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Learn how to use shapes to clip images during the drawing process.

Revised: Mon Apr 04 10:32:52 CDT 2016

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Table of contents


This module is one of a series of modules designed to teach you about Object-Oriented Programming (OOP) using Java.

The program described in this module requires the use of the Guzdial-Ericson multimedia class library. You will find download, installation, and usageinstructions for the library at Java OOP: The Guzdial-Ericson Multimedia Class Library .

Viewing tip

I recommend that you open another copy of this document in a separate browser window and use the following links to easily find and view the Figures and Listings while you are reading about them.



  • Listing 1 . The driver class named Prob04.
  • Listing 2 . Beginning of the class named Prob04Runner.
  • Listing 3 . Clip the picture and display your name.
  • Listing 4 . The method named clipToEllipse.
  • Listing 5 . Complete program listing.


In this module, you will learn how to use shapes to clip images during the drawing process.

Program specifications

Write a program named Prob04 that uses the class definition shown in Listing 1 and Ericson's media library along with the image file named Prob04a.jpg (see Figure 1 ) to produce the graphic output images shown in Figure 2 and Figure 3 . Don't forget to display your name in the output image as shown.

Figure 1 - Input file named Prob04a.jpg.

Image of a beach scene

Figure 2 - First output image.

First output image

Figure 3 - Second output image.

Second output image shows the first output image clipped by an ellipse.

New classes

You may define new classes as necessary to cause your program to behave as required, but you may not modify the class definition for the class named Prob04 shown in Listing 1 .

Rotate, mirror, and clip

The program rotates a Picture object by 35 degrees with no scaling. Then it does a four-way mirror on the rotated picture. Finally, itclips the image to an elliptical format as shown in Figure 3 .

Required output text

In addition to the two output images shown above, your program must display your name and the other line of text shown in Figure 4 .

Figure 4 - Required text output.
Display your name here. Picture, filename None height 404 width 425

Discussion and sample code

Will discuss in fragments

I will discuss and explain this program in fragments. A complete listing of the program is provided in Listing 5 near the end of the module.

The driver class named Prob04

The driver class containing the main method is shown in Listing 1 .

Listing 1 - The driver class named Prob04.
public class Prob04{ public static void main(String[]args){ new Prob04Runner().run();}//end main method }//end class Prob04

If you have been studying the earlier modules in this collection, no explanation of Listing 1 should be required.

Questions & Answers

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
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?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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
how did you get the value of 2000N.What calculations are needed to arrive at it
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