What prerequisites should I have before enrolling in these Java courses?

Before starting with the Java courses on CourseFlix, it is recommended to have a basic understanding of programming concepts and familiarity with object-oriented programming. Some courses, like 'Java Foundations: The Complete Course with Java 21 Updates', are suitable for beginners, but others, such as 'Master Microservices with Java, Spring, Docker, Kubernetes', require prior knowledge of Java basics and understanding of microservices architecture.

What can I build or do after learning from these Java courses?

After completing courses in this Java category, you can build robust enterprise applications using Spring Boot, create RESTful services, design microservices architectures with Docker and Kubernetes, and implement secure authentication systems using Spring Security. Additionally, you'll be equipped to work on reactive programming projects using Project Reactor or RxJava, and optimize applications with GraalVM for faster startup.

What job roles typically require expertise in Java?

Roles that commonly require Java expertise include Java Developer, Backend Developer, Full Stack Developer, Software Engineer, and Microservices Architect. Java is also crucial for Android Developers and positions in enterprise settings such as Financial Software Engineer and Systems Analyst, where Java's reliability and performance are paramount.

Are there free courses available in this Java category, or are they all paid?

CourseFlix offers a mix of free and paid courses in the Java category. Some introductory courses may be available for free, providing a foundation in Java basics. However, more advanced and specialized courses, such as 'Master Spring Boot 3 & Spring Framework 6 with Java', typically require a paid subscription. It's advisable to check the course listings for specific pricing details.

Are there related categories I should consider learning alongside Java?

Alongside Java, it might be beneficial to explore categories like DevOps, which covers Docker and Kubernetes, to enhance your skills in deploying Java applications. Additionally, learning about databases and SQL can complement your Java knowledge, especially if you're interested in persistence technologies like Hibernate and JPA covered in these courses.

Java

53 courses Added March 2026

Java is a statically-typed, object-oriented language that has powered enterprise backends since 1995 and is currently in its strongest decade in years. The Java 17 LTS and Java 21 LTS releases brought records, sealed classes, pattern matching, virtual threads (Project Loom), and dramatically faster startup with GraalVM native images.

The Spring ecosystem is still the default for new server applications: Spring Boot for HTTP services, Spring Data for persistence, Spring Security for auth, Spring Cloud for distributed-system primitives. The Quarkus and Micronaut frameworks compete for the same role with smaller memory footprints and faster startup, particularly on Kubernetes.

What you'll work with in these 54 courses

Modern Java: records, sealed classes, pattern matching, virtual threads
Spring Boot 3.x, Spring Data JPA, Spring Security, Spring Cloud
Build tools: Maven, Gradle, dependency management, multi-module projects
Persistence: Hibernate, JPA, JOOQ for SQL-first work
Testing: JUnit 5, Mockito, Testcontainers, AssertJ
Reactive programming: Project Reactor, RxJava, Spring WebFlux

Most enterprise backends in banking, insurance, telecom, and government still run Java. Outside finance: LinkedIn's API gateway, Netflix's microservice substrate, Twitter's search, the entire Android platform, and most of Apache Foundation infrastructure (Kafka, Cassandra, Spark, Hadoop).

Popular courses in Java

Updated 2y ago

Ultimate Java Part 1: Fundamentals

Mosh Hamedani (Code with Mosh)

Java Data Structures and Algorithms Masterclass

Udemy

44h 58m

Updated 2y ago

The Ultimate Data Structures & Algorithms: Part 2

Mosh Hamedani (Code with Mosh)

5h 56m

Updated 2y ago

Building Your First App with Spring Boot and Angular

Pluralsight

2h 22m 5 / 5

Updated 2y ago

The complete guide to running Java in Docker and Kubernetes

Udemy

4h 39m

FreeClassic

Master Spring 6 Spring Boot 3 REST JPA Hibernate

Udemy

36h 15m 5 / 5

Updated 3y ago

Java Programming Masterclass covering Java 11 & Java 17

Udemy

80h 13m 5 / 5

Updated 2y ago

Java Messaging Service - Spring MVC, Spring Boot, ActiveMQ

Udemy

1h 47m

Classic

Master Spring Boot 3 & Spring Framework 6 with Java

Udemy

37h 34m 5 / 5

Java Courses & Tutorials (53)

