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Q. What is the purpose of the hashCode() method? Ans. The hashCode() method generates a unique integer for an object, aiding in efficient data retrieval in hash-based collections. Used in hash-based collections like HashMap and HashSet for quick data access. Returns an integer value, which is the hash code of the object. Two equal objects must have the same hash code (consistent with equals()).
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Senior Java Developer

Interviewed at CGI

3.7★
Sep 24, 2025

Q. What is the purpose of the hashCode() method? Ans. The hashCode() method generates a unique integer for an object, aiding in efficient data retrieval in hash-based collections. Used in hash-based collections like HashMap and HashSet for quick data access. Returns an integer value, which is the hash code of the object. Two equal objects must have the same hash code (consistent with equals()).

Timeframe - Please return within 72 hours. Please upload your finished product & send us the link to access it. In this technical challenge, you will build a SpringBoot web application that integrates with a PostgreSQL database and uses Docker to run in a container. The application should have a REST API that allows users to perform CRUD (create, read, update, delete) operations on a data model representing a simple e-commerce platform. The REST API should be defined using OpenAPI.
avatar

Senior Java Developer

Interviewed at TeamViewer

3.4★
Jan 29, 2024

Timeframe - Please return within 72 hours. Please upload your finished product & send us the link to access it. In this technical challenge, you will build a SpringBoot web application that integrates with a PostgreSQL database and uses Docker to run in a container. The application should have a REST API that allows users to perform CRUD (create, read, update, delete) operations on a data model representing a simple e-commerce platform. The REST API should be defined using OpenAPI.

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