What are the differences between Java threads and futures?

What are the differences between Java threads and futures?

Java threads are low-level constructs for concurrent execution, while futures represent the result of an asynchronous computation.

Can you explain how to use futures in Java?

Sure! You can use the ExecutorService to submit tasks that return a Future object, which you can use to retrieve the result later.

When should I use threads instead of futures?

Use threads when you need fine-grained control over execution and lifecycle. Futures are better for managing asynchronous tasks.

Are there any performance differences between using threads and futures?

Yes, futures can be more efficient for managing multiple tasks, as they handle thread pooling and reduce overhead.