Ask HN advice: C++ into Java programming

My advice would be to dive in. If you've learned a solid base of C++ and have built some apps then I'd look for an open source Java app that does something along the lines of what you've done in C++. Given the many references online you should be able to walk through the source code and figure out how they got to the same result. I know this is a sort of "reverse engineering" approach to development but it really forces you to look at what they're doing instead of the usual tutorials in programming books that bear little relevance to real world applications. This is a great technique to use in conjunction with more traditional learning methods (books/tutorials/websites.) Hope this helps!

C and C++ are always a good languages to learn. You can code from the lowest to the highest levels, procedurally or OO. People starting out with a garbage-collected language would find it harder to understand memory management or lower level optimizations. Also, as a programmer, C and C++ will provide gainful employment for the next few decades at least. They are unlikely to really be replaced by anything else for their versatility.

Continue learning C++. It will teach you fundamentals of OOP. Then make something nice and useful with C++. Make yourself feel comfortable with C++ and then try make some Android app. They have good documentation and it's fun :)

Check out "TheNewBoston" on youtube, he has a decent collection of Java tutorials.

SCJP Exam for J2SE 5 by Paul Sanghera (it's designed for people taking the cert but it's pretty good)

Effective Java (teaches you the common pitfalls) Concurrency in practice (if you're doing multithreaded stuff)

Although the title is a bit of a lie, I'm liking the Sam's Teach Yourself Java in 24 Hours book right now.

http://amzn.to/hleb3g

If you know C++ I'm guessing you know object oriented programming and its terminology. The only thing new to you in Java should be the syntax so start with a template for defining a class and work your way up from there. My background is mostly in dynamic scripting languages like javascript and ruby but applying what I knew to learn Java was pretty easy. The only thing new was all the extra type declarations. Don't worry about generics and the reflection API in the beginning because once you get used to the syntax figuring out how generics fit in your code and how to make use of them will be pretty easy. If you're looking for extra motivation to keep you going you could try writing an android application, that's actually how I learned it. For extra moral support you could pick up a book but in my experience programming books get outdated pretty quickly and the online Java docs cover pretty much everything you'd need to know.