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Complete Java learning journey - 50 days of comprehensive Java tutorials, examples, and exercises

www.java.com/

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MIT license

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Name		Name	Last commit message	Last commit date
Latest commit History 53 Commits
.github		.github
Day 01 - Java Basics and Setup		Day 01 - Java Basics and Setup
Day 02 - Variables and Data Types		Day 02 - Variables and Data Types
Day 03 - Operators and Expressions		Day 03 - Operators and Expressions
Day 04 - Control Flow Statements		Day 04 - Control Flow Statements
Day 05 - Arrays and Strings		Day 05 - Arrays and Strings
Day 06 - Methods and Functions		Day 06 - Methods and Functions
Day 07 - Object-Oriented Programming Basics		Day 07 - Object-Oriented Programming Basics
Day 08 - Inheritance and Polymorphism		Day 08 - Inheritance and Polymorphism
Day 09 - Interfaces and Abstract Classes		Day 09 - Interfaces and Abstract Classes
Day 10 - Exception Handling		Day 10 - Exception Handling
Day 11 - Introduction to OOP		Day 11 - Introduction to OOP
Day 12 - Classes and Objects		Day 12 - Classes and Objects
Day 13 - Constructors and Initialization		Day 13 - Constructors and Initialization
Day 14 - Static Members		Day 14 - Static Members
Day 15 - Encapsulation and Access Modifiers		Day 15 - Encapsulation and Access Modifiers
Day 16 - Inheritance		Day 16 - Inheritance
Day 17 - Method Overriding		Day 17 - Method Overriding
Day 18 - Polymorphism		Day 18 - Polymorphism
Day 19 - Abstract Classes		Day 19 - Abstract Classes
Day 20 - Interfaces		Day 20 - Interfaces
Day 21 - Packages and Imports		Day 21 - Packages and Imports
Day 22 - Java API and Documentation		Day 22 - Java API and Documentation
Day 23 - Wrapper Classes and Autoboxing		Day 23 - Wrapper Classes and Autoboxing
Day 24 - String Handling		Day 24 - String Handling
Day 25 - Arrays Deep Dive		Day 25 - Arrays Deep Dive
Day 26 - ArrayList and Collections		Day 26 - ArrayList and Collections
Day 27 - LinkedList, Stack, Queue		Day 27 - LinkedList, Stack, Queue
Day 28 - HashMap and HashSet		Day 28 - HashMap and HashSet
Day 29 - Generics		Day 29 - Generics
Day 30 - Enum Types		Day 30 - Enum Types
Day 31 - File I/O Basics		Day 31 - File I/O Basics
Day 32 - Reading and Writing Files		Day 32 - Reading and Writing Files
Day 33 - Serialization		Day 33 - Serialization
Day 34 - Introduction to Threads		Day 34 - Introduction to Threads
Day 35 - Thread Synchronization		Day 35 - Thread Synchronization
Day 36 - Concurrency Utilities		Day 36 - Concurrency Utilities
Day 37 - Lambda Expressions		Day 37 - Lambda Expressions
Day 38 - Functional Interfaces		Day 38 - Functional Interfaces
Day 39 - Streams API		Day 39 - Streams API
Day 40 - Optional and New Date/Time API		Day 40 - Optional and New Date/Time API
Day 41 - JDBC and Database Basics		Day 41 - JDBC and Database Basics
Day 42 - CRUD Operations with JDBC		Day 42 - CRUD Operations with JDBC
Day 43 - Introduction to JavaFX		Day 43 - Introduction to JavaFX
Day 44 - JavaFX UI Controls		Day 44 - JavaFX UI Controls
Day 45 - Event Handling in JavaFX		Day 45 - Event Handling in JavaFX
Day 46 - Introduction to Servlets		Day 46 - Introduction to Servlets
Day 47 - JSP and Web Basics		Day 47 - JSP and Web Basics
Day 48 - REST APIs with Java		Day 48 - REST APIs with Java
Day 49 - Design Patterns		Day 49 - Design Patterns
Day 50 - Capstone Project		Day 50 - Capstone Project
CODE_OF_CONDUCT.md		CODE_OF_CONDUCT.md
CONTRIBUTING.md		CONTRIBUTING.md
License		License
README.md		README.md
SECURITY.md		SECURITY.md

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Java in 50 Days - Complete Learning Journey

Welcome to the comprehensive Java learning repository! This repository is designed to take you from a complete beginner to an intermediate Java developer in 50 days.

🎯 What You'll Learn

This course covers everything from basic syntax to advanced concepts including:

Java fundamentals and syntax
Object-oriented programming
Data structures and algorithms
File handling and I/O
Collections framework
Exception handling
Multithreading and concurrency
Java 8+ features (Streams, Lambda expressions)
Database connectivity
Web development basics
And much more!

📚 Course Structure

Each day contains:

Java source files with practical examples
README.md explaining the concepts covered
Exercises to reinforce learning
Best practices and tips

🚀 Getting Started

Prerequisites: Make sure you have Java JDK 8 or higher installed
IDE: Use any Java IDE (IntelliJ IDEA, Eclipse, VS Code with Java extensions)
Learning Path: Start from Day 01 and progress sequentially
Practice: Complete the exercises in each day's folder

📅 Daily Progress

Day	Topic	Description
01-10	Java Basics	Variables, data types, operators, control flow
11-20	Object-Oriented Programming	Classes, objects, inheritance, polymorphism
21-30	Advanced Java	Collections, exceptions, file I/O
31-40	Modern Java	Streams, lambda expressions, functional programming
41-50	Real-world Applications	Database, web development, design patterns

🛠️ Setup Instructions

Clone this repository
Install Java JDK (version 8 or higher)
Set up your preferred IDE
Start with Day 01 and work through each day

📝 How to Use This Repository

Each day's folder contains complete working examples
Read the README.md first to understand the concepts
Run the Java files to see the output
Complete the exercises provided
Review and experiment with the code

🤝 Contributing

We welcome contributions from everyone! Whether you're a beginner or an experienced developer, there are many ways to help improve this learning resource.

📖 Please read our CONTRIBUTING.md file for detailed guidelines on how to contribute.

Quick ways to contribute: