What are some examples of using the map function in Java Streams API?

Can you explain how the map function works in Java Streams API?

Sure! The map function in Java Streams API is used to transform each element of a stream into another form. It applies a given function to each element and returns a new stream of the transformed elements.

Can you give me some examples of using the map function?

Absolutely! For instance, if you have a list of integers and you want to square each number, you can use map like this: List<Integer> squared = numbers.stream().map(n -> n * n).collect(Collectors.toList());.

What if I want to convert a list of strings to their lengths?

You can do that too! You would use: List<Integer> lengths = strings.stream().map(String::length).collect(Collectors.toList()); This will give you a list of the lengths of each string.

Are there any other useful methods in the Streams API?

Yes, there are many! Some popular ones include filter, reduce, and forEach, each serving different purposes for stream processing.