2026 Rank Predictor NEET and JEE Main Rank Calculator Estimate your percentile, expected All India Rank and category rank from your marks. NEET UG JEE Main NEET Marks Enter your NEET marks out of 720. Category General / UR GEN-EWS OBC-NCL SC ST ...
Java Stream API — Quick Guide The Stream API was introduced in Java 8 . It is used to process collections of data in a declarative way using operations such as filter() , map() , sorted() , and collect() . Basic flow List<Integer> numbers = Arrays.asList(10, 15, 20, 25, 30); List<Integer> result = numbers.stream() .filter(n -> n > 20) .map(n -> n * 2) .collect(Collectors.toList()); System.out.println(result); Output: [50, 60] Think of it as: Collection → Stream → Intermediate operations → Terminal operation → Result Important Stream API operations Operation Purpose Example filter() Select elements filter(x -> x > 10) map() Transform elements map(x -> x * 2) sorted() Sort elements sorted() distinct() Remove duplicates distinct() limit() Take first N limit(5) skip() Skip first N skip(2) forEach() Process elements forEach(System.out::println) collect() Convert to collection/result collect(Collectors.toList()) count() Count ele...