Programmer Group

1. Build JAVA development environment Uninstall JDK (please ignore those not installed) Delete the JDK installation directory Delete JAVA_HOME and CLASS_PATH environment variable Delete PATH and JAVA_HOME and CLASS_PATH related environment variables Install JDK Go to Oracle's official website to download JDK or go to some domestic image ...

preface Mastering thread pool is a basic requirement for back-end programmers. I believe that almost everyone will be asked about thread pool during the job interview. I collected several classic thread pool questions on the Internet and took them as a starting point to talk about my understanding of thread pool. If ...

preface When sending an HTTP request, Spring MVC will perform a series of processing after receiving it, and then respond to the resource. How is the whole process handled? Execution process Core components Dispatcher servlet: front-end controller, which does not need to be developed by engineers. It is provided by the framework to uniforml ...

Processes and threads A process (. exe) contains multiple threads, which occupy the resources of process memory Why? It's like QQ can type and chat with others while video There is a picture and a truth example Write a Java The program implements multithreading. The name of the thread is output in the thread. It is output once in 1000 ...

Request forwarding and redirection for spring MVC 1. Request forwarding of spring MVC -- thymeleafView thymeleafVIew view If the return value [view name] of the method processing the request is not prefixed, this view will be parsed by the view parser configured by spring MVC. This view is a thymeleaf view. As for why there is such a distinc ...

scene Three commonly used auxiliary classes are provided in JUC. These auxiliary classes can well solve the frequent operation of Lock lock when there are too many threads. The three auxiliary classes are: • CountDownLatch: decrease count • CyclicBarrier: Circular barrier • Semaphore: signal light Decrease count CountDownLatch ...

1. Introduction to spring event monitoring The Spring framework provides a set of event publishing and listening mechanism. For developers, they can publish events as long as they hold the ApplicationContext instance, and they can receive and process events as long as they implement the ApplicationListener interface. A typical use example ...

mybatis learning notes, 2.MyBatisTest 1. Introduction 1. Interface programming Native: Dao = = = = > daoimplmybatis: Mapper ====> xxMapper.xml 2. SqlSession represents a session with the database; It must be closed after use; 3. SqlSession, like connection, is non thread safe. You should get a new object every time you use it. ...

I haven't written java for a long time. I came back this time because the voice function is required before the project. Turing connected with the company only supports amr and opus audio format upload for recognition, However, as far as I know, the microphone provided by unity only supports wav and mp3. Therefore, the previous solution has ...

import hue.edu.xiong.volunteer_travel.core.Result; import hue.edu.xiong.volunteer_travel.core.ResultGenerator; import hue.edu.xiong.volunteer_travel.model.*; import hue.edu.xiong.volunteer_travel.service.SystemService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.sp ...