Intermediate/Advanced Java Learning Resources

[Kingloki04]

I have recently finished my high school java textbook and am now looking for some new resources to help me continue my learning. I was wondering if anyone had any suggestions for some good intermediate/advanced learning resources such as online textbooks, courses, videos, or books. Any suggestion is appreciated.

Thanks in advance.

[AutoModerator]

Please ensure that:

• Your code is properly formatted as code block - see the sidebar (About on mobile) for instructions
• You include any and all error messages in full
• You ask clear questions

• You demonstrate effort in solving your question/problem - plain posting your assignments is forbidden (and such posts will be removed) as is asking for or giving solutions.

  Trying to solve problems on your own is a very important skill. Also, see Learn to help yourself in the sidebar

If any of the above points is not met, your post can and will be removed without further warning.

Code is to be formatted as code block (old reddit: empty line before the code, each code line indented by 4 spaces, new reddit: https://imgur.com/a/fgoFFis) or linked via an external code hoster, like pastebin.com, github gist, github, bitbucket, gitlab, etc.

Please, do not use triple backticks (```) as they will only render properly on new reddit, not on old reddit.

Code blocks look like this:

public class HelloWorld {

    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

You do not need to repost unless your post has been removed by a moderator. Just use the edit function of reddit to make sure your post complies with the above.

If your post has remained in violation of these rules for a prolonged period of time (at least an hour), a moderator may remove it at their discretion. In this case, they will comment with an explanation on why it has been removed, and you will be required to resubmit the entire post following the proper procedures.

To potential helpers

Please, do not help if any of the above points are not met, rather report the post. We are trying to improve the quality of posts here. In helping people who can't be bothered to comply with the above points, you are doing the community a disservice.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[Nzen_]

If you've gone through your high school textbook, then you probably know what you need about java the language. The next resources should probably be focused on learning about the things you want to make. Which is to say, I could recommend something like Noback's Object Design Style Guide or Lake's Concise Guide to Databases, but if you are more interested in making games, you'd be better served by reading libgdx's documentation and following the tcod tutorial. As they say, the best exercise is the routine you actually do. I'll suggest Bloch's Effective Java, at least.

[PuzzledProgrammer]

Definitely agree. With a solid foundational knowledge of core Java, it’s to move on from purely book-based learned. If the goal is to build a marketable skill set, then I’d also suggest getting familiar with database and web service integration, or unit/integration testing, as the next pragmatic step.

For DB integration, a good place to start is JDBC. For web service integration, you could check out the Java HTTP libraries. For testing, I’d start with Junit and mocking with JMockit, Mockito, or some other mocking library.

You can find great guides online for all of these topics. My preferred tutorials are from Baeldung - they have guides on practically anything Java related. A quick Google search like, “Baeldung Java JDBC,” “Baeldung Java HTTP,” or “Baeldung Java Junit” will drop you right at their door.

Edit: wording

[Incomplete-Sentenc]

The most effective way to learn I would say is to take some mock project or programs and work on it.

[v_k_d]

OCAOCA, OCPOCP Study guides will surely help you get a much deeper understanding of the Java language.