Here is an example of using the Version class from the Apache Commons IO library to retrieve the version of the library:

import org.apache.commons.io.IOUtils;
import org.apache.commons.io.output.StringBuilderWriter;
import org.apache.commons.io.Version;

System.out.println("Apache Commons IO version: " + Version.getVersion());

In this example, the static method getVersion() from the Version class is used to retrieve the version of the Apache Commons IO library. The version is then printed to the console using the System.out.println() method.

It's important to note that this class is not part of the org.apache.commons.io package but the org.apache.commons.io.Version package.