Demystifying the Thread Lifecycle in Java: A Comprehensive Guide

source : interviewbit.com

Introduction:
In the realm of multithreading, understanding the lifecycle of threads is crucial for Java developers. Threads play a vital role in concurrent programming, enabling the execution of multiple tasks simultaneously. In this comprehensive guide, we’ll delve deep into the Thread Lifecycle in Java, breaking down each stage and providing concise, code-rich examples for clarity.

Thread Lifecycle Overview:
The lifecycle of a thread in Java consists of six distinct stages, each serving a specific purpose. These stages are crucial to comprehend, as they dictate the behavior and flow of concurrent execution within a Java program.

1. New:
The thread begins its journey in the “New” state, where it exists before the start() method is invoked. Instantiating a thread does not necessarily initiate its execution. Developers often create threads and prepare them for execution, but the actual start of the thread is deferred until the start() method is called.

Thread thread = new Thread(() -> {
    // Thread logic
});

2. Runnable:
The “Runnable” state is entered after invoking the start() method. In this state, the thread is ready to run, but it may not receive CPU time immediately. The Java…