Programmer Think

Library management system is a common small project in learning programming. After learning classes and objects, encapsulation, inheritance, polymorphism and interfaces, we can use these ideas to realize our library management system. Here I will use two blogs to explain the specific implementation methods. Blog link: 1. Business requirements ...

Java file streaming and I/O file concept A file is where data is stored.File stream: files are operated in the form of stream in the program.Stream: the path of data between the data source (file) and the program (memory)Input stream: the path of data from data source (file) to program (memory)Output stream: the path of data from program (me ...

Three characteristics of object-oriented: encapsulation, inheritance and polymorphism encapsulation In order to ensure the security of variables, we use encapsulation, do not care about the specific implementation details, but only access the members of the class through external excuses. public class Student { private String name; p ...

1 objectives SpringBoot project can be created quickly (without writing any configuration files)Introduction to the basic principles of SpringBootIntroduction and use of SpringBoot configuration fileSpringBoot integrates Mybatis, Redis and timerSpring boot sends Http requestTesting in SpringBootSpring boot packaged deployment 2 create a Spring ...

review Implementation steps of developing spring MVC with annotations: Create a new web projectImport related jar packagesWrite web XML, register DispatcherServletWrite spring MVC configuration fileThe next step is to create the corresponding control class, controllerFinally, improve the correspondence between the front-end view and the contr ...

Environmental preparation OS: MacOSJDK: java version "1.8.0_231"idea: 2019.3.4Gradle: 5.6.4 1. Download Spring source code 1.1 method 1-Github official https://github.com/spring-projects/spring-framework Recommendations: Select the release version to downloadThe network speed is too slow. Select mode 2 1.2 mode 2-Gitee Code cloud acce ...

1, Effect display main interface: Add books: Modify interface: 2, Front end implementation 1,Vue.cli build project Enter vue ui on the command line (UI interface with vue version above 3.0) vue ui Manually create the project and select the following configuration to use: Wait until the project is created, because the bac ...

If you are doing java development, there will be various jar packages in your project, but manual copying is error prone, and the version dependency requires you to find jar packages everywhere to download, so it is necessary for you to learn maven to help you manage jar packages and get twice the result with half the effort~ Now let's ask an ...

Idea operation Maven detailed usage:Introduction to MavenWhat is MavenMaven's correct pronunciation is[ ˈ mev ə n] "Sell v", not "horse plague" and other plagues.Maven is a project management tool, which contains a project object model (POM), a set of standards.What problems can Maven solveNow we need to use many third-party ...

  Project introduction   MVC model   Project introduction (download at the end of the text):   Calculator window, user interface   Button monitoring and keyboard monitoring are equivalent to controllers   Data processing, equivalent to model   General idea, When the user clicks the button or presses the keyboard, the ...