Difference between terminal and intermediate operations in Streams.

Intermediate Operations

• Lazy: They are not executed until a terminal operation is called.
• Return Type: They return a new Stream.
• Examples: filter(), map(), sorted(), distinct().

Terminal Operations

• Eager: They trigger the processing of the stream pipeline.
• Return Type: They return a non-stream result (List, Optional, long, void).
• Examples: collect(), forEach(), count(), reduce(), findFirst().