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Spring Framework is the most popular application development framework in Java.
Spring Boot helps to create stand-alone applications with minimal configuration.
Spring MVC is a web framework based on the Model-View-Controller pattern under the Spring framework.
ThymeLeaf is a server-side Java template engine that supports HTML5 JVM web development and integrates with Spring Framework.

Spring + Restful

Java 11-17 is used for PBL. Java 8 is often the College Board standard. Features like Reactive Streams, HTTP2 client, JShell, and React JS are more recent than Java 8.
GitHub: Learning to manage code changes, branches, pull requests, and more is crucial.
DevOps in development: Java developers should be familiar with managing environments and automation tools like Git, Maven, and Docker.
REST and Microservices with Spring: Learn how to create and consume RESTful APIs effectively.

How to: RESTful API

The Java Persistence API (JPA) provides a query language for CRUD operations on objects in a database.
Beans, Controller Code, and Business Logic interact with JPA to manage data flow to and from the database.
Object-Relational Mapping (ORM) maps Java classes (entities) to a relational database structure.
Plain Old Java Objects (POJO) are the basic building blocks of JPA and ORM. These classes are typically annotated with @Entity to mark them as persistent data classes.

Spring + JPA