What are some advanced usage patterns for Java Streams?

What are some advanced usage patterns for Java Streams?

Java Streams offer powerful features like filtering, mapping, and reducing. You can also use collectors for grouping and partitioning.

Can you give me an example of using collectors?

Sure! You can use Collectors.groupingBy() to group elements by a specific property. For instance, grouping a list of employees by department.

How about combining multiple operations in a single stream?

You can chain operations like filter(), map(), and reduce() together. For example, filtering a list, transforming it, and then summing the results.

What are some performance considerations when using streams?

Streams can be more efficient than traditional loops, but be cautious with large data sets. Parallel streams can improve performance but may introduce overhead.