Since Checkstyle 8.28
Checks that array initialization do not contain a trailing comma. Rationale: JLS allows trailing commas in arrays and enumerations, but does not allow them in other locations. To unify the coding style, the use of trailing commas should be prohibited.
int[] foo = new int[] {
1,
2
};
The check demands that there should not be any comma after the last element of an array.
String[] foo = new String[] {
"FOO",
"BAR", //violation
}
To configure the check:
<module name="Checker">
<module name="TreeWalker">
<module name="NoArrayTrailingComma"/>
</module>
</module>
Which results in the following violations:
String[] foo1 = {
"FOO", // OK
"BAR", // violation
};
String[] foo2 = { "FOO", "BAR", }; // violation
String[] foo3 = {
"FOO", // OK
"BAR" // OK
};
String[] foo4 = { "FOO", "BAR" }; // OK
All messages can be customized if the default message doesn't suit you. Please see the documentation to learn how to.
com.puppycrawl.tools.checkstyle.checks.coding