Java EE vs J2EE vs Jakarta EE

Java EE vs J2EE vs Jakarta EE

Ever heard of Java EE? How about Java 2EE, J2EE, or now Jakarta EE? Actually, these are all different names for the same thing: a set of enterprise specifications that extend Java SE. In this short article, we’ll describe the evolution of Java EE.

Ever heard of Java EE? How about Java 2EE, J2EE, or now Jakarta EE? Actually, these are all different names for the same thing: a set of enterprise specifications that extend Java SE. In this short article, we’ll describe the evolution of Java EE.

1. History

In the first version of Java, Java enterprise extensions were simply a part of the core JDK.

Then, as part of Java 2 in 1999, these extensions were broken out of the standard binaries, and J2EE, or Java 2 Platform Enterprise Edition, was born. It would keep that name until 2006.

For **Java 5 **in 2006, **J2EE **was renamed to Java EE or Java Platform Enterprise Edition. That name would stick all the way to September 2017, when something major happened.

See, in September 2017, Oracle decided to give away the rights for Java EE to the Eclipse Foundation (the language is still owned by Oracle).

2. In Transition

Actually, the Eclipse Foundation legally had to rename Java EE. That’s because Oracle has the rights over the “Java” brand.

So to choose the new name, the community voted and picked: **Jakarta EE. **In a certain way, it’s still JEE.

*New name announced

This is still an evolving story, though, and the dust hasn’t completely settled.

For example, while Oracle open-sourced the source code, they did not open-source all the documentation. There’s still a lot of discussion over this matter because of legal issues that make it tricky to open-source documentation related to, for example, JMS and EJB.

It’s not clear yet if new Eclipse Foundation documentation will be able to refer to the originals.

Also, curiously, the Eclipse Foundation can’t create any new Java packages using the javax namespace, but it can create new classes and subclasses under the existing ones.

The transition also means a new process for adding specifications to Jakarta EE. To understand it better, let’s take a look at what that process was like under Oracle and how it changes under the Eclipse Foundation.

3. The Future

Historically, in order for a feature to make it into “EE”, we needed three things: **a specification, a reference implementation, and tests. **These three things could be provided by anyone in the community, and an Executive Committee would decide when these were ready to add to the language.

To better understand the past process, let’s take a closer look at what JSRs, Glassfish, and the TCK are and how they embodied new EE features.

We’ll also get a glimpse of what to expect in the future.

3.1. The JCP and Now, the EFSP

In the past, the process by which a new EE feature was born was called the Java Community Process (JCP).

Java SE still uses the JCP today. But, since EE has changed its ownership, from Oracle to the Eclipse Foundation, we have a new and separate process for that. It’s the Eclipse Foundation Specification Process (EFSP) and it’s an extension of the Eclipse Development Process.

There are some important differences, though, mostly around “Transparency, Openness, Shared Burden and Vendor Neutrality”. The EFSP organizers, for example, envision collaborative working groups that are vendor-neutral, a certification process that is self-service, and an organization that operates and governs as a meritocracy.

3.2. JSRs

In the JCP, the first step to adding a feature to EE was to create a JSR or Java Specification Request. The JSR was a bit like the interface for an EE feature. The JCP Executive Committee reviewed and approved a completed JSR, and then JSR contributors would code it up and make it available to the community.

A good example of this was JSR-339 – or JAX-RS – which was originally proposed in 2011, approved by JCP in 2012 and finally released in 2013.

And while the community could always weigh in while a specification was under discussion, time showed that an implementation-first approach – like in the case of JSR 310, java.time*, *and Joda Time – tended to create more widely-accepted features and APIs.

So, the EFSP reflects this code-first view in its stated goal: “EFSP will be based on hands-on experimenting and coding first, as a way to prove something is worthy of documenting in a specification.”

3.3. Glassfish

Then, as part of the JCP, a JSR needed a reference implementation. This is a bit like the class that implements the interface. A reference implementation helps developers of compatible libraries or other organizations that want to create their own implementation of the spec.

For Java EE features, the JCP used Glassfish for its reference implementations.

And while this centralization on Glassfish simplified the discovery process for implementers, that centralization also required more governance and had a tendency to favor one vendor over another.

Hence, the EFSP doesn’t require a reference implementation, but instead only a compatible implementation. Simply put, this subtle change makes so that implementations inside of a central architecture, like Glassfish, won’t be inadvertently preferred by the foundation.**

3.4. TCK

Finally, the JCP required that EE features be tested through the Technology Compatibility Kit, or TCK.

