Description: Runnable is an interface in Java that must be implemented by classes whose instances are intended to be executed by a thread. This interface is fundamental in concurrent programming, as it allows defining a task that can be executed in a separate thread, facilitating the simultaneous execution of multiple tasks. By implementing the Runnable interface, developers must override the run() method, which contains the code that will be executed when the thread starts. This separation of task logic and thread management allows for greater flexibility and code reuse. Additionally, Runnable is an alternative to extending the Thread class, allowing a class to extend other classes while still being able to execute code in a thread. This is especially useful in various programming environments, where efficient thread management is crucial for maintaining responsive applications. In summary, Runnable is a key tool in Java application programming, providing a simple and effective way to handle background task execution.
