1. What is the return type of Class.forName() method? 2. What is the difference between an Inner Class and a Static Nested Class? What is the difference between intermediate and terminal operations on Stream? 3. How to check if Linked List has a loop? 4. Java Microservices and RestAPI 5. Describe the newly added features in Java 8 6. What is the use of Spliterator in Java? 7. Find the complexity of different operations in the Binary tree, Binary Search Tree and AVL tree.
Thread pool, Bean life cycle, Concurrent API's, Locks, Producer consumer Problem, Linked list implementation, Hashmap and Treemap Implementation, Exception Handling, Servlet life cycle, Internal working of Garbage collectors etc
Concurrent hash map
Questions about Spring and Hibernate.
Write a program to brake singleton pattern and how to prevent it. Wirte a program to count the number of occurrences of characters in a String. Write circuit breaker pattern in case of microservices.
Interviewer asked questions on core java, collections, SQL Joins, Design patterns. Some scenario based questions but I did not understand since the interviewer did not that good english. This was though some staffing agency.
Round1: Focus on Microservices: 1. Code for Feign Client Interface 2. Code for Rest Template 3. POST API with all annotations and detailed code. 4. Java8 Features Round 2: 1. String s =null; Sout(s); Sout(s.lenght); What would be the output? 2. How do we prevent nullpointer in above scenario? 3. Java8 Program: Return first employee with a salary greater than 100000 . If no such employee exists, then null is returned. 4. Kafka Partitions and Topics. 5. AWS services used? Round 3: Basic HR questioner.
The design patterns of microservices
Core Java Questions, SpringBoot Annotation, Stream API question, Java
how we handle deployment process in current organisation?
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