Tech Interview Guide

How to Create and Use a HashSet in Java to Store Unique Items?

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Java

Learn how to effectively use a HashSet in Java to store unique items, with detailed examples and explanations. This guide will help you understand the working of HashSet and its practical applications in Java programming.

How Can You Represent a Directory Structure Using Collections in Java?

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Discover how to represent a directory structure using collections in Java with detailed examples. Learn to model hierarchical structures using different collections like List, Map, and Set, and see practical code implementations.