The TCK was a suite of tests to validate a specific EE JSR. Simply put, in order to comply with Java EE, an application server needs to implement all of its JSRs and pass all the tests on the designated TCK.

Not much changes here. Oracle open-sourced the TCK as well as the EE JSRs. Of course, all future documents and the TCK will be open-source.

4. Conclusion

Java EE has certainly evolved a lot during those years. It’s nice to see it continuing to change and improve.

There are many challenges ahead, so let’s hope for a smooth transition.

Java Fundamentals: Learn Java for absolute beginners |Simpliv

Java Fundamentals: Learn Java for absolute beginners |Simpliv

Java Fundamentals: Learn Java for absolute beginners

Description
This is the best course to learn to program in Java in Spanish from scratch and without any experience in this fabulous programming language. This is the first course where we will study the Fundamentals of Java, and we will take you step by step until you acquire the bases of the Java language and you can start to study more advanced Java topics.

The content is divided into perfectly structured levels, each level supported by the previous one, with the aim of adding Java knowledge incrementally and so you can focus on mastering the issues little by little and gradually. So ensure the success of your Java training.

We will also offer support for any doubts about the didactic material included in this Java Fundamentals course.

We manage a new teaching methodology that we have called Speed ​​Learning. This methodology consists of concise videos that go directly to the point to be studied, complemented by eBooks with explanations and step-by-step images (which you can print, or search for any text you need, or use for your offline study), since As we know we can not do text search within a video. In addition, our methodology includes perfectly structured and very didactic exercises that will allow you to accelerate your eLearning learning. No loss of time in videos where you have to watch the instructor codify an exercise, too much theory, little practice or anything like that. Our Speed ​​Learning methodology guarantees that in the shortest possible time you will acquire the necessary knowledge for the Java professional and working world.

The Java Fundamentals course includes the following topics for study:

Lesson 1 - Starting with Java Technology

The amazing world of Java programming

What is Java technology (from a practical approach)

Our first Java program from scratch

Lesson 2 - Variables and Operators in Java

Use of Variables in Java and what we use them for

Types of Data in Java and how they are classified

Management and Classification of operators in Java

Lesson 3 - Control statements in Java

Using the if-else structure and where to use it

Handling the switch structure and when applying it

Lesson 4 - Handling Loops in Java

Use of the for loop and its use

Using the while loop and how to apply it

Use of the do-while loop and when to use it

Lesson 5 - Object Oriented Programming

Introduction to Object Oriented Programming (OOP)

Handling Classes in Java

Use of Objects in Java

Lesson 6 - Functions in Java

Declaration of Methods or Functions in Java

Use and call of functions in Java

Lesson 7 - Data Management in Java

Using Arrays in Java

Management of Matrices in Java

Lesson 8 - Inheritance in Java

Inheritance Management in Java

Use of superclasses and subclasses in Java

Final Level Laboratory

Final Exercise where everything learned in this Level is integrated

At the end you get a certificate of having completed the Java Fundamentals course.

We wait for you on the other side.

Ing. Ubaldo Acosta

Founder of Global Mentoring

Passion for Java Technology

Who this course is for:

Anyone who wants to learn how to program in Java
Basic knowledge
Basic knowledge of PC use
Basic management of an operating system such as Windows, Mac or Linux
It is not necessary to know how to program, we will start from scratch !!!
The attitude and desire to start coding and learning Java once and for all from scratch!
What will you learn
Have the basics of the programming language with Java
You will know the basic syntax of the Java language
Manage the concept of Variables and Operators in Java
We will study Object Oriented Programming with Java
You will learn the Control Statements and Loops in Java
We will see the concept of Functions with Java
We will study the concept of Inheritance in Java
We will learn to use Arrays in java
We will handle the concept of Matrices in Java
We will learn to Design Classes in Java
We will make a final application with everything learned in the course
To know more:

Java Essentials : Learn Core Java From Basic to Advance

Java Essentials : Learn Core Java From Basic to Advance

Learn Java Programming Using Practical Assignments. Start Building Back-end Web Applications Robust Test Automation Frameworks By End Of The Course. Learn More!

Description
This is only Java related course and it's great because it covers just the right amount of Java which is needed to leaning programming, java.

This is a comprehensive yet simple course on java programming language and it concentrates on Java programming concepts.

*************************** No Prior Coding Experience Needed ***************************

This course assumes that you have no programming background. If you have some experience then, it's just a bonus point. You have never code, have some experience or have a lot of experience any other programming language, this course is one stop place for you.

