This page maps out the complete path from zero Java knowledge to job-ready skills. Work through the tutorials in order. Each one builds on the last.
Phase 1: Foundations
Get Java running on your computer and write your first programs. By the end of this phase, you’ll understand how Java code is structured and how to work with basic data.
- What is Java? A Beginner’s Guide
- How to Install Java
- Your First Java Program: Hello World
- Java Variables and Data Types
- Java Operators Explained
Phase 2: Control Flow
Programs need to make decisions and repeat actions. This phase covers the structures that control how your code executes.
- Working with Strings in Java
- Java Conditionals: if, else, switch
- Java Loops: for, while, do-while
- Getting User Input with Scanner
Phase 3: Methods and Arrays
Learn to organize code into reusable blocks and work with collections of data. These skills are essential for writing real programs.
Phase 4: Object-Oriented Programming
Java is built around objects. This phase covers the concepts that define how Java developers think about and structure code.
- Introduction to Object-Oriented Programming
- Java Classes and Objects
- Java Constructors
- Java Inheritance
- Java Polymorphism
- Java Encapsulation
Phase 5: Intermediate Concepts
Round out your skills with interfaces, error handling, file operations, and Java’s powerful collections framework.
- Java Interfaces
- Abstract Classes in Java
- Java Exception Handling
- Reading and Writing Files in Java
- Java Collections Framework Overview
- Introduction to Java Generics
Phase 6: Professional Development
Modern Java features and professional tools. Lambda expressions, streams, databases, build tools, and web frameworks.
- Java Lambda Expressions
- Java Streams API
- Java Multithreading Basics
- Introduction to JDBC
- Introduction to Maven
- Introduction to Spring Boot
Projects
Put your knowledge to work by building complete applications for your portfolio.
- Build a Console Calculator – Beginner project using Phases 1-3
- Build a To-Do List App – Intermediate project with file I/O and collections
- Build a REST API with Spring Boot – Advanced project with database and web framework
Beyond the Core Curriculum
Advanced Topics
Professional patterns and practices for senior-level skills.
- Java Design Patterns
- Java Unit Testing with JUnit
- Java Logging Best Practices
- Java Dependency Injection Explained
- Java Optional and Null Safety
- Java Records and Sealed Classes
Comparisons
See how Java stacks up against other languages.
- Java vs Python
- Java vs JavaScript
- Java vs Kotlin
- Java vs C#
- Java vs C++
- Java vs Go
- Java vs Rust
- Java vs TypeScript
- Java vs Swift
Interview Prep
Get ready for your first Java developer job.
- 10 Java Interview Questions Every Entry-Level Developer Should Know
- How to Prepare for a Java Technical Interview
- Java Coding Challenges for Beginners
- OOP Interview Questions in Java
- Java Collections Interview Questions
Career
Plan your path as a Java developer.
- Java Developer Career Path
- Java Developer Salary Guide
- Is Java Worth Learning in 2026?
- Java vs Other Languages for First Job
Tools & Resources
Setup guides, cheat sheets, and learning resources.
- Best Java IDEs Compared
- Setting Up Java in VS Code
- How to Debug Java Code
- Java Naming Conventions
- Best Free Resources to Learn Java
- Java Syntax Cheat Sheet
- Java String Methods Cheat Sheet
- Java Collections Cheat Sheet
- Java Exceptions Cheat Sheet
Questions? Get in touch.