Multithreading

📄️ Introduction to Multithreading

Multithreading allows a program to perform multiple tasks concurrently, improving performance and responsiveness. In Java, threads are lightweight processes that share the same memory space, making them ideal for parallel execution.

📄️ Creating Threads

In Java, there are two primary ways to create threads:

📄️ Thread Lifecycle

In Java, every thread goes through a series of states during its lifetime. Understanding the thread lifecycle is crucial for managing threads effectively.

📄️ Thread Synchronization

Thread synchronization ensures that only one thread can access a shared resource at a time, preventing issues like race conditions and data inconsistency. In Java, synchronization is achieved using the synchronized keyword.

📄️ Inter-Thread Communication

Inter-thread communication allows threads to coordinate their actions by signaling each other. In Java, this is achieved using the wait(), notify(), and notifyAll() methods from the Object class. These methods are typically used in conjunction with synchronization.

📄️ Thread Pools

A thread pool is a collection of pre-created, reusable threads that execute tasks concurrently. Instead of creating a new thread for each task (which can be resource-intensive), thread pools reuse existing threads, improving performance and scalability.

📄️ Concurrent Collections

Concurrent collections are specialized data structures in Java designed to handle multi-threaded environments safely. Unlike traditional collections (e.g., ArrayList, HashMap), concurrent collections ensure thread safety without requiring explicit synchronization.