83 lines
2.0 KiB
Plaintext
83 lines
2.0 KiB
Plaintext
== Why is this an issue?
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In Java, an enum is a special data type that allows you to define a set of constants.
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Nested enum types, also known as inner enum types, are enum types that are defined within another class or interface.
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Nested enum types are implicitly static, so there is no need to declare them `static` explicitly.
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=== Noncompliant code example
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[source,java,diff-id=1,diff-type=noncompliant]
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----
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public class Flower {
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static enum Color { // Noncompliant; static is redundant here
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RED, YELLOW, BLUE, ORANGE
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}
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// ...
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}
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----
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=== Compliant solution
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[source,java,diff-id=1,diff-type=compliant]
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----
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public class Flower {
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enum Color { // Compliant
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RED, YELLOW, BLUE, ORANGE
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}
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// ...
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}
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----
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== Resources
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* https://docs.oracle.com/javase/specs/jls/se20/html/jls-8.html#jls-8.9[Java Language Specification-8.9]
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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=== Message
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Remove this redundant "static" qualifier; nested enum types are implicitly static.
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=== Highlighting
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Primary Location: the 'static' keyword
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Secondary Location: the 'enum' keyword
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'''
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== Comments And Links
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(visible only on this page)
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=== on 31 Mar 2015, 15:09:56 Nicolas Peru wrote:
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\[~ann.campbell.2]could be nice to add a link or a quote from the jls : \http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.9
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____
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Nested enum types are implicitly static. It is permissible to explicitly declare a nested enum type to be static.
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____
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=== on 31 Mar 2015, 17:46:06 Ann Campbell wrote:
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\[~nicolas.peru] why would we quote the docs as saying it's permissible to do exactly what this rule says not to do?
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=== on 1 Apr 2015, 08:42:30 Nicolas Peru wrote:
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Then let's just keep the first part of the sentence :
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____
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Nested enum types are implicitly static.
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____
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point is to refer to the correct section of the JLS to let user know we did not invent this.
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=== on 1 Apr 2015, 17:06:42 Ann Campbell wrote:
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Done [~nicolas.peru]
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endif::env-github,rspecator-view[]
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