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The screen output

Listing 1 shows the instantiation of a new object of class B, immediately following the instantiation of an object of class A.

The object instantiated from the member class named B is linked to the objectinstantiated from the top-level class named A.

The constructors for the classes named A and B produce the two lines of output shown in Figure 3 , the first of which is a repeat of the output shown in Figure 2 .

The method named bShow

The class named B also defines a private method named bShow . As with the method named aShow mentioned earlier, I will defer a discussion of bShow until later when it is called.

The member class named C

Listing 7 shows the beginning of a member class named C.

Class C is a member of the class named B. In other words, the beginning of the definition of the class named C begins before the curly brace thatends the definition of the class named B.

The code in Listing 7 declares several instance variables for the class named C, and initializes two ofthem. The purpose of these variables will become clear later when they are used.

(Note also that class C extends class X, in order to illustrate that the class containment hierarchy is independent of the inheritance hierarchy.)

Constructor for class C

Listing 8 shows the beginning of the constructor for the class named C.

Whenever an object of the class named C is instantiated, the constructor code shown in Listing 8 does the following:

  • Saves the value of an incoming parameter in a private instance variable named cVar .
  • Increments the object counter named objCntC , which is a class variable of the class named A, maintaining a count of objects instantiatedfrom class C.
  • Saves the value of the object counter in an instance variable named objNumber to identify the specific object.
  • Displays a message showing the identification of the object being instantiated.

Screen output

Listing 1 shows the instantiation of a new object of class C, immediately following the instantiation of an object of class B.

The object instantiated from the member class named C is linked to the objectinstantiated from the member class named B. Similarly, the object instantiated from the member class named B is linked to the object instantiated from thetop-level class named A.

The constructors for the classes named A, B, and C produce the three lines of output shown in Figure 4 , the first two of which are repeated from Figures 2 and Figure 3 .

The output shown in Figure 4 demonstrates that the code in Listing 1 causes the constructors for the three classes to be executed in sequence.

At this point, I am going to put the discussion of the class named C on hold and discuss another member class named D.

The private member class named D

Top-level classes cannot be private. However, member classes can be private provided that the using code is consistent with theuse of private members. To demonstrate this, the class named C contains a private member class named D, which is shown in its entirety in Listing 9 .

The most significant thing about the class named D is that it is declared private.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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