Retrieving objects from a HashMap using java

Suppose开发者_运维百科 that you have:

Map<something of enum type, Object>;

If you know the enum, how do you gain access to the ObjecT?

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For enums it works the same way as for maps in general:

Object value = map.get(enumKey);

Note that with enum keys, it is recommended to use an EnumMap instead of HashMap.

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Use get:

Object result = map.get(key);

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http://download.oracle.com/javase/tutorial/java/javaOO/enum.html

Enums are objects in java. As such, they can be used as keys in the get method.