Runnable

A Runnable in Java represents a task that can be executed concurrently. It is a functional interface with a single run() method that does not return a result. You typically use it to perform background operations such as printing logs, updating caches, or running periodic tasks.

public class RunnableExample {
    public static void main(String[] args) {
        // A Runnable defined with a lambda
        Runnable task = () -> {
            System.out.println("Running in thread: " + Thread.currentThread().getName());
        };

        // Run the task in a separate thread
        Thread thread = new Thread(task);
        thread.start();

        System.out.println("Main thread: " + Thread.currentThread().getName());
    }
}