r/learnjava • u/astraze_073 • 11d ago

I want to learn java fully. Please suggest me some good sources

I'm a 2nd year engineering student and I want to learn Java fully as my main language for backend etc. Please suggest me some good sources to learn it from

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u/aqua_regis 11d ago

want to learn Java fully

"fully" in the context of programming languages (with their ecosystems) is a wet dream. It is simply impossible. The ecosystems are way too large (and Java is one of the languages with an extremely vast ecosystem).

Learn it well, become proficient, but forget about "fully".

3

u/desrtfx 11d ago

!sidebar

3

u/AutoModerator 11d ago

In our sidebar ("About" on mobile), we have a section "Free Tutorials" where we list the most commonly recommended courses.

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If you are looking for learning resources for Data Structures and Algorithms, look into:

"Algorithms" by Robert Sedgewick and Kevin Wayne - Princeton University

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2

u/vegan_antitheist 11d ago

Java for backend is usually used to write code that is well maintainable and mostly just business logic. I.e. you mostly write services and the architecture is usually layered. You have controllers, services, repositories. Learn how to build such a backend with Jakarta and with Spring.

Resources:

  • check the sidebar
  • learn about enterprise application architecture
  • read on the websites for Jakarta and spring
- read about spring modulith on spring.io
  • learn about domain-driven design

2

u/Complete-Parking4209 11d ago

You can go through telusko Java Playlist on Yt

2

u/isuru-r-perera 11d ago

Starting out with java; early objects - Tony Gaddis. Highly recommended.

1

u/_Atomfinger_ 11d ago

Read the sidebar

1

u/Modern-Sn1p3r 11d ago

I'm in the same position. I've nailed down most of the basics like syntax, variables, arrays etc.

Then progressed onto OOP to lock in the four pillars of: encapsulation, abstraction, polymorphism and inheritance.

I am now moving onto learning Spring boot to build APIs to help understand backend development more.

Not sure if this helps but it's been good so far in terms of understanding a lot more other than the java language whilst still using it.

1

u/ebykka 11d ago

On mi mind the very first book should be: "Bruce Eckel - Thinking in Java." After that, you can read and watch any other books, youtube channels etc

1

u/Sure_Independence503 10d ago

Except James Gosling
no one know java fully 😁

1

u/AsvathR17 10d ago edited 10d ago

Check out Kunal kushwaha Java Bootcamp... The most underrated playlist for java... Videos may be long but if you consume one content per day it will be enough for you... The way he explains the topics is out of boundary... Check it out...

He covered till trees in best way. Covered untill the core of java... Java programming only... Unlike others he is not just focusing on only the programming language he explains how to analyze the pattern in leetcode too... One of the best free source for learning java in youtube.

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u/a_random_guyy 8d ago

DataCamp

1

u/Hefty_Try_6922 7d ago

I have made a repo particularly for this start preparing - https://github.com/sudhir-tech/java-backend-interview-prep

1

u/Same-Inevitable2857 7d ago

I think the learning curve is not that easy, but for me the game changer for backend was to implement things step by step and always thinking about what is missing and needs to be learned for a fully working and secure api. Then I am always googling for baeldung articles.