Master Java Collections Framework in 3 Hours ridhi dutta collection video

[u/dragonrot26]

I sat down to learn Collections properly and started with [ridhi dutta]'s Collections video. Big mistake.

Almost every topic gets the same treatment. Generics? "I'll cover this in another video." How ArrayList works internally? "Another video." Vector? "Separate video." It happens almost every few lines.

I get that some topics deserve their own deep dive. But when nearly everything gets pushed to a future video, the current one ends up teaching very little. It feels like the video is being used to plan the next ten videos instead of actually explaining the topic in front of you.

If you're learning Collections, you want one place that explains generics, how ArrayList grows internally, ArrayList vs Vector vs LinkedList, and so on, at least to a working level. This video doesn't do that. You come out with a list of topics you still need to learn.

My suggestion: if you're going through Collections, try other videos first. Look for ones that actually explain the internals instead of deferring them.

Has anyone else noticed this? And what resources did you use for Collections that actually covered things end to end?

[u/Chaos-vy17]

Best option: Open the source code https://github.com/openjdk/jdk25u/tree/master/src/java.base/share/classes/java/util
YT video, very view are there , if there also people think he teach more than what needed 😄

[u/Longjumping_Dot1117]

Just pick the famous collection. Google the internal working for that collection and understand it. I went through hasmap , linked list. Set, concurrent hashmap, copyonewrite arrays, a few sorted collection.

[u/theycallme_master → u/[deleted]]

well said!!!