Java
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Using java to realize serial communication
1. Introduction The serial communication program implemented in Java supports the sending and receiving of hexadecimal…… -
JDBC type data types commonly used by mybatis
Mybatis passes the contained JDBC type Javatype and JDBC type correspondence and crud examples in mybatis Corresponden…… -
Characteristics and advantages of mybaits
What is mybatis and what are its characteristics? Let's introduce the concept and characteristics of mybatis. Advantag…… -
Java servlet mobile app access interface (III) Gaode map cloud storage and retrieval
This essay about Gaode map will be a little more, 1、 Business description There are two types of members in the corre…… -
Icepdf watermark removal method (recommended)
When using icepdf with font rack package to convert PDF to picture, there will be an official watermark. The watermark…… -
Several methods of two-dimensional code generation in Java (recommended)
Several methods of 2D code generation in Java are as follows: 1: Using swetakeqrcode to generate QR code in Java proje…… -
Interpretation of integer method for Java source code parsing
Interpretation of tounsignedstring method We can see that there is such a method in integer to convert int to unsigned…… -
Implementation of bounded cache in Java Concurrent Programming
Implementation of bounded cache in Java Concurrent Programming 1. Base class of bounded cache 2. Determine the precond…… -
Use case analysis of spring MVC mybatis multi data source
The project needs to obtain data from other websites because it is a temporary demand. I didn't expect to need multipl…… -
Java online book Mall (3) book module
This example shares the book module code of java online book Mall for your reference. The specific contents are as fol…… -
Java method for deleting all contents under the specified folder (including this folder)
As follows: The above Java method to delete all the contents under the specified folder (including this folder) is all…… -
Use calendar in Java to calculate the number of days and weeks between two dates
preface What exactly is a calendar? The Chinese translation is the calendar, then we can immediately think that there …… -
Detailed explanation of Java executorservice usage
The following example mainly discusses two problems: problem 1 The thread pool has a fixed size, which is assumed to b…… -
Jdk1. 8 detailed introduction to the implementation principle of HashMap
HashMap overview HashMap is an asynchronous implementation of map interface based on hash table. This implementation p…… -
Java Swing implementation tab function (jtabbedpane) example code
Swing implements tab function (jtabbedpane) First create a jtabbedpane object. The constructor can use jtabbedpane (in…… -
Detailed explanation of wechat payment H5 call payment (Java version)
Recently, WeChat paid for the project, and then paid the WeChat official account. Though it is not difficult, details …… -
Server push chat room instance based on tomcat7, Java and websocket
preface HTML5 websocket realizes the two-way communication between the server and the browser. The two-way communicati…… -
Java online book Mall (8) order module 3
Continue with the previous article. 3. Query order details OrderServlet desc.jsp 4. Cancel order and confirm receipt T…… -
Java implements a simple red envelope grabbing algorithm (simulating real red envelope grabbing)
I have nothing to do. Recently, the project needs to write the user login home page to send a cash red envelope. There…… -
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…… -
The RSA public-private key generated by Java OpenSSL for data encryption and decryption is introduced in detail
The RSA public-private key generated by OpenSSL is used for data encryption and decryption in Java What is RSA: RSA pu…… -
Java online mall project part 1 user registration module
This article explains the user registration module of the mall project for your reference. Let's take a look at the re…… -
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 timer and timer instance code used in thread pool
Java timer timer Simple example code: Timer in thread pool Thank you for reading, hope to help you, thank you for your…… -
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……