Java Enums and EnumSet

📘 Java 👁 45 views 📅 Dec 01, 2025

⏱ Estimated reading time: 1 min

Enums represent fixed sets of related constants, such as directions or statuses. Unlike traditional constant variables, enums are full-fledged classes that can include fields, constructors, and methods. They improve type safety and reduce errors caused by invalid values. Java also provides EnumSet and EnumMap, optimized collections for enum types. These structures are extremely efficient, storing values internally as bit vectors. They are ideal for situations requiring fast operations with constant sets.

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