Talk about the OOP in Java
Java Software Engineer Interview Questions
3,072 java software engineer interview questions shared by candidates
Difference between abstract class and interface.
5 min self-introduction in English.
Basic Java and spring questions
Talk about the B+ tree? What's there difference between B+tree and other tree data structures? What is the application of b+tree?
I don't remember exact tasks but all of them were pretty basic, nothing extraordinary
Customized object as HashMap key
SQL : Given City and School table, print cities and count of school in those cities where count is more than 10
1. Singleton Class, Create the Singleton Class in 2 ways.(direct and thread safe) 2. Hash Map implementation. 3. Thread related questions, Sync, Life Cycles, States. 4. ways of creating the thread, which do you prefer and why ? 5. Wait vs Sleep 6. Serialization. 7. Comparable vs Comparator 8. Rest API, Service, Annotation, Repository, JPA, Junit
First Round: Hacker Ranker(2 sets of Programs Medium Level and MCQ Code Questions) Second Round: Technical Interview Questions asked are Internal workings of Hashmap example based on it, no of occurrence of a character from an array of characters, Java inheritance in-depth Understanding, MultiThreading, and Exception Handling
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