Since Checkstyle 5.8
Checks that interface type parameter names conform to a specified pattern.
name | description | type | default value | since |
---|---|---|---|---|
format | Specifies valid identifiers. | Pattern | "^[A-Z]$" |
5.8 |
To configure the check:
<module name="Checker"> <module name="TreeWalker"> <module name="InterfaceTypeParameterName"/> </module> </module>
Code Example:
interface FirstInterface<T> {} // OK interface SecondInterface<t> {} // violation, name 't' must match pattern '^[A-Z]$'
An example of how to configure the check for names that are only a single letter is:
<module name="Checker"> <module name="TreeWalker"> <module name="InterfaceTypeParameterName"> <property name="format" value="^[a-zA-Z]$"/> </module> </module> </module>
Code Example:
interface FirstInterface<T> {} // OK interface SecondInterface<t> {} // OK interface ThirdInterface<type> {} // violation, name 'type' must // match pattern '^[a-zA-Z]$'
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.naming