Ikm Java 8 Test Updated -
List<String> list = Arrays.asList("a", "b"); Stream<String> stream = list.stream().filter(s -> s.length() > 5); // No terminal operation The updated test asks: What is the state of the stream after line 2? Many incorrectly think filtering occurs immediately. It does not. The pipeline is not executed until a terminal operation like count() or collect() is invoked. A tricky question might present:
For the diligent developer, this is good news. It means that mastery of Java 8’s core paradigms will be rewarded with a high percentile score. By focusing your preparation on the areas outlined above—particularly custom collectors, time-zone handling, and parallel stream safety—you can confidently tackle the updated test and stand out to employers. ikm java 8 test updated
Map<String, List<Integer>> map = Stream.of("A", "BB", "CCC") .collect(Collectors.groupingBy(s -> String.valueOf(s.length()), Collectors.mapping(String::length, Collectors.toList()))); System.out.println(map); What is the output? A) 1=[1], 2=[2], 3=[3] B) "1"=[1], "2"=[2], "3"=[3] C) 1=[1], 2=[2] D) Compilation error List<String> list = Arrays