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Tuesday, December 14, 2021

Top 5 Courses to learn Java Collections and Stream API in 2024 - Best of Lot

Hello guys, If you have been programming in Java, then you know that Collections and Streams are two of the most important Java APIs. There is hardly any Java program I have written in my 15 years of professional Java development career where I have not used any classes from Collections and recently from Stream API. I strongly believe that every Java developer should have a good knowledge of both of them, and that's why I am writing this post. If you are new to Java, then you might be thinking about why they are so important? Well, they are important becuase they deal with data, and data is at the heart of every application and business. For example, if you create an application like Facebook, then where do you store your Users on memory?

Most likely, you will store them on a List or Hash table, and they are the classes that are provided by Java Collection Framework. In fact, the choice of List vs. Hashtable can also make a difference in how you will search for your users, and that's why a solid knowledge of Java Collections and Streams are important.

In other words, the Java Collection framework also provides implementations of popular data structure like an array, linked list, hash table, tree, stack, queue, priority queue, etc. in Java programming language.

Streams are relatively new and provide a way to extract data from collection and perform common operations like filtering, transformation, aggregation, normalization, and much more. Good knowledge of both Java collections and Stream goes a long way in writing better Java code, which is the objective of every Java developer and imperative for anyone who wants to become an expert Java developer.

If you are looking to improve your knowledge of the Java Collection framework and Stream API and looking for some excellent resources, then you have come to the right place. In this article, I am going to share the best online courses to learn Java Collections and Stream API in depth.

Btw, if you are new to Java and looking for a single course that covers everything a Java developer needs to know then I suggest you check out The Complete Java MasterClass course on Udmey. It is also one of the most up-to-date courses and covers new features like var, static factory method for collections, and Java modules from recent Java releases.

5 Best Java Collections and Stream API courses for Beginners in 2024

Without wasting any more of your time, here is my list of best online courses to learn Java Collections and Stream API from scratch and master them for writing better Java code:

1. Introduction to Collections & Generics in Java [Udemy]

This course provides a simple guide to understand generics, basic collections, and reflection in Java! It creates by Holczer Balazs and the course is trusted by more than 12K students in Udemy.

In this course, you will learn the basic concepts and functions that you will need to build fully functional programs with the Java programming language.

You will also learn the basics of generic types, generic methods, type parameters, and the theoretical background concerning these topics. This is a fundamental part of Java so it is definitely worth learning.

Top 5 Courses to learn Java Collections and Stream API

2. Java Fundamentals: Collections By Richard Warburton [Pluralsight]

This is a slightly old course but still, one of the best course to learn Java Fundamentals like List, Set, Map, Queue, Stack, etc. Created by a Java champion and popular instructor Richard Warburton, this course is packed with some of the most useful information for Java developers.

The course starts with why you really need to use collections instead of arrays, covers the capabilities of Lists, Sets, and Maps, and explains the different data structure tradeoffs.

Since working with data is fundamental to any business problem and Java Collections are data structures designed to store, and process data in memory, a good knowledge of Collections is imperative, and if you want to start with basics first, then this is the right course you.

Though you need a Pluralsight membership to access this course but don't worry, Pluralsight also offers a 10-day free trial and 200 minutes of free access to all of their course.  You can take advantage of fo that and can learn Collections.

Best Java Collection Course for Beginners

If you can, I also encourage you to join Pluralsight because you will gain access to 7000+ expert-led courses on the latest technologies which are essential for programmers who need to keep themselves up to date.

3. Java Streams API Developer Guide [Best Udemy Course]

Nelson Djalo is one of the most underrated Java instructors on Udemy. I have attended a couple of his courses like this one and Spring Boot essentials and I have been really impressed with his way of teaching and clear-cut explanation with working code in the background.

This course is completely focused on Java Stream API and you will learn all essential concepts and methods a Java developer needs to know like the map, reduce, flatmap, filter, groupBy, and others.

Nelson not only explains what does a particular method does but also shows the code about how to use that method in a bigger scheme of things. If you need a hands-on course to learn Java Streams then I highly recommend you check out this course.

Best Java Stream API course for Beginners

4. From Collections to Streams in Java 8 Using Lambda Expressions

This is another course on Pluralsight by another Java Champion, Jose Paumard who creates in-depth Java courses on Pluralsight. I first come across Jose Paumard while attending his Multithreading course, which is also a great one.

Didn't I say that Pluralsight has expert-led courses and their Java courses are a great example of that as most of them are designed and created by Java Champions like Jose and Richard Warburton?

As the title suggests, this course is focused on a new way of coding in Java and it will introduce you to the new patterns from Java 8, based on lambda expressions, the functional interfaces, the Collection Framework, and the Stream API.

best online course to learn Collections and Streams in Java

You will not only learn about lambda expressions but also about new patterns to process large data in Java without that Lambda would not be that useful. These new patterns have been added to the Collection Framework, and to the new Stream API.

This course also explains key functional programming concepts like map, filter, and reduce like what they are and why it has been added to the Stream API. Ultimately you will learn new ways to efficiently process bulk data in Java and improve your parallel programming skills.

5. Modern Java - Learn Java 8 features by coding it

It's been many years since Java 8 was introduced but there are still developers who are afraid to learn Lambdas, Streams, new Date APIs, Optionals, and Parallel programming in Java 8 and you can not learn it unless you start coding them.

If you are one who is afraid of functional programming in Java then this is course is for you. In this course, you will learn all the new Java 8 Features by coding them like lambdas and stream.

If you want to learn all the new features such as Lambdas, Streams, Optionals, Functional Interfaces, and Parallel Programming in a guided and coding full way then this course is for you.

best course to learn modern Java

That's all about the best courses to learn Java Collections and Stream API in depth. As I said these topics are very very important for every Java developer and you should spend some time learning and mastering these skills if you want to become an expert Java developer.

Good knowledge of Java Collections and Stream not only help you to do well on your Java interview but also will help you to write better code in Java. A bad choice of collections can make your application slow while a good choice can make it fast and stable.

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Thanks for reading this article so far. If you like these Java collections and Stream API courses then please share them with your friends and colleagues. If you have any questions or feedback then please drop a note.

P. S. - If you are new to the Java Programming world and looking for some free courses to start your Java programming journey then you can also check out this list of my favorite free Java courses for beginners. It contains some of the best free Java courses from Udemy, Coursera, Pluralsight, and Educative for beginners. 

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