Why is constructor of super class invoked when we declare the object of sub class? (Java)

Question

Consider this code:

class Test {
    Test() {
        System.out.println(\"In constructor of Superclass\");
    }

    int adds(int n1, int n2) {
        ret         


        

Answer 1

Because it will ensure that when a constructor is invoked, it can rely on all the fields in its superclass being initialised.

see 3.4.4 in here