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Showing content from https://github.com/pmd/pmd/issues/1164 below:

[java] ClassNamingConventions suggests to add Util for class containing only static constants · Issue #1164 · pmd/pmd · GitHub

Affects PMD Version:

6.4.0

Rule:
ClassNamingConventions

Description:

A class containg only static constants triggers violation that it should be renamed to end with either Utils or Helper

Code Sample demonstrating the issue:

public final class StringConstants {
    public static final String YES = "Y";
    public static final String NO = "N";
    private StringConstants(){
    }
}

Error Message:

The utility class name 'StringConstants' doesn't match '[A-Z][a-zA-Z0-9]+(Utils?|Helper)'

Running PMD through: Maven

Other Info

You can reproduce this issue in the unit test by adding this entry

<test-code>
        <description>Class containing constants</description>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
            public final class StringConstants {
                public static final String YES = "Y";
                public static final String NO = "N";
                private StringConstants(){
                }
            }
            ]]></code>
    </test-code>

to file : ClassNamingConventions.xml

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