Java is one of the most and useful programming languages to learn You can build back-end of web applications and build robust test automation framework. Specially for Selenium WebDriver GUI automation, Java is most popular choice and has the largest community.

Each lecture consist of a video screencast and code files

There are quizzes, homework to test your knowledge

High focus on practice and asking questions

You will also learn coding best practices

Market is never short of jobs in Java programming language, there are ample of jobs in both Java development and Automation Testing using Java.

What are you waiting for? Enroll today and learn the powerful Java language !!!

Basic knowledge
Nothing else! It’s just you, your computer and your hunger to get started today
Java concepts are covered in the course, no experience needed
Windows/MAC computer
What will you learn
You will be able to EXPLAIN, DESIGN and IMPLEMENT efficient java Programs
You will be confident to clear test automation interviews
Understand the concepts of Object Oriented Programming Language
Complete understanding of java
Expert-level knowledge of Java code (+ advanced tips and tricks used by the pros)
Suitable for beginner programmers and ideal for users who learn faster when shown
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Fundamentos de Java: Aprende Java desde cero, sin misterios | Simpliv

Fundamentos de Java: Aprende Java desde cero, sin misterios | Simpliv

Fundamentos de Java: Aprende Java desde cero, sin misterios

Description
This is the best course to learn to program in Java in Spanish from scratch and without any experience in this fabulous programming language . This is the first course where we will study the Java Fundamentals, and we will take you step by step until you acquire the basics of the Java language and so you can start studying more advanced Java topics.

The content is divided into perfectly structured levels , each level supported by the previous one, with the aim of adding Java knowledge incrementally so that you can focus on mastering the issues little by little and gradually. So ensure the success of your Java training.

In other offer support of any doubt teaching materials included in this course Fundamentals of Java.

To make matters worse, we handle a new teaching methodology that we have called Speed ​​Learning. This methodology consists of concise videos that go directly to the point to study, complemented with eBooks with explanations and step-by-step images (which you can print, or search for any text you need, or use for your offline study), since as we know we cannot do text search within a video. In addition, our methodology includes perfectly structured and very didactic exercises, which will allow you to accelerate your eLearning learning. Without wasting time on videos where you have to watch the instructor codify an exercise, too much theory, little practice or anything like that. Our Speed ​​Learning methodology guarantees that in the shortest possible time you will acquire the necessary knowledge for the professional and professional world of Java.

The Java Fundamentals course includes the following topics of study:

Level. Java basics

Lesson 1 - Starting with Java Technology

The amazing world of Java programming
What is Java technology (from a practical approach)
Our first Java program from scratch
Lesson 2 - Variables and Operators in Java

Use of Variables in Java and what we use them for
Data types in Java and how they are classified
Operator Management and Classification in Java
Lesson 3 - Control sentences in Java

Use of the if-else structure and where to use it
Management of the switch structure and when to apply it
Lesson 4 - Cycle Management in Java

Use of the for cycle and its use
Use of the while cycle and how to apply it
Use of the do-while cycle and when to use it
Lesson 5 - Object Oriented Programming

Introduction to Object Oriented Programming (OOP)
Class Management in Java
Using Objects in Java
Lesson 6 - Functions in Java

Declaration of Methods or Functions in Java
Use and call of functions in Java
Lesson 7 - Data Management in Java

Using Arrangements in Java
Matrix Management in Java
Lesson 8 - Inheritance in Java

Inheritance Management in Java
Use of superclasses and subclasses in Java
Final Level Laboratory

Final Exercise where everything learned in this Level is integrated
At the end you get a certificate of having completed the Java Fundamentals course.

We wait for you from the other side.

Ing. Ubaldo Acosta

Founder of Global Mentoring

Passion for Java Technology

Who this course is for:

Anyone who wants to learn to program in Java
Basic knowledge
Basic knowledge of PC use
Basic operation of an operating system such as Windows, Mac or Linux
It is not required to know how to program, we will start from scratch !!!
The attitude and desire to start coding and learning Java once and for all from scratch !!!
What will you learn
Have the basics of the programming language with Java
You will know the basic syntax of the Java language
Will handle the concept of Variables and Operators in Java
We will study Object Oriented Programming with Java
You will learn Control Sentences and Cycles in Java
We will see the concept of Functions with Java
We will study the concept of Inheritance in Java
We will learn to use Arrangements in java
We will handle the concept of Matrices in Java
We will learn to Design Classes in Java
We will make a final application with everything learned in the course
To continue: