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Modern Java: From Fundamentals to Advanced Architecture

Master Java 25 with hands-on learning in modern OOP, functional Streams, advanced concurrency, and professional testing with JUnit 6.

182 Lessons

3 Projects

20h

Updated this week

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LEARNING OBJECTIVES

A solid understanding of the Java Virtual Machine (JVM) and the “write once, run anywhere” philosophy
An understanding of object-oriented programming (OOP) principles, including inheritance, polymorphism, and encapsulation
Hands-on experience with the latest Java 25 features, including advanced Records and Sealed slasses, and modern Switch expressions
The ability to write clean, functional-style code using Lambda expressions and the Stream API
Proficiency in managing complex data structures using the Java Collections framework and generics
Knowledge of concurrent programming, from basic threads to advanced tools like the Executor framework and CompletableFuture
Hands-on experience with file I/O, JSON processing with Jackson, and professional testing using JUnit 6
Familiarity with the Java ecosystem, including build tools like Maven/Gradle, and an introduction to Spring Boot

Learning Roadmap

182 Lessons3 Projects16 Quizzes

The Java Mindset

Understand the Java’s architecture by exploring its design philosophy, program structure, documentation tools, and the internal mechanics of the JVM.

Course Overview

Anatomy of a Java Program

Comments and Documentation

How Java Runs Code Behind the Scenes

Quiz: The Java Mindset

Variables, Types, and Operators

Establish the foundation of data manipulation in Java, covering primitive and reference types, type casting, and wrappers needed to build an expressive logic.

Primitive and Reference Types

Literals and the var Keyword

Operators and Expressions

Casting and Type Conversion

Wrapper Classes and Autoboxing

Quiz: Variables, Types, and Operators

Exercise: The Coffee Shop Receipt

Solution: The Coffee Shop Receipt

Exercise: Planetary Gravity Calculator

Solution: Planetary Gravity Calculator

Exercise: Network Permission Flags

Solution: Network Permission Flags

Control Flow and Methods

13 Lessons

Master the core logic of Java programming by controlling execution flow with conditionals and loops, and structuring code into reusable, modular methods.

Classes and Objects

14 Lessons

Transition into OOP by defining classes and objects, enforcing encapsulation, mastering initialization with constructors, and organizing code using packages.

Inheritance and Polymorphism

12 Lessons

Scale application design by building class hierarchies with inheritance, enforcing contracts via interfaces, and writing flexible code through polymorphism.

Strings and Arrays

14 Lessons

Enhance data processing capabilities by mastering text manipulation with strings and StringBuilder, and organizing structured information using arrays.

Build a Cinema Ticket Booking Application

Project

Advanced OOP Features

12 Lessons

Elevate class design by encapsulating logic with nested types, modeling data with records and enums, and securing hierarchies with sealed classes.

Exception Handling

12 Lessons

Build resilient applications by managing runtime errors with the exception hierarchy, implementing structured recovery logic, and designing custom exceptions.

File and Data I/O

12 Lessons

Manage external data by navigating file systems with NIO.2, persisting objects via serialization, and processing structured text using JSON.

10.

Collections Framework

11 Lessons

Streamline data management by mastering the Collections framework, selecting optimal structures like Lists and Maps, and applying efficient iteration patterns.

11.

Generics and Type Safety

12 Lessons

Enforce type safety and reusability by designing generic classes and methods, leveraging wildcards for flexible APIs, and mastering custom sorting strategies.

Personal Finance Analyzer

Project

12.

Functional Programming in Java

12 Lessons

Adopt functional programming by simplifying code with lambdas, processing data via Streams, and handling nulls safely with Optional.

13.

Threads and Concurrency

11 Lessons

Enable efficient multitasking by managing the thread life cycle, synchronizing shared resources with locks, and ensuring safe concurrent execution.

14.

Modern Concurrency Tools

12 Lessons

Scale apps by managing thread pools with Executors, building async pipelines via CompletableFuture, and synchronizing tasks using coordination utilities.

15.

Reflection and Metadata

8 Lessons

Unlock runtime flexibility by inspecting code with Reflection, defining metadata with Annotations, and structuring apps with the Java Module System.

16.

Testing, Logging, and Build Tools

9 Lessons

Deliver reliable software by verifying logic with JUnit, monitoring runtime behavior with logging, and managing builds with modern tools.

StockPulse: A Real-Time Trading Simulation

Project

17.

Wrapping Up

Solidify your mastery by synthesizing the course journey, reinforcing modern practices, and charting a path toward enterprise frameworks and architecture.

Conclusion and The Road Ahead

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Developed by MAANG Engineers

Every Educative lesson is designed by a team of ex-MAANG software engineers and PhD computer science educators, and developed in consultation with developers and data scientists working at Meta, Google, and more. Our mission is to get you hands-on with the necessary skills to stay ahead in a constantly changing industry. No video, no fluff. Just interactive, project-based learning with personalized feedback that adapts to your goals and experience.

ABOUT THIS COURSE

Java is widely used in enterprise systems and large-scale cloud applications. Recent releases have introduced features that improve developer productivity and performance in distributed systems. This course covers the key language and platform updates in Java 25 to help developers build or modernize their applications. You’ll start by establishing a Java mindset and exploringbthe JVM architecture and its core building blocks. Next, you’ll move into advanced OOP, covering core principles alongside modern constructs such as Records and Sealed classes. You’ll explore functional programming with the Stream API, handle data using the Collections framework, and build high-performance software with the Executor framework and structured concurrency. Finally, you’ll examine professional tools, including JUnit 6 and Spring Boot. By the end, you will have a solid grasp of Java 25 and the proficiency to design, build, and deploy secure, scalable, maintainable backend applications in real-world environments.

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