Java

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День города Минска (2-ая суббота сентября) (9 и 10 сентября 2023)

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Леонид Овруцкий и группа "Кватро"|||Гомель 23 октября, Минск 24 октября 2026

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Компьютер, программы

Java

Download and install

Installation JDK (download and install the Java library for Windows)

Download and install IntelliJ IDEA to explore Java, Spring, Jakarta EE | Functionality and differences: Community | Ultimate

Learn the language Java (class, interface, properties, etc.)

Create a simple console app in IntelliJ IDEA to learn Java

Collections and Arrays

interface

What is interface in Java ?

Directly in the code (at runtime) we make an implementation for the interface | Java

Flows

Threads in Java

lambda, an unnamed method

lambda is an unnamed method (no name and no class owned) | Java

Exceptions

Exceptions and handling in Java. Example: try {...} catch (Exception e) {...}

Why use throws Exception in the function name in Java? Answer: The method throws an exception and there is no handling of try catch. Example: float CalculateDensity(float mass, float volume) throws Exception { ... throw new Exception("Error! Volume is zero."); ... }

Java web application (servlet, jsp page, basic functionality and no frameworks)

Web Application

Creating a new simple web application (jsp web page) | Java, Maven

Servlet

Create a web servlet (the servlet is located on the web server, returns the result on request) | Java

Web Server

Installation Tomcat web server (download and install for Windows)

Check, test Tomcat web server (create a new my.hml file)

Questions

What is a dynamic web page jsp (Java Server Page) ?

How to install Smart Tomcat plugin in Intellij Idea

Error "The SDK is not specified for module ... | Project SDK is not defined ..." in IntelliJ IDEA | Java

Spring in Java (Spring Framework, Spring Data, Spring Boot, ...)

What is Spring? Why use Spring in Java?

Spring Framework (IoC, Dependency Injection, Bean, Container)

What is Spring Bean? What is Spring Container? IoC (inversion of control) | Creating a simple Spring project and configuration Spring Container in an XML file | Editor IntelliJ Idea and language Java

What is Dependency Injection in Spring? Creating a simple Spring project with Dependency Injection in the constructor with the attributes @Component, @Autowired | Editor IntelliJ Idea and language Java

Spring Web

Create a new Spring Web application (the request goes to the Controller → Controller creates a response as text or json) | Java, Spring Web, Spring Boot, Maven

Spring WebSocket

Creating a new Spring WebSocket application (Java WebSocket sends a message to the JavaScript WebSocket) | Java, Spring WebSocket, Spring Boot, Maven

Cloud Azure for Spring Web

Create Azure Web App with the type Java (free). That is, create an empty web server

Put the Java Spring web application in Azure

Connect to the application Azure Web App (Java) via FTP | use File Explorer

Questions

Error "The SDK is not specified for module ... | Project SDK is not defined ..." in IntelliJ IDEA | Java, Spring Boot

How to install Spring WebSocket plugin in Intellij Idea

Jakarta EE / Java EE in Java (Web Applications, Web Services)

What is Jakarta EE (Java EE)? | In which editor (program) is it convenient to write Jakarta EE (Java EE) code?

Creating a simple web project in IntelliJ Idea Ultimate | Jakarta EE (Java EE)

Struts in Java (extends API Java Servlet using MVC)

What is Struts | Java

Courses, training

Course "Java developer" from Yandex

Interview

Interviews on Java

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