Creating New Constructor In Child Class Which Is Not In Parent Class

I've a parent class with a argument constructor like below(a sample code)

public class Parent {
Parent(String name) {
System.out.println(name);
}
public static void main(String[] args) {
}
}

Also I've child.class which extends Parent.class as shown below,

public class child extends Parent {
child(String name) {
super(name);
}
}

Now, I want create/modify the constructor which is in child, by taking "int i" as an input instead of "String name". How can I do that? Run time I want to execute child constructor not a parent constructor.

Condition is: Without making any changes to the Parent class