Java editions (SE, EE, ME)
Java editions (SE, EE, ME)
Section titled “Java editions (SE, EE, ME)”Java is available in several editions tailored to different development environments.
Java SE (Standard Edition)
Section titled “Java SE (Standard Edition)”Java SE is the core platform. It includes:
- The JDK and JRE
- Core APIs:
java.lang,java.util, I/O, networking, etc. - Development tools
It is used for desktop applications, command‑line tools, and as the foundation for other editions.
Examples: GUI applications with Swing/JavaFX, server‑side libraries, and utilities.
Java EE (Enterprise Edition) – now Jakarta EE
Section titled “Java EE (Enterprise Edition) – now Jakarta EE”Java EE (renamed Jakarta EE after Oracle transferred it to the Eclipse Foundation) adds libraries for large‑scale, multi‑tier enterprise applications.
Key technologies:
- Servlets, JSP, JSF (web applications)
- Enterprise JavaBeans (EJB)
- JPA (Java Persistence API)
- JMS (messaging)
- CDI (dependency injection)
Examples: e‑commerce platforms, banking systems, RESTful services.
Java ME (Micro Edition)
Section titled “Java ME (Micro Edition)”Java ME is a subset of Java SE designed for resource‑constrained devices such as:
- Mobile phones (feature phones)
- Embedded systems
- IoT devices
It provides tailored profiles (e.g., CLDC, MIDP) that offer a smaller footprint and specific APIs.
Examples: older mobile games, smart cards, industrial controllers.
Relationship
Section titled “Relationship”- SE is the base.
- EE extends SE with enterprise features.
- ME is a subset of SE adapted for small devices.
Today, many developers use Spring Boot (which runs on SE) for enterprise applications instead of traditional Java EE servers, but the underlying concepts remain relevant.