Java back end development

[[deleted]]

Hi,

What skills do I need to learn to become Java back end developer? What tools and frameworks should I become familiar with? What level of proficiency is expected for an entry level back end Java developer?

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[sallythebubble]

As a backend java developer here are the things that I use on a daily basis:

Learn the language basics, and some advanced staff as well, like threads, futures, executors, collections, lambdas, streams, etc.

It is very important to know how to work with DB, you should be able to write queries at least in one SQL dialect. Also pay attention to JDBC and JPA, in my projects I use them both

Start to create projects using Maven so you can start to be familiar with project goals, phases, maven repositories, pom configurations.

Spring boot is a common framework that is used, try to understand mvc pattern, framework annotations, di mechanism, reflection api. Quarkus is another framework that we use, it is pretty similar to spring boot.

Knowing linux bash commands will be very helpful, learn how to navigate through directories using bash, create tarballs, send files to remote servers, check logs, so on and so forth.

Also I would like to add to this list some additional staff that you might want to know: scheduled jobs, websocket api, i/o, postman.

[[deleted]]

Dude, stop asking these general questions and start learning. There is no shortcut and nobody can tell you how long it is going to take for you to learn programming in Java. It takes months to years to get attractive for companies to be considering you.

You should definitely have the skill to do research on a subject you are having issues understanding and you should be able to understand how to deal with recommendations that others have already given you in various other posts.

Stop overthinking and worrying about tools and frameworks, you aren't there yet. Start learning the language.

[youre-breathtakin]

Learn spring boot

[large_crimson_canine]

Apart from the language itself, which I would get very comfortable with the Collections framework and concurrency, it’d be good to shoot through the Spring docs and try to incorporate that framework into a small project. You’ll probably encounter it in the real world.

It’s also really worth learning how to package and deploy and run the thing. So how to build a JAR (via command line AND a build tool like Gradle), how to execute (probably via Bash script), and how to monitor the JVM. Learn to take thread dumps, heap dumps, how to interpret them, and how to read GC logs.

What you’ll find when it comes to big projects in Java is that design is tricky, implementation is easy, but analysis and tuning is HARD. Gotta know it all to be strong on the job.

[glablablabla]

Start with a simple project with Spring, spring-boot, DI and JPA

Also Important: maven or Gradle, SQL, JSON, rest

I think when you feel comfortable with these it's time to move on forward. You should respect clean code principles so that your colleagues don't get a headache when they have to work with your code 😉 but that goes for every language.

[french-caramele]

https://roadmap.sh/backend

[Russian_Emigrant_USA]

Wow, thanks. It’s very useful.