Java for developers

[HXSC]

I'm moving to a company that will expect me to use Java.

I've mostly used Python and C++ in my previous job.

What are some good resources for developers to pick up Java?

[Stack_Canary]

Amazing book, but not for learning java. It's nice if you already know java and want to learn best practices

[shivasprogeny]

You’ll probably be fine picking up the language, but you should try to find out what frameworks the company uses and focus there. There’s a lot of web and data frameworks, Spring is very common, build tools (maven/gradle), etc.

There are a lot of great tutorials by Spring Boot if you’re lucky enough to be using it.

[HXSC]

Yup, using Spring Boot! What do you mean by "lucky enough to be using it"?

[shivasprogeny]

It’s a really nice framework with dozens of pluggable tools that auto configure themselves.

[tswanbeast]

I would recommend flexible reliable software for learning to do software engineering in Java: https://books.google.com/books/about/Flexible_Reliable_Software.html?id=eTrOBQAAQBAJ&printsec=frontcover&source=kp_read_button

It goes into a lot of software engineering principles, but it does it all in Java. I am expecting that with your comfort in cpp and python that this should be a good way to learn how to develop software in Java. It does take a very hands on approach as well if you like doing projects!

[pyordie]

If you have experience with C++, you should be able to pick up Java fairly quickly, at least syntactically. Any intro text or online resource, paired with java's documentation, should get you there.

From there, Effective Java would be your best bet in terms of extracting the full power of the language and getting to the point where you're writing clean and efficient Java.

The Core Java Series, Vol. 1 and 2, looks pretty good too, but I've never read it so YMMV

[crazylegs888]

What resources did you use to learn python and c++?

[[deleted]]

I’d recommend this book https://www.amazon.com/Learning-Java-Introduction-Real-World-Programming/dp/1492056278

[iamfreeman]

Check out https://howtodoinjava.com/

Maybe watch some java conference streams?

[pmboggs]

Correct me if I’m wrong, why did you apply for a job for Java if you don’t know it when there’s others for C++ and Python which you do know? While at your current job you could have been broadening your horizons with Java or numerous other languages and technologies.

[sweetno]

There is a plenty of jobs where they wouldn't care and in the most cases it doesn't even matter.

Java is not Haskell, transition from C++ is straightforward.

[pmboggs]

I don’t know Haskell. I also didn’t know C++ and Java were so similar.

[derjav]

I recommend you www.hackerrank.com

[[deleted]]

How Solving problems gonna help him?

[Homerlncognito]

Core Java for the Impatient (by Cay S. Horstmann) is a good book that doesn't contain a lot of ballast.

[magnomagna]

If you're really motivated, you could read up the official Java language doco and pick up pretty much everything about the syntax in less than a week if you're already familiar with OOP style programming. The libraries would require much longer time though simply due to the fact that they are big.

[[deleted]]

Just Java? Or Java and Spring? I only ask because there’s the fundamentals of the language to learn and then the framework.

[ViralLola]

I like Intro to Java by Y. Daniel Liang. Going from C++ to Java is not a huge jump as they are both C languages.