Your question is Explain Collections vs Streams in Java. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about the difference between Collection and Streams in Java.
Explain how java.util.Collection and java.util.stream.Stream differ in purpose, evaluation, traversal, reuse, and memory behavior. Include a concrete example showing when a Stream pipeline is preferable and when a Collection is the appropriate abstraction.
Keep the answer focused on Java SE APIs and ordinary sequential and parallel stream behavior.
