Program to explain Calling super class constructor using super in Java

//  Program to explain Calling super class constructor using super
class  A 
{
A() 
{
 System.out.println("A constructor.");
}
}
class B extends A 
{
B() 
{
 super();
 System.out.println("B constructor.");
}
}
class C extends B 
{
C() 
{
 super();
 System.out.println("C constructor.");
}
}
public class  InheritanceConstructor2 
{
public static void main(String[ ] args) 
{
 C x = new C();
}
}

Output:
A constructor.
B constructor.
C constructor.