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Alex Rivera
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I have a map of constants, like this: private static Map<String, Character> _typesMap = new HashMap<String, Character>() { { put ("string", 'S'); put ("normalizedString", 'N'); put ("token", 'T'); // (...) } Do I really need to use Collections.unmodifiableMap() to create this map? What is the advantage of using it? Are there any disadvantages of not using it, besides the obvious fact that they are not really becoming constant?
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