What are async APIs in Java and how do they work?

What are async APIs in Java and how do they work?

Async APIs in Java allow for non-blocking operations, enabling better performance in applications by handling tasks concurrently.

Can you give me an example of how to implement an async API in Java?

Sure! You can use the CompletableFuture class to create async methods. Here's a simple example:

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

What libraries or frameworks support async programming in Java?

Popular libraries include Spring WebFlux, Vert.x, and Java's built-in CompletableFuture. They all facilitate async programming.

What are the benefits of using async APIs?

Async APIs improve application responsiveness, resource utilization, and scalability by allowing multiple tasks to run concurrently.