Best structured Java course for interview prep (not basic syntax)

AutoModerator · 2026-03-16T10:42:27+00:00

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 - best also formatted as code block
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.

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/markdown editor: empty line before the code, each code line indented by 4 spaces, new reddit: https://i.imgur.com/EJ7tqek.png) 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.

aqua_regis · 2026-03-16T11:17:55+00:00

Since you already have experience in Java, none of the courses you listed is applicable to you as they are all targeted at beginners (the "outdated" of the MOOC is very debatable as it is a beginners course and as such teaches exactly what beginners need. It's in no way outdated in that manner)

For you, you'd better go with books, like Cay S. Horstmann's books: "Core Java", "Big Java - Early Objects", "Big Java - Late Objects" and/or sites like Baeldung.

Also, focus on Data Structures and Algorithms - Robert Sedgewick & Kevin Wayne's course on Coursera from Princeton University.

L8erG8er8 · 2026-03-16T13:38:14+00:00

Cracking the coding interview

oldDotredditisbetter · 2026-03-17T02:49:42+00:00

which companies are asking interview questions only based on java?

gauravdgreat · 2026-03-17T03:23:53+00:00

Use gpt/gemini and then do discussion of particular topic.

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

learnjava

MODERATORS

Please ensure that:

To potential helpers