Log4j-api

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>(2,)</version>
</dependency>

compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '(2,)'

compile 'org.apache.logging.log4j:log4j-api:(2,)'

libraryDependencies += "org.apache.logging.log4j" % "log4j-api" % "(2,)"

<dependency org="org.apache.logging.log4j" name="log4j-api" rev="(2,)"/>

@Grapes(
            @Grab(group='org.apache.logging.log4j', module='log4j-api', version='(2,)')
        )

[org.apache.logging.log4j/log4j-api "(2,)"]

'org.apache.logging.log4j:log4j-api:jar:(2,)'