1、 Related concepts of e-mail Mail protocol. It mainly includes: SMTP protocol: Simple Mail Transfer Protocol, which …… -
Detailed steps of using JDBC to connect to MySQL database in JSP
1. First enter the name of Web project in the new project text box, and then click next. 2. Click next to continue 3. …… -
Java JNI principle detailed introduction and simple example code
Java JNI principle JNI is an important function in the Java standard platform. It makes up for the lack of Java's plat……