object instantiation vs construction
Object Creation (Instantiation) and Initialization (Construction) are
different things in Java. Construction follows object creation.
Object Creation is the process to create the object in memory and
returning its handler.
Java provides “new” keyword for object creation.
Initialization is the process of setting the initial/default values
to the members.
Constructor is used for this purpose. If we don't provide any constructor,
Java provides one default implementation to set the default values according
to the member data types.