Java
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Explain the socket chat program based on Java – client (with demo)
Write before: Last weekend, I took some time to record the initial design of a simple socket chat program I wrote and …… -
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…… -
Detailed explanation and example code of obtaining file size in Java
Java get file size Today, when writing code, you need to realize the function of obtaining file size. At present, ther…… -
Maven pom. XML and settings XML explanation
pom. XML and settings xml pom. XML and setting XML, which can be said to be the two most important configuration files…… -
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…… -
Java file copy and upload operation
Using java to copy files can be used everywhere. Here is a summary of a class for your reference. There are two method…… -
Explain spring development in detail_ JDBC operation MySQL database
This article introduces spring development_ JDBC operates the MySQL database as follows: Project structure: Database t…… -
Insertorupdate operation in mybatis
The following code introduces the insertorupdate operation in mybatis. The specific code is as follows: The above is t…… -
Upload and download FTP files and folders in Java
FTP is the English abbreviation of file transfer protocol, and the Chinese abbreviation is "Text Transfer Protocol". I…… -
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…… -
Using java to implement a simple lexical analyzer example code
First, let's take a look at the code segment we want to analyze as follows: The output results are as follows: Output …… -
Java implementation of Huffman coding algorithm
Introduction to Huffman coding Huffman coding deals with the encoding pairing of characters and binary corresponding t…… -
Detailed introduction to the basic process of Java class loading
Detailed introduction to the basic process of Java class loading Basic process: The array class itself is not created …… -
Detailed explanation of author web page authorization of wechat development
In the development of wechat, there are often such needs: obtaining user avatars, binding wechat signals and sending i…… -
Understand the use of executorservice in Java multithreading
java. util. The concurrent package provides classes for multithreading operations. Executorservice and its implementat…… -
Spring mail sends mail via QQ mailbox server
Spring mail encapsulates the mail service of JavaMail, which makes the mail service easier to use. Next, take QQ mailb…… -
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…… -
Java servlet mobile app access interface (I) data encryption transmission verification
The previous essays on servlets sort out the simple use process of servlets. The next article will focus on the mobile…… -
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 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…… -
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 …… -
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. …… -
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…… -
Mybatis insert and delete batch operations
When operating the database, you often encounter batch insert and batch delete. It's better to directly execute SQL st…… -
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 …… -
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…… -
A solution to the problem of Chinese garbled code in spring MVC
Garbled code is a headache. This paper introduces a solution to the problem of garbled code in spring MVC, as follows:…… -
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…… -
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…… -
A solution to the problem of Chinese garbled code in spring MVC
Garbled code is a headache. This paper introduces a solution to the problem of garbled code in spring MVC, as follows:…… -
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 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 ……