What Are Java Streams and How Do You Use Them for Data Processing?

What Are Java Streams and How Do You Use Them for Data Processing?

Java Streams simplify data processing by allowing you to operate on collections in a functional style.

Functional Programming with Streams

Streams provide an easy way to apply transformations, filters, and collectors to data sets.

Example of Stream Operations

Using Streams, you can filter, map, and collect data in one continuous flow.

Example Code

            List names = List.of("Alice", "Bob", "Charlie");
            List result = names.stream()
                .filter(name -> name.startsWith("A"))
                .collect(Collectors.toList());
            

This code filters names that start with the letter “A”.