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HashMap vs EnumMap

HashMap vs EnumMap

EnumMap was introduced in Java along with JDK 5 updates which is specialized Map implementation designed and optimized for using Java Enum as key. Java is having HashMap and lots of other concrete implementation of Map interface. So it is natural to ask question around EnumMap and other maps in interview. Most popular in all of these are HashMap vs EnumMap. Here we will be discussing differences and similarities of these two maps.

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EnumMap in Java

EnumMap in Java

EnumMap is specialized Map implementation designed and optimized for using Java Enum as key. EnumMap in Java is added on JDK  5 release. There are some similarities as well as differences between EnumMap and HashMap which you can find hereFollowings are the features of EnumMap.

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