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Personal profile The author is a junior from Heyuan. The following notes are some shallow experience of the author's self-study road. If there are mistakes, please correct them. In the future, we will continue to improve our notes to help more Java lovers get started. SpringBoot+JDBC 1. Import JDBC and mysql dependencies In POM XML import t ...

The content of this paper is summarized in< Java Detailed explanation of high concurrency programming multithreading and architecture design Observer mode review As for the specific implementation, this article will not introduce it. You can view the link ->Observer mode case. The core of the observer model can be summarized as f ...

catalogue I What is Maven Maven project file structure: II Maven's configuration file - POM xml III Dependency management 1.maven warehouse 2. In POM Configure dependency in XML file IV Lifecycle and its related commands V Order in which Maven loads dependent packages I What is Maven Maven: project construction tool, packaging tool ...

Docker is used in combination with Idea plug-in 1, Install docker plug-in 1. New idea project 2. Check whether there is a Docker in the plug-in 3. In docker The port number is indicated in the service file modify Docker Service file , Comment out "ExecStart" This line and add the following information ExecStart=/usr/bin ...

1, Understanding of programs, processes and threads 1. Program Concept: it is a set of instructions written in a certain language to complete a specific task. Refers to a piece of static code. 2. Process Concept: an execution process of a program, or a running program. Note: as the unit of resource allocation, the system will allocate diff ...

Chapter 5 note inheritance, interface and abstract class Section I succession Subclasses inherit all properties and methods of the parent class (but cannot directly access private members)According to the information hiding principle: the subclass will inherit all the methods of the parent class. Can be used directlySubclasses can access ...

I General form of annotation injection Bean class public class TestBean{ } Configuration class @The Configuration annotation marks this class, which indicates that this class is a Spring Configuration class. It will be loaded when loading the Configuration. @The annotation of Bean indicates that this is a method of injecting Bean, which wi ...

Spring Configuration Data Source Role of data sources (connection pools) Data sources (connection pools) occur to improve program performancePre-instantiate the data source to initialize partial connection resourcesGet from data source when using connection resourcesReturn the connected resource to the data source after useCommon data sources ...

nacos Alibaba is an open source application architecture. Its core is "service", which provides a series of functions such as service discovery, configuration center and micro service management around services. The reason for choosing nacos is Chinese ecology, which is simple and easy to use. Key features of nacos (extracted from o ...

Gaode map API official website: Gaode open platform | Gaode map API . Since the blogger is developed based on the front-end Vue framework, the map JavaScript API * * * * is introduced in combination with Vue. 1, Case effect 2, Development preparation It should be noted that if you want to use JS API, you must register an account and ...