Understanding wait(), notify(), and notifyAll() vs yield(), join(), and sleep() in Java: A Comprehensive Guide

Thread Synchronization Methods

1. wait()

Purpose: Causes the current thread to wait until another thread invokes notify() or notifyAll() on the same object.

Behaviour: Releases the lock and enters the waiting state.

2. notify()

Purpose: Wakes up one waiting thread.

Behaviour: Only one thread is notified and attempts to acquire the lock.

3. notifyAll()

Purpose: Wakes up all waiting threads.

Behaviour: All threads are notified but only one can acquire the lock at a time.

Thread Control Methods

1.yield()

Purpose: Suggests to the thread scheduler that the current thread is willing to pause.

Behavior: Moves the thread to the runnable state, allowing other threads to run.

2. join()

Purpose: Waits for a specified thread to finish its execution.

Behavior: The calling thread is paused until the target thread completes.

3. sleep()

Purpose: Pauses the current thread for a specified duration.

Behavior: The thread enters a sleeping state for the defined time before becoming runnable again.

Understanding wait(), notify(), and notifyAll() vs yield(), join(), and sleep() in Java: A Comprehensive Guide

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Table of Contents

1. Introduction to Thread Synchronization and Control
2. Deep Dive into wait(), notify(), and notifyAll()
3. Exploring yield(), join(), and sleep()
4. Comparison Between Synchronization and Thread Control Methods
5. When and Where to Use Each Method