35 lines
655 B
Plaintext
35 lines
655 B
Plaintext
When all the keys of a Map are values from the same enum, the ``++Map++`` can be replaced with an ``++EnumMap++``, which can be much more efficient than other sets because the underlying data structure is a simple array.
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== Noncompliant Code Example
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----
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public class MyClass {
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public enum COLOR {
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RED, GREEN, BLUE, ORANGE;
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}
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public void mapMood() {
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Map<COLOR, String> moodMap = new HashMap<COLOR, String> ();
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}
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}
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----
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== Compliant Solution
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----
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public class MyClass {
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public enum COLOR {
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RED, GREEN, BLUE, ORANGE;
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}
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public void mapMood() {
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EnumMap<COLOR, String> moodMap = new EnumMap<> (COLOR.class);
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}
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}
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----
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