Inspectopedia
 
2024.3

'Map' can be replaced with 'EnumMap'

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Last modified: 03 December 2024

Reports instantiations of java.util.Map objects whose key types are enumerated classes. Such java.util.Map objects can be replaced with java.util.EnumMap objects.

java.util.EnumMap implementations can be much more efficient because the underlying data structure is a simple array.

Example:

After the quick-fix is applied: