Override super class constructor with base class constructor using Reflection

I have a scenario in which I want to Override a constructor creation of a base class with child class based on some condition from a class.

So following are the classes: 1) Ref 2) Other (Base class) 3) OtherImpl ( Child class of Other) 4) RefWorking (Main class)

Class Ref is calling constructor of Other class, I want to override this constructor with constructor of OtherImpl.

class Ref {

private String s = "Original";

private Other o;

public Ref() {
}

public void method1(int a) {
    o = new Other();
    System.out.println("Method 1 : "+ s);
}

private void method2(String a) {
    System.out.println("Method 2 : "+ a);
}

}

class Other {

public Other() {
    System.out.println("Default Other Constructor");
}

}

class OtherImpl extends Other {

public OtherImpl() {
    System.out.println("Reflection Constructor");
}

}

public class RefWorking {

public static void main(String args[]) throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchFieldException {
Ref r = new Ref();

Class c = r.getClass();

OtherImpl oi = new OtherImpl();

Field f = c.getDeclaredField("o");

f.setAccessible(true);

f.set(r, oi);

r.method1(10);

} }

It is giving following output:

Default Other Constructor Reflection Constructor Default Other Constructor Method 1 : Original

But my expected output is : Default Other Constructor Reflection Constructor Default Other Constructor Reflection Constructor Method 1 : Original