EnumMap: Enhancing Java Enum Types with Mapping

EnumMap in Java is a specialized Map implementation designed for use with keys of a single enum type. It offers performance advantages over HashMaps, including compactness and efficient access. EnumMap ensures that keys are natural orders of the enum, facilitating speedy lookups and iteration. This map is null-averse for keys, permitting null values but not null keys. It's ideal for enum-keyed data structures, offering predictable iteration order and efficient memory footprint.
This example demonstrates using EnumMap to map enum keys to string values, showcasing its simplicity and efficiency. The map is populated with states of a process and their descriptions, then iterated to print each state and description, highlighting EnumMap's order and speed.

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