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Class B extends class A, which extends Object

Upon examination of the program, you will see that the class named A extends the class named Object . You will also see that the class named B extends the class named A .

The class named Polymorph01 is a driver class whose Main method exercises the methods defined in the classes named A and B .

Designed to illustrate method overloading

Once again, this program is not intended to correspond to any particular real-world scenario. Rather, it is a very simple program designed specificallyto illustrate method overloading.

Discussion and sample code

Will discuss in fragments

As usual, I will discuss this program in fragments. A complete listing is provided in Listing 4 near the end of the module.

The class named A

The code in Listing 1 defines the class named A , which explicitly extends Object .

Listing 1 . Class A from the project named Polymorph01.

using System; class A : Object {public void m() { Console.WriteLine("m()");}//end method m() }//end class A

Redundant code

Recall that explicitly extending Object is not required (but it also doesn't hurt anything).

The class named A would extend the class named Object by default unless the class named A explicitly extends some other class.

The method named m()

The code in Listing 1 defines a method named m() . Note that this version of the method has an empty argument list (it doesn't receive anyparameters when it is executed). The behavior of the method is simply to display a message indicating that it is executing.

The class named B

Listing 2 contains the definition for the class named B . This class extends the class named A and inherits the method named m defined in the class named A .

Listing 2 . Class B from the project named Polymorph01.

class B : A { public void m(int x) {Console.WriteLine("m(int x)"); }//end method m(int x)//---------------------------------// public void m(String y) {Console.WriteLine("m(String y)"); }//end method m(String y)}//end class B

Overloaded methods

In addition to the inherited method named m , the class named B defines two additional overloaded versions of the method named m :

  • m(int x)
  • m(String y)

Note that each of these versions of the method receives a single parameter and the type of the parameter is different in each case.

As with the version of the method having the same name defined in the class named A , the behavior of each of these two methods is simply to display a message indicating that it is executing.

The driver class

Listing 3 contains the definition of the driver class named Polymorph01 .

Listing 3 . Class Polymorph01 from the project named Polymorph01.

public class Polymorph01 { public static void Main() {B var = new B(); var.m();var.m(3); var.m("String");//Pause until the user presses a key. Console.ReadKey();}//end Main }//end class Polymorph01

Call all three overloaded methods

The code in the Main method

  • Instantiates a new object of the class named B
  • Successively calls each of the three overloaded versions of the method named m on the reference to that object.

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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