package test;
public class FatherClass {
    public FatherClass() {
        System.out.println("FatherClass Create");
    }
}

package test;
import test.FatherClass;
public class ChildClass extends FatherClass {
    public ChildClass() {
        System.out.println("ChildClass Create");
    }
    public static void main(String[] args) {
        FatherClass fc = new FatherClass();
        ChildClass cc = new ChildClass();
    }
}