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Senior Developer Java Interview Questions

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5,296 senior developer java interview questions shared by candidates

1)What is Inheritance and deep dive.2) Jvm heap memory 3) how much memory does integer occupy 4) Exception handling questions how it is applied in parent and child class.5) How can we change the log level of an application in a production environment.6) Access modifiers inside the inheritance Ex: Private method in parent class can this be accessed inside the child class.
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Senior Java Developer

Interviewed at Entain India

3.6★
Dec 5, 2016

1)What is Inheritance and deep dive.2) Jvm heap memory 3) how much memory does integer occupy 4) Exception handling questions how it is applied in parent and child class.5) How can we change the log level of an application in a production environment.6) Access modifiers inside the inheritance Ex: Private method in parent class can this be accessed inside the child class.

How to design Parking lot in Java? How to sort a 10 GB file contains integers on a system which can process only 2 GB resource at a time ? How my Hashmap will look like if I insert employee object in it as key and value and I have overridden hashcode method which returns 1 always and equals method which returns false. how micro services communicates with each other ? What is service discovery ?
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Senior Java Developer

Interviewed at Synechron

4.1★
Sep 6, 2020

How to design Parking lot in Java? How to sort a 10 GB file contains integers on a system which can process only 2 GB resource at a time ? How my Hashmap will look like if I insert employee object in it as key and value and I have overridden hashcode method which returns 1 always and equals method which returns false. how micro services communicates with each other ? What is service discovery ?

Given a string, find the 2nd non-repeating character in the string. Also, throw light upon the time and space complexity of it. Name all sorting algorithms and explain along with their procedures and time complexities. Another coding question related to Dijkstra’s Algorithm.
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Senior Java Developer

Interviewed at UST

3.8★
Jan 5, 2023

Given a string, find the 2nd non-repeating character in the string. Also, throw light upon the time and space complexity of it. Name all sorting algorithms and explain along with their procedures and time complexities. Another coding question related to Dijkstra’s Algorithm.

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