Programmer Group

1, Introduction to libSVM libSVM is a set of support vector machine library developed by Professor Chih Jen Lin of Taiwan in 2001. This library has fast operation speed and can easily classify or regress data. libSVM has become the most widely used SVM Library in China because of its small program, flexible application, few input parameter ...

Thread safety and lock use When we use multiple threads to access the same resource (which can be the same variable, the same file, the same record, etc.), if multiple threads only have read operations, thread safety problems will not occur, but if multiple threads have read and write operations on resources, thread safety problems are easy to ...

Cereal mall project (learning note 1) Cereal mall project (learning note 2) Chapter II: initialization project catalogue Chapter II: initialization project 1, Initialize database 2, Introduction of Renren open source 1. Download Ren fast and Ren fast Vue 2. Introduce Ren fast in the backend 3. Introduce the front-end Ren fast Vue 4. T ...

preface Now more and more projects begin to use workflow to meet their daily work. Today, let's take a look at the workflow of Activiti. Let's start with BPMN painting Environment installation BPMN documents about processes are mainly integrated through eclipse development tools. The idea is mainly painted by actiBPM, but actiBPM is no long ...

Overview of JDBC JDBC (Java Database Connectivity) is a set of interface to connect database provided by Java language. The implementation of interface is called database driver in JDBC and is provided by major database manufacturers. The reason for this is that the user doesn't need to care about how the underlying implementation is imple ...

Parsing the. Class file javap -v xxxxx.class Or IDEA to install the jclasslib plug-in Class loader subsystem Class loader and loading process The class loader subsystem is responsible for loading class files from the file system or network. Class files have a specific file ID at the beginning of the fileClassLoader is only responsible for l ...

3. Construction of Maven project 3.1 contents of Maven project The structure of the project is as follows: See the following figure for details: 3.2 commands for manually building projects mvn compile #compile mvn clean #eliminate mvn test #test mvn package #pack mvn install #Install to local warehouse Just be familiar ...

Video address: [crazy God says Java] HTML5 complete teaching is easy to understand 1. What is HTML HTML Hyper Text Markup Language W3C World Wide Web ConsortiumFounded in 1994, it is the most authoritative and influential international neutral technical standards organization in the field of Web technologyhttp://www.w3.org/http: ...

MyBatis core profile 1.MyBatis core profile hierarchy 2.MyBatis common configuration analysis (1) environment label   the configuration of database environment supports multi environment configuration There are two types of transaction manager: JDBC: this configuration directly uses the commit and rollback settings of JDBC. It depen ...

Non intrusive: many classes have been written in the system, and now a new technical framework can be used. While using the new framework, the original class does not need to be changed (there is no need to inherit and implement the interface in the new framework). Framework: Spring, Hibernate, Mybatis Intrusive: many classes have been wri ...