f.ceylon

shared T f<T>(T t){
  return t;
}

G.java

package tmp2;

import tmp2.f_;
import ceylon.language.Integer;

public class G {
    public static void g() {
        System.out.println(f_.f(Integer.$TypeDescriptor$, Integer.instance(1)));
    }
}

module.ceylon

native ("jvm") module tmp2 "1.0.0" {
    import java.base "7";
}

package.ceylon

package tmp2;

run.ceylon

shared void run() => G.g();

(In case it’s not clear, these should all go in $projectRoot/source/tmp2/, and then you can ceylon compile,run tmp2 from $projectRoot.)