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Senior Java Developer Interview Questions

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5,537 senior java developer interview questions shared by candidates

Write a JavaScript / HTML program that lets the user open a CSV file from disk, displays it in a text box, processes it, and displays the output in another text box. ... Write a Java-based program (command line) that reads text from a file, splits it into words at spaces and newline characters and constructs an (unbalanced) binary tree where each leaf node represents a unique word. ...
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Senior Java Developer

Interviewed at NavVis

4.3★
Apr 23, 2019

Write a JavaScript / HTML program that lets the user open a CSV file from disk, displays it in a text box, processes it, and displays the output in another text box. ... Write a Java-based program (command line) that reads text from a file, splits it into words at spaces and newline characters and constructs an (unbalanced) binary tree where each leaf node represents a unique word. ...

Concurrency: The interview included questions on concurrency, which assessed my understanding of handling multiple threads simultaneously. Thread Management: Questions on thread management were posed to evaluate my knowledge of creating, controlling, and managing threads. Executor Service: The discussion included Executor Service, emphasizing my familiarity with this framework for managing threads in a clean and efficient manner. Map Interface: I was asked about the Map interface, which tested my ability to work with key-value pairs and different implementations of maps. HashCode and Equals Methods: There were questions on hashCode and equals methods, focusing on their importance in ensuring the correct behavior of hash-based collections.
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Senior Java Developer

Interviewed at Deutsche Börse Group

4★
Jun 11, 2024

Concurrency: The interview included questions on concurrency, which assessed my understanding of handling multiple threads simultaneously. Thread Management: Questions on thread management were posed to evaluate my knowledge of creating, controlling, and managing threads. Executor Service: The discussion included Executor Service, emphasizing my familiarity with this framework for managing threads in a clean and efficient manner. Map Interface: I was asked about the Map interface, which tested my ability to work with key-value pairs and different implementations of maps. HashCode and Equals Methods: There were questions on hashCode and equals methods, focusing on their importance in ensuring the correct behavior of hash-based collections.

1) Can you tell something about the most challenging project in your recent experience? 2) You received a task with hard deadline in 3 days, which was probably under estimated. What would you do? 3) Something orange which sounds like parrot, what is it?
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Senior Java Developer

Interviewed at Kyriba Corp.

4.1★
Mar 7, 2021

1) Can you tell something about the most challenging project in your recent experience? 2) You received a task with hard deadline in 3 days, which was probably under estimated. What would you do? 3) Something orange which sounds like parrot, what is it?

Some coding skills, Java 8 streams, Fibonacci algorithms, equals, and hashcode. Custom implementation of in-memory cache with LRU. It looks like they're very rudimentary in questions. They ask questions from very low level to high level. Expecting APIs to be precise and solution in 10 mins time. Their attitude is the key. Hard to work with them at least for me.
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Senior Java Software Engineer

Interviewed at Foot Locker

3.6★
Feb 28, 2018

Some coding skills, Java 8 streams, Fibonacci algorithms, equals, and hashcode. Custom implementation of in-memory cache with LRU. It looks like they're very rudimentary in questions. They ask questions from very low level to high level. Expecting APIs to be precise and solution in 10 mins time. Their attitude is the key. Hard to work with them at least for me.

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