🧵 Java Multi-Threading

Master Concurrent Programming in Java

Maximize CPU utilization with threads, synchronization, and parallel execution

Concepts · Examples · Get Started

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📖 Table of Contents

• About
• Concepts
• Thread Lifecycle
• Examples
• Technologies
• Getting Started
• Contact

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🎯 About

Multithreading is a Java feature that allows concurrent execution of two or more parts of a program for maximum CPU utilization. This repository covers everything from thread basics to advanced synchronization techniques.

Why Multithreading?

• ⚡ Performance - Utilize multiple CPU cores
• 🔄 Responsiveness - Keep UI responsive during heavy tasks
• 📊 Efficiency - Better resource utilization
• 🎯 Parallelism - Execute multiple tasks simultaneously

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💡 Concepts

Concept	Description
Thread	Lightweight process, smallest unit of execution
Runnable	Interface for creating threads
Synchronized	Prevent race conditions
Deadlock	Circular wait condition
Thread Pool	Reusable thread collection
Executor	Framework for thread management

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🔄 Thread Lifecycle

                    ┌─────────────────────────────────────────┐
                    │                                         │
                    ▼                                         │
┌──────────┐    ┌──────────┐    ┌──────────┐    ┌──────────┐ │
│   NEW    │───►│ RUNNABLE │───►│ RUNNING  │───►│TERMINATED│ │
└──────────┘    └──────────┘    └────┬─────┘    └──────────┘ │
     │              ▲                │                        │
     │              │                ▼                        │
     │              │         ┌──────────┐                    │
     │              └─────────│ BLOCKED/ │                    │
     │                        │ WAITING  │                    │
     │                        └──────────┘                    │
     │                                                        │
     └────────────────────────────────────────────────────────┘

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📚 Examples

Creating Threads

// Method 1: Extending Thread class
class MyThread extends Thread {
    public void run() {
        System.out.println("Thread running: " + getName());
    }
}

// Method 2: Implementing Runnable
class MyRunnable implements Runnable {
    public void run() {
        System.out.println("Runnable running");
    }
}

// Method 3: Lambda Expression (Java 8+)
Thread t = new Thread(() -> System.out.println("Lambda thread"));

Synchronization

class Counter {
    private int count = 0;
    
    public synchronized void increment() {
        count++;
    }
    
    public int getCount() {
        return count;
    }
}

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🛠️ Technologies

Technology	Purpose
	Java 8+
	Eclipse IDE
	IntelliJ IDEA

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🚀 Getting Started

# Clone the repository
git clone https://github.com/Shubh2-0/Multi-Threading.git
cd Multi-Threading

# Open in your IDE
# Run the examples and experiment!

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📬 Contact

Shubham Bhati - Java Developer

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⭐ Star this repository to support multithreading learning!

Keywords: Java Multithreading Concurrency Thread Synchronization Deadlock Runnable Executor Thread-Pool Parallel-Programming