Using lambdas and CompletableFuture to improve reactive applications

The Java language has always had a reputation for being a verbose language. However, since the advent of lambdas, this issue has improved a lot.

We can use lambdas and bring CompletableFuture to the party to improve not only the coding but also the behavior of reactive applications. This recipe shows you how to do this.

Getting ready

Let's first add our Jakarta EE 8 dependency:

    <dependency<
        <groupId<javax</groupId<
        <artifactId<javaee-api</artifactId<
        <version<8.0</version<
        <scope<provided</scope<
    </dependency<

...