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This module contains review questions and answers keyed to the module titled Java3002: Creating and Manipulating Turtles and Pictures in a World Object.

Revised: Sat Apr 02 14:17:44 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Java3002: Creating and Manipulating Turtles and Pictures in a World Object .

The questions and the answers are connected by hyperlinks to make it easy for you to navigate from the question to the answer and back again.

Questions

Question 1 .

True or False? The import directive at the very beginning of Listing 1 is a directive to the compiler and the virtual machine notifying them that the class named Color can be found in the package named java.awt .

Listing 1 . Question 1.
import java.awt.Color; public class Prob01{//Driver classpublic static void main(String[] args){//Instantiate an object and call its method named run. Prob01Runner obj = new Prob01Runner();obj.run(); //Get information from the object and display it on// the command-line screen. System.out.println(obj.getMars());System.out.println(obj.getJoe()); System.out.println(obj.getSue());}//end main }//end class Prob01

Answer 1

Question 2

True or False? The class named Color imported in Listing 1 is a member of Ericson's multimedia library.

Answer 2

Question 3

True or False? A package is the specification of a particular folder on the disk relative to a standard root folder.

Answer 3

Question 4

True or False? Every Java application and every Java applet must include the definition of a class that contains the definition of a method named main .

Answer 4

Question 5

True or False? The name of the class containing the main method is also the name of the application insofar as being able to compile andexecute the application is concerned.

Answer 5

Question 6

True or False? The name of the application shown in Listing 1 is Proj01 .

Answer 6

Question 7

True or False? The name of the source code file containing the class definition shown in Listing 1 must be Prob01.java in order for the application to compile and run as an application named Prob01 .

Answer 7

Question 8

True or False? In its simplest form, an application can be compiled by executing the command shown in Listing 2 at the command prompt where Prob01.java is the name of the file containing the main method.

Listing 2 . Question 8.
javac Prob01

Answer 8

Question 9

True or False? It is often necessary to specify the path to various library files on the command line when compiling an application. In that case,the simplest form given in Listing 3 is not sufficient.

Answer 9

Question 10

True or False? When a Java application is successfully compiled, it will produce one or more output files with an extension of .class .

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir 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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