Java, Jakarta EE learning help needed

[Babu Muthukrishnan]

Hello All,
I have 10 years 3 months experience in Java, Java EE.
Now I do not have a job
I want to learn Java, Jakarta EE for getting employment purpose
I checked Oracle website where Oracle cloud Learning subscription looks costly for 1 year period
Please provide me any easy way to learn java, jakarta EE
Please help
Thank you

[Stephan van Hulst]

For me, the best way to learn was to first read the EE tutorials, and then to read the various Jakarta EE specs, and try them out on practice projects.

Here is the tutorial: https://eclipse-ee4j.github.io/jakartaee-tutorial/

Here you can find the specs: https://jakarta.ee/specifications/#specifications-list

You don't really need to read the specifications from front to back. Read the tables of contents to find out what a specification is about, and read the parts that you are interested in, or need for a project. You can always refer back to them when you need to know something specific. I don't have the specs memorized, I have to consult them on almost every project I work on.

Naturally, what specs you're going to need depend on the project you'll be working on, but I find that I mostly consult the following specs.


Backend stuff:

Jakarta Servlet

Jakarta Contexts and Dependency Injection

Jakarta Dependency Injection

Jakarta Enterprise Beans

Web APIs:

Jakarta RESTful Web Services

Jakarta JSON Binding

Jakarta XML Binding

Jakarta Bean Validation

Web pages:

Jakarta MVC

Jakarta Server Pages

Jakarta Expression Language

Other important considerations:

Jakarta Security

Jakarta Persistence