To Demonstrate the Calling of Constructor

Here is a Java Program to Demonstrate the Calling of Constructor.

// Create a super class.
class A {
  A() { 
    System.out.println("Inside A's constructor.");
  }
}

// Create a subclass by extending class A.
class B extends A {
  B() {
    System.out.println("Inside B's constructor.");
  }
}

// Create another subclass by extending B.
class C extends B {
  C() {
    System.out.println("Inside C's constructor.");
  }
}
  
class CallingCons {
  public static void main(String args[]) {
    C c = new C();
  }
}

Output of Above Java Program
Inside A's constructor.
Inside B's constructor.
Inside C's constructor.