New
Hands-On Mocking With Mockito
Learn how to efficiently create and configure mock objects with Mockito. Manage the behavior of your tests and control component interactions.
2h 8m
Updated 7mo ago
Low Level Design
The course is dedicated to Low-Level Design (LLD) - a key stage in software development where abstract ideas and architectural decisions are transformed into.
22h 34m
Updated 1y ago
Java Puzzles to Eliminate Code Fear
The motivation behind this course came from an article titled "Why Can't Programmers Program?" by Jeff Atwood. It talks about how poorly many candidates perform
7h 33m
Updated 2y ago
Java Foundations: The Complete Course with Java 21 Updates
This course is designed for absolute beginners in programming and for those who don't mind learning Java at a slower pace.
88h 37m
Updated 2y ago
Java Data Structures & Algorithms + LEETCODE Exercises
Welcome to the Java Data Structures and Algorithms course! Embark on an exciting journey where complex programming concepts become accessible and engaging.
9h 47m
Updated 2y ago
Mastering Java 17
In this course, we will thoroughly explore the key innovations in Java 12, 13, 14, 15, 16, and 17.
8h 20m
Updated 2y ago
Java Messaging Service - Spring MVC, Spring Boot, ActiveMQ
Apache ActiveMQ is open source message broker developed in Java. Have you ever thought how WhatsApp works ? One to one messaging and one to many messaging tech
1h 47m
Updated 2y ago
Spring Professional Certification Exam Tutorial - Module 08
Spring Professional Exam Tutorial explains and answers all questions from Spring Professional Certification Study Guide. Each answer to exam topic is explained
1h 54m
Updated 2y ago
RESTful Web Services, Java, Spring Boot, Spring MVC and JPA
This video course also covers the H2 in-memory database and teaches how to build RESTful Web Service that stores data in a database without a need to install My
25h 8m
Updated 2y ago
Java Streams API
Functional programming is becoming very popular and it focuses around pure functions. Functional applications avoid the shared state, and tend to be more concis
2h 33m
Updated 2y ago
Learn Blockchain Technology & Cryptocurrency in Java
Blockchain is a revolutionary technology that allows for decentralized and distributed storage of information. Maybe the hottest topic at the moment in the fiel
5h 44m
Updated 2y ago
Learn Java Unit Testing with Junit & Mockito in 30 Steps
Learn Mockito and JUnit - the most popular Java unit testing and mocking frameworks - with 25 Examples. Writing Great Unit Tests distinguishes Good Programmers
4h 44m
Updated 2y ago
Java Generics
As a Java software engineer is important to know how to write generic algorithms to write clean and re usable api's. Java Generics has been introduce remove unn
1h 8m
Updated 2y ago
Java Test Automation Engineer - from Zero to Hero
Are you ready to embark on an exciting journey to become a Test Automation Hero in Java? Whether you're new to programming or have some experience, this course
18h 40m
Updated 2y ago
gRPC [Java] Master Class: Build Modern API & Micro services
gRPC is a new and modern framework for building scalable, modern and fast API. It is leveraged by many top tech companies such as Google, Square & Netflix and e
5h 9m
Updated 2y ago
RabbitMQ : Messaging with Java, Spring Boot And Spring MVC
RabbitMQ : It is an open source message broker software. You might have heard Java Messaging Service (JMS) by which two Java applications can communicate with
4h 3m
Updated 2y ago
Cats
We Scala programmers love abstractions and Cats is one of the most popular libraries. At the same time, Cats is notorious for having a steep learning curve. Fun
10h 39m
Updated 2y ago
Java Design Patterns
Our Java Design Patterns Course is the best value-for-money education you can give your programmers. During an intensive 4 days, we cover all of the Gang-of-Fou
16h 20m
Updated 2y ago
Java Crew #2
12 hours of sessions on the topic “Microservice architecture” Report “Domain Driven Design and microservices in Java”: Stanislav Koksharov Interview “Sage. Obse
12h 12m
Updated 2y ago
Experience Design Patterns In Java
Boost your software designs by taking this content-rich and hands on fully featured training course. This course will give you insight in the more than 20+ desi
7h 19m
Updated 2y ago
Testing Java with JUnit 5 & Mockito
Unit Testing is a must-have skill and this video course is about unit testing. If you take this video course, you will learn how to test your Java code using JU
7h 41m
Updated 2y ago
Recursion, Backtracking and Dynamic Programming in Java
This course is about the fundamental concepts of algorithmic problems focusing on recursion, backtracking, dynamic programming and divide and conquer approaches
9h 46m
Updated 2y ago
Java Data Structures and Algorithms Masterclass
Welcome to the Java Data Structures and Algorithms Masterclass, the most modern, and the most complete Data Structures and Algorithms in Java course on the inte
44h 58m
Updated 2y ago
Java Servlets and JSPs developer course
You will learn to understand the basics of servlets (a simple Java interface that extends the functionality of a server) and the technology that allows web deve
2h
Updated 2y ago
Algorithms in Java: Live problem solving & Design Techniques
Algorithm Design Techniques: Live problem-solving in Java. Algorithms are everywhere. One great algorithm applied sensibly can result in a System like GOOGLE! C
19h 41m
Updated 2y ago
Data Structures & Algorithms !
Learn data structures and algorithms from scratch. Start with basic data structures and work your way up to intermediate. This course is for all those who want
28h 40m5/5
Updated 2y ago
Oracle Java Certification - Pass the Associate 1Z0-808 Exam.
So you've learnt some Java, but are struggling to get an interview, let alone a job. Or you are stuck in a low paying programming job, and want to move up to a
20h 8m
Updated 2y ago
Java from Zero to First Job, Practical Guide, 2000+ examples
Welcome to the fundamental and the most complete course 'Java from Zero to First Job'. As it's declared in the course name, it's created for people who want to
80h 4m
Updated 2y ago
Spring Security 6 Zero to Master along with JWT,OAUTH2
'Spring Security Zero to Master' course will help in understanding the Spring Security Architecture, important packages, interfaces, classes inside it which ha
14h 50m5/5
Updated 2y ago
Microservices: Clean Architecture, DDD, SAGA, Outbox & Kafka
Hi there! My name is Ali Gelenler. I'm here to help you learn microservices architecture while applying Clean and Hexagonal Architectures and using Domain Drive
18h 2m

