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6,028 java senior 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.
avatar

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.

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