Free Java Course - Learn OOP, Collections & Enterprise Java
Master Java programming with our free course. Learn OOP, collections, multithreading, and build enterprise applications.
What's Inside Every Lesson?
Every topic is designed so complete beginners can follow along step by step
Interactive Code Editor
Write & run real code in the browser — no setup needed
Practice After Every Topic
Hands-on exercises reinforce what you just learned
Q&A Flip Cards
Common questions answered with simple explanations
Module Quizzes
Test your knowledge before moving to the next module
Mini Projects
Build real apps — a calculator, to-do list, and more
Visual Diagrams
Concepts explained with clear, annotated diagrams
// Your very first Java program!
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
System.out.println("Welcome to Java ☕");
// Variables
String name = "Alice";
int age = 25;
System.out.println("Name: " + name + ", Age: " + age);
}
}Who This Course Is For
Targeted at Computer Science students, Android developers, and enterprise software engineers. Java remains the primary language for large-scale backend systems and Android development.
Prerequisites
Basic programming logic understanding. Experience with any scripting language is a plus but not required.
First published February 2024 · Updated 2026
What You'll Learn
- Java fundamentals and OOP principles
- Collections framework and data structures
- Exception handling and file I/O
- Multithreading and concurrent programming
Career Opportunities
Course Modules Overview
Java Basics & Setup
4 topics
Variables, Data Types & Operators
4 topics
Control Flow & Loops
4 topics
Object-Oriented Programming
3 topics
Classes, Inheritance & Polymorphism
3 topics
Collections Framework
3 topics
Exception Handling
3 topics
File I/O & Streams
3 topics
Multithreading & Concurrency
3 topics
Java Project: Banking Application
4 topics
Spring Framework & Modern Java
4 topics
Java Career & Enterprise Development
4 topics
Complete all 12 modules to unlock your course completion certificate
Course Curriculum
12 comprehensive modules covering everything from basics to advanced topics
Java Basics & Setup
Learn java basics & setup with practical examples and exercises.
Variables, Data Types & Operators
Learn variables, data types & operators with practical examples and exercises.
Control Flow & Loops
Learn control flow & loops with practical examples and exercises.
Object-Oriented Programming
Learn object-oriented programming with practical examples and exercises.
Classes, Inheritance & Polymorphism
Learn classes, inheritance & polymorphism with practical examples and exercises.
Collections Framework
Learn collections framework with practical examples and exercises.
Exception Handling
Learn exception handling with practical examples and exercises.
File I/O & Streams
Learn file i/o & streams with practical examples and exercises.
Multithreading & Concurrency
Learn multithreading & concurrency with practical examples and exercises.
Java Project: Banking Application
Build a complete banking application with Java — OOP design, collections, exception handling, file I/O, and a professional console interface.
Spring Framework & Modern Java
Master Spring Boot, JPA, modern Java features, and professional testing.
Java Career & Enterprise Development
Master Java microservices, performance tuning, interview prep, and career paths.
Your Learning Roadmap
Follow this structured path — from first concepts to production-ready mastery
Modules 1-3: Java fundamentals and basics
Modules 4-7: Advanced concepts and practical applications
Modules 8-12: Spring, microservices, and enterprise development
Modules 1-3: Java fundamentals and basics
Modules 4-7: Advanced concepts and practical applications
Modules 8-12: Spring, microservices, and enterprise development
Tools & Technologies
Essential tools you'll master during this course
IntelliJ IDEA
Java IDE
Maven
Build tool
JUnit
Testing framework
Ready to Start Learning?
Begin your journey with Module 1 and build your skills step by step. Completely free, no registration required.
Start Learning NowRelated Free Courses
Continue your learning journey with these related courses — all 100% free