Java Software Engineer Interview Questions

3,075 java software engineer interview questions shared by candidates

Below are the technical questions asked me during the interview 1. HashMap vs TreeMap 2. Deadlock situation, how do you avoid it ? 3. Multiple Inheritance in java(Diamod Problem) 4. How do you maintain two different Databases in springboot application 5. About Kafka offset(earliest, latest, default configurations) 6. Marker interface in java
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Software Engineer - Java Developer

Interviewed at Synechron

4.1
Jan 8, 2025

Below are the technical questions asked me during the interview 1. HashMap vs TreeMap 2. Deadlock situation, how do you avoid it ? 3. Multiple Inheritance in java(Diamod Problem) 4. How do you maintain two different Databases in springboot application 5. About Kafka offset(earliest, latest, default configurations) 6. Marker interface in java

How Do you implement observer design pattern? Which design patterns do you know? Which are the collections interfaces? Given the fibonacci sequence array, sort the array with all the odd numbers at the begining and the non even numbers at the end. Don’t use any temp array.
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Senior Java Software Engineer

Interviewed at EPAM Systems

4
Aug 11, 2021

How Do you implement observer design pattern? Which design patterns do you know? Which are the collections interfaces? Given the fibonacci sequence array, sort the array with all the odd numbers at the begining and the non even numbers at the end. Don’t use any temp array.

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