Java 8 Streams introduced elegant ways to work with collections, but also a few traps.
Watch out for:
- Lazy execution and debugging challenges
- Shared mutable state across threads
- Inefficient collectors in large datasets
Code sample:
List<String> results = items.stream() .filter(s -> s.startsWith("a")) .collect(Collectors.toList());
When used right, streams can simplify your code — but test your assumptions!