Frequently asked questions

What prerequisites should I have before enrolling in these Java courses?: Before starting with the Java courses on CourseFlix, it is recommended to have a basic understanding of programming concepts and familiarity with object-oriented programming. Some courses, like 'Java Foundations: The Complete Course with Java 21 Updates', are suitable for beginners, but others, such as 'Master Microservices with Java, Spring, Docker, Kubernetes', require prior knowledge of Java basics and understanding of microservices architecture.
What can I build or do after learning from these Java courses?: After completing courses in this Java category, you can build robust enterprise applications using Spring Boot, create RESTful services, design microservices architectures with Docker and Kubernetes, and implement secure authentication systems using Spring Security. Additionally, you'll be equipped to work on reactive programming projects using Project Reactor or RxJava, and optimize applications with GraalVM for faster startup.
What job roles typically require expertise in Java?: Roles that commonly require Java expertise include Java Developer, Backend Developer, Full Stack Developer, Software Engineer, and Microservices Architect. Java is also crucial for Android Developers and positions in enterprise settings such as Financial Software Engineer and Systems Analyst, where Java's reliability and performance are paramount.
Are there free courses available in this Java category, or are they all paid?: CourseFlix offers a mix of free and paid courses in the Java category. Some introductory courses may be available for free, providing a foundation in Java basics. However, more advanced and specialized courses, such as 'Master Spring Boot 3 & Spring Framework 6 with Java', typically require a paid subscription. It's advisable to check the course listings for specific pricing details.
Are there related categories I should consider learning alongside Java?: Alongside Java, it might be beneficial to explore categories like DevOps, which covers Docker and Kubernetes, to enhance your skills in deploying Java applications. Additionally, learning about databases and SQL can complement your Java knowledge, especially if you're interested in persistence technologies like Hibernate and JPA covered in these courses.