Write the class whose diagram is shown below and write a driver program (progressively developed) to test the class (verify that all the methods function properly). The default (no-parameter constructor) should initialize the String data member name to " " and numeric data member to zero. The input method should allow the user to input the values of an object's data members.

Then code the definition of the class whose diagram follows. The constructors should allocate the array(data) of Listing object references sized to either 100 elements (the no-parameter constructor) or the number of elements specified by the argument sent to the one-parameter constructor. The method, addListing, will add a new Listing object to the array at index next. The showAll method will output the values of the data members of all the Listing objects. Write a progressively developed driver program to demonstrate that the class functions properly.

Listing String name int age + Listing() + Listing (String, int) + string toString(O) + void input () + void setName (String) + void setAge (String) + String getName (O + int getAge ( )