Zero-to-Expert Tutorial

Java Complete Learning Path

Java is a strongly typed language and JVM ecosystem used for general software, concurrent systems, backend services, and enterprise applications.

Starts from zero
84 lessons
14 modules
6 projects

Start Tutorial

Begin From ZeroNo prior subject knowledge is assumed.

Ordered ModulesFollow the curriculum in order without skipping prerequisites.

Complete ProjectsPlan, build, integrate, test, and refine real outcomes.

Direct Lesson AccessEvery curriculum item links directly to its lesson.

About this tutorial

Learn Java from the beginning

Java is a strongly typed language and JVM ecosystem used for general software, concurrent systems, backend services, and enterprise applications.

This continuous 84-lesson curriculum starts from zero, introduces every required tool and concept in order, and progresses through First Program, Workflow, Java Foundations, Object-Oriented Java, Collections Generics and Streams, Modern Java and JVM before capstone work.

Who this tutorial is for

First-time Java learners and developers progressing toward build tooling, testing, concurrency, Spring Boot, and production services.

Prerequisites

No previous Java experience is required. The opening curriculum begins with “What Java Is and What You Can Build with It” and introduces setup, accounts, software, terminology, and prerequisite checkpoints before advanced work.

Master curriculum

Complete Java Tutorial

Follow all 84 lessons in exact curriculum order. Open any lesson directly from the curriculum below and follow the modules in order.

Module 1

Start Here

2 lessons · Start from Zero

Lesson 1

What Java Is and What You Can Build with It

Start from Zero · Sequential Tutorial Lesson

Start from ZeroLesson Lesson 2

Understand the JDK JVM JRE and Java Toolchain

Start from Zero · Sequential Tutorial Lesson

Start from ZeroLesson

Module 2

Setup

4 lessons · Start from Zero

Lesson 3

Module 3

First Program

3 lessons · Beginner

Lesson 7

Module 4

Workflow

3 lessons · Beginner

Lesson 10

Module 5

Java Foundations

5 lessons · Beginner

Lesson 13

Module 6

Object-Oriented Java

6 lessons · Beginner

Lesson 18

Module 7

Collections Generics and Streams

6 lessons · Intermediate

Lesson 24

Module 8

Modern Java and JVM

6 lessons · Intermediate

Lesson 30

Module 9

Concurrency and I/O

6 lessons · Intermediate

Lesson 36

Module 10

Build Testing and Quality

6 lessons · Advanced

Lesson 42

Module 11

Spring Boot

6 lessons · Advanced

Lesson 48

Module 12

Enterprise Java Production

6 lessons · Professional

Lesson 54

Module 13

Projects and Capstones

24 lessons · Capstone

Project 1 · plan

Module 14

Finish and Continue

1 lessons · Completion

Lesson 84

Complete the Java Tutorial and Choose What to Learn Next

Completion · Tutorial Completion

CompletionLesson

Ready to begin?

Start at lesson 1 and follow the curriculum in sequence.

Start Tutorial

Java Complete Learning Path

Learn Java from the beginning

Who this tutorial is for

Prerequisites

What Java Is and What You Can Build with It

Understand the JDK JVM JRE and Java Toolchain

Install a Modern JDK on Windows macOS or Linux

Choose IntelliJ IDEA VS Code or Eclipse for Java

Verify java and javac from the Terminal

Create Your First Java Project

Write Compile and Run Your First Java Program

Understand Classes main Methods Packages and Source Files

Use Console Input and Output in Java

Understand Maven and Gradle at a Beginner Level

Use the Java Debugger and Read Stack Traces

Learn How to Read Java API Documentation

Understand Java Variables Types and Operators

Use Conditions Loops and Control Flow

Write Methods Parameters and Return Values

Work with Strings Numbers and Dates

Handle Exceptions Correctly

Create Classes Objects and Constructors

Use Encapsulation and Access Modifiers

Use Inheritance and Polymorphism

Design with Interfaces and Abstract Classes

Use Records Enums and Sealed Classes

Apply Composition and SOLID Principles

Use List Set Map Queue and Deque

Write Generic Classes and Methods

Use Comparable Comparator and Sorting

Process Data with the Stream API

Use Collectors Grouping and Reduction

Avoid Stream and Collection Performance Traps

Use Lambdas and Functional Interfaces

Use Optional Without Misusing It

Understand the Java Memory Model

Understand Garbage Collection Basics

Use Reflection and Annotations

Use Modules and Package Design

Create Threads and Use Executors

Use CompletableFuture

Protect Shared State and Use Concurrent Collections

Use Virtual Threads Effectively

Read and Write Files with NIO

Build Network Clients with the Java HTTP Client

Manage Builds with Maven

Manage Builds with Gradle

Write Unit Tests with JUnit

Use Mocks Carefully with Mockito

Write Integration Tests

Use Static Analysis Logging and Code Quality Tools

Create a Spring Boot Application

Build REST APIs with Spring MVC

Use Dependency Injection and Configuration

Validate Requests and Handle Errors

Use Spring Data JPA

Secure APIs with Spring Security

Use Transactions Correctly in Spring

Build Resilient External Service Calls

Add Caching and Background Processing

Observe Java Apps with Metrics Logs and Traces

Containerize a Spring Boot Application

Design a Production-Ready Java Service

Project: Understand Requirements and Plan Java console banking system

Project: Build the Foundation of Java console banking system

Project: Complete and Integrate Java console banking system

Project: Test Debug Refine and Finish Java console banking system

Project: Understand Requirements and Plan Collections and streams analytics app

Project: Build the Foundation of Collections and streams analytics app

Project: Complete and Integrate Collections and streams analytics app

Project: Test Debug Refine and Finish Collections and streams analytics app

Project: Understand Requirements and Plan Concurrent processing service

Project: Build the Foundation of Concurrent processing service

Project: Complete and Integrate Concurrent processing service

Project: Test Debug Refine and Finish Concurrent processing service

Project: Understand Requirements and Plan Tested Maven library

Project: Build the Foundation of Tested Maven library

Project: Complete and Integrate Tested Maven library

Project: Test Debug Refine and Finish Tested Maven library

Project: Understand Requirements and Plan Spring Boot REST API