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Usage instructions

At runtime, the name of the class that implements the GraphIntfc01 interface must be provided as a command-line argument.

If the command-line argument is missing, the program instantiates an object from the internal test class named junk and plots the data produced by thatobject. Therefore, you can test the program by running it with no command-line arguments. This will produce the display shown in Figure 4 .

Figure 4. Graphic Display for Self-Test Class.
missing image

If the command-line argument is provided, the program instantiates an object of the class whose name matches the argument, and plots the data produced bythat object.

Plotting parameters

This program provides the following text fields for user input, along with a button labeled Graph . This allows the user to adjust the parameters and re-plot the graph as many times as needed with as many differentplotting scales as may be needed:

  • xMin = minimum x-axis value
  • xMax = maximum x-axis value
  • yMin = minimum y-axis value
  • yMax = maximum y-axis value
  • xTicInt = tic interval on x-axis
  • yTicInt = tic interval on y-axis
  • xCalcInc = calculation interval

The user can modify any of these parameters and then press the Graph button to cause the five functions to be re-plotted according to the newparameters.

A new object

Whenever the Graph button is pressed, the event handler for that button instantiates a new object of the class that implements the GraphIntfc01 interface.

Depending on the nature of that class, this may be redundant in some cases. However, it is useful in those cases where it is necessary to refresh the valuesof instance variables defined in the class (such as a counter, for example) .

(I will show you how to eliminate this feature from the plotting program if you decide that it is unnecessary for your data.)

Requires java sdk 1.4 or later

This program uses constants that were first defined in the Color class of v1.4.0. Therefore, the program requires v1.4.0 or later to compile andexecute correctly.

Will discuss in fragments

I will discuss this program in fragments. As mentioned earlier, a complete listing of the program is provided in Listing 39 near the end of the module. You should be able to copy and paste that code into your Java source file, and thencompile and execute it successfully.

The class named Graph01

The entire class, including the main method is shown in Listing 19 .

Listing 19. The class named Graph01.
import java.awt.*; import java.awt.event.*;import java.awt.geom.*; import javax.swing.*;import javax.swing.border.*; class Graph01{public static void main( String[]args) throws NoSuchMethodException,ClassNotFoundException, InstantiationException,IllegalAccessException{ if(args.length == 1){//pass command-line parameter new GUI(args[0]); }else{//no command-line parameter given new GUI(null);}//end else }// end main}//end class Graph01 definition

The primary purpose of main method is to instantiate an object of the class named GUI .

In addition, the main method checks to see if the user provided a command-line argument, and if so, passes it along to the constructorfor the GUI class.

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
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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