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Figure 3 . Program output in self-test mode.
Missing Figure.
(Remember, all six output images are displayed on top of one another in the upper-left corner of the screen. You must manually move them tosee all six images.)

A 3D parabola

The main method creates and displays a surface consisting of a 3D parabola. You can think of the surface as representing a one-quartersection of a bowl, or perhaps a satellite dish with the center of the dish in the upper left corner of the image. The top three images in Figure 3 are the images produced from the raw surface. The bottom three images are the imagesproduced by the log of the surface, (which is no longer a 3D parabola) .

The calibration scale

The calibration scale is displayed immediately below the image of each surface.

The images are stacked

When the program is executed, the six surfaces are stacked in the upper left corner of the screen. (You must physically move the images on the top to see the images on the bottom.) The stacking order of the surfaces from bottomto top is based on the values of the display parameter in the order 0, 1, 2, 3, 4, 5.

With and without axes

Some of the surfaces show axes and some do not. This is controlled by the value of the constructor parameter named axis . A true value for axis causes the axes to be drawn.

A window listener

The constructor defines an anonymous inner class WindowListener on the close button on the Frame (the X in the upper right hand corner of the Frame ) . Clicking the close button will terminate the program that uses an object of this class.


The program was tested using J2SE 8.0 and Win 7. Because the program uses Java features that were introduced in J2SE 5.0, it may not compile successfullywith earlier versions of Java.

The program named ImgMod29

The program named ImgMod29 is rather long, so as usual I will break it down and discuss it in fragments. You can view a complete listing of theprogram in Listing 29 near the end of the module.

The main method

The program consists of a top-level class named ImgMod29 , plus several inner classes. The class includes a main method that is use for self-testing the class. To put things in context, I will beginmy discussion with the main method.

The main method begins in Listing 1 .

Listing 1. Beginning of the main method.
public static void main(String[] args){int numberRows = 59; int numberCols = 59;double[][]data = new double[numberRows][numberCols];int blockSize = 2;

Local variables

The array for the surface elevation data

Listing 1 declares a 2D array of type double to contain the 3D surface elevation data values. This is a square array consisting of 59elevation values on each side. (However, there is no requirement for the surface to be square.)

The blocksize parameter

Listing 1 also defines a value of 2 for the blockSize parameter. This variable will be passed to the constructor for the ImgMod29 class, causing each elevation value to be plotted as a small square of four pixels, two pixels on each side of the square.

(The overall size of the display can be controlled by controlling the size of the array containing the surface elevation values and alsocontrolling the value of blockSize .)

Questions & Answers

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.
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
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
characteristics of micro business
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How can I make nanorobot?
how did you get the value of 2000N.What calculations are needed to arrive at it
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