What are some examples of asynchronous programming in Java?

What are some examples of asynchronous programming in Java?

Asynchronous programming in Java allows tasks to run concurrently without blocking the main thread. Examples include using CompletableFuture, the ExecutorService, and the Future interface.

Can you explain how CompletableFuture works?

Sure! CompletableFuture is a class that represents a future result of an asynchronous computation. You can create it, complete it manually, and chain multiple tasks using methods like thenApply, thenAccept, and thenCombine.

What is the difference between Future and CompletableFuture?

Future is a blocking way to retrieve results, while CompletableFuture is non-blocking and allows for more complex asynchronous programming patterns.

Can you provide a code example using CompletableFuture?

Certainly! Here's a simple example:

CompletableFuture.supplyAsync(() -> {
    // Simulate a long-running task
    return "Result";
}).thenAccept(result -> {
    System.out.println(result);
});