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Java Spring Basics Using the MVC Architecture Add a CategoryController

Posted by Daniel Phillips
Daniel Phillips
26,940 Points

Can GifRepository.findByCategoryId() be rewritten as functional using stream?

Here's how I did it.

import java.util.stream.Collectors;
    public List<Gif> findByCategoryId(int id) {
        return ALL_GIFS
                .stream()
                .filter(gif -> gif.getCategoryId() == id)
                .collect(Collectors.toList());
    }

1 Answer

Michael Newman
Michael Newman
39,508 Points
Michael Newman
Michael Newman
39,508 Points

You definitely can! I believe this course came out not long after Java 8 (which introduces streams, lambdas, etc. as far as I know). I think streams are much more common now as the functional programming paradigm is more popular in the Java world now than it used to be. One of the coolest aspects of programming in my opinion is how many different solutions there are to problems depending on how you think about something.

Cheers and happy coding!