What intermediate methods of working with streams do you know?

Intermediate methods in Java Stream API are operations that return a new stream and allow chaining of data processing. They are lazy, meaning they do not execute until a terminal operation is invoked.

Main intermediate methods:

• filter(Predicate) — filters elements based on a condition.
• map(Function) — transforms elements by applying a function.
• flatMap(Function) — transforms each element into a stream and flattens the result.
• distinct() — removes duplicates.
• sorted() / sorted(Comparator) — sorts elements.
• limit(long) — limits the number of elements.
• skip(long) — skips the first N elements.

Example:

List<String> names = Arrays.asList("Anna", "Bob", "Alice", "Brian");
List<String> filtered = names.stream()
    .filter(s -> s.startsWith("A"))
    .map(String::toUpperCase)
    .sorted()
    .collect(Collectors.toList());
// filtered will be ["ALICE", "ANNA"]