Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

The Java ecosystem is constantly evolving, and the inability to directly use virtual threads with parallel streams is likely a temporary limitation. As virtual threads mature, we can expect better ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...