Deloitte | Java Full Stack Consultant | First Round

Round 1

Questions:

1. Coding Question: Valid Anagram
2. Find the highest odd element using streams:

   int odd_highest = list.stream().filter(n -> n % 2 != 0).sorted(Comparator.reverseOrder()).findFirst();

3. Collect duplicate elements present in the list using streams:

   List<Integer> li = list.stream().filter(i -> Collections.frequency(list, i) > 1).collect(Collectors.toList());

4. Theory Questions:
   • Explain method overriding.
   • Discuss exceptions (focused on priority).
   • Explain serializable and provide a marker interface example.
   • Differences between HashMap and ConcurrentHashMap.
   • Spring Boot: Provide an example of dependencies and explain dependency injection.
   • Microservices: Explain circuit breaker and design patterns used in projects.