In Java, which interface is used to create a thread?

In Java, the Runnable interface is used to create a thread in a way that allows for greater flexibility and decouples the task being executed from the thread itself. By implementing the Runnable interface, you define the code that should run when a thread is started in the run() method. This approach provides the ability to create a thread without having to extend the Thread class, enabling the use of multiple inheritance for class design.

When you implement Runnable, you can pass an instance of your class to a Thread object when you create it. This allows the Java Runtime to invoke the run() method when the thread starts. This method can be instantiated and executed within the context of a Thread, which executes the code defined in run() concurrently.

Moreover, using Runnable is beneficial in scenarios where you want to share the same code across multiple threads with different behaviors, or when you want to implement a multi-threading structure without being restricted by Java’s single inheritance model.

In comparison, the Thread class also serves to create threads by directly extending it, but it is less versatile as it restricts you from extending any other class. Callable is similar to Runnable but can return a result or throw a checked exception, which is useful in some contexts, however,