Resource4J Core Library provides all resource4j basic APIs as well as their default implementations.
'com.github.resource4j:resource4j-core:2.0.2'
<dependency>
<groupId>com.github.resource4j</groupId>
<artifactId>resource4j-core</artifactId>
<version>2.0.2</version>
</dependency>
<dependency org="com.github.resource4j" name="resource4j-core" rev="2.0.2"/>
"com.github.resource4j", "resource4j-core", "2.0.2"