Java Senior Interview Questions

6,023 java senior interview questions shared by candidates

one was String manipulation using map and other one was using java stream api.Solved both,Started asking questions from kafka,which i had no in hand experience.The questions were all from google.Did not dive into basics.
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Senior Java Developer

Interviewed at PureSoftware

3.6
Jun 8, 2023

one was String manipulation using map and other one was using java stream api.Solved both,Started asking questions from kafka,which i had no in hand experience.The questions were all from google.Did not dive into basics.

Round lasts for 60 mins and it contains 3 System design scenarios and we need to answer how do we handle those scenarios - 10 mins . Scenarios will be pretty much like how do you save cost for the company and how do you scale resources . Next session I had 6 questions on Object oriented design and production issues. Next session has 2 leetcode problems one is on hashmap and the other is on finding the word in matrix .
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Senior Java Developer

Interviewed at Citi

3.6
Nov 17, 2025

Round lasts for 60 mins and it contains 3 System design scenarios and we need to answer how do we handle those scenarios - 10 mins . Scenarios will be pretty much like how do you save cost for the company and how do you scale resources . Next session I had 6 questions on Object oriented design and production issues. Next session has 2 leetcode problems one is on hashmap and the other is on finding the word in matrix .

-- All bookish questions and asking example for the same. no proper practical knowledge Question: how does arraylist works internally Answer: as like array but it grows. and if the default size is reached, another block of memory been allocated. Question: Giving a final variable and modifying the value to it. Answer: it's not possible to modify the value.Even then interview asking me the ways to modify the value. All design patterns: side car, bulk head. Question : to print pattern in java 544333222211111 input will be 5 Answer : Done.
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Senior Java Developer

Interviewed at Xoriant

3.9
Nov 27, 2021

-- All bookish questions and asking example for the same. no proper practical knowledge Question: how does arraylist works internally Answer: as like array but it grows. and if the default size is reached, another block of memory been allocated. Question: Giving a final variable and modifying the value to it. Answer: it's not possible to modify the value.Even then interview asking me the ways to modify the value. All design patterns: side car, bulk head. Question : to print pattern in java 544333222211111 input will be 5 Answer : Done.

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