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Answer 10

Question 11

True or False? The execution of a Java application begins and ends in the method named main .

Answer 11

Question 12

True or False? The two commands shown in Listing 4 can be used to compile and execute a Java application named Prob01 where:

  • The only special class library required is contained in the folder named bookClasses .
  • The path from the root to the folder named bookClasses is represented by ---\bookClasses.
Listing 4 . Question 12.
javac -cp .;---\bookClasses Prob01.java java -cp .;---\bookClasses Prob01

Answer 12

Question 13

True or False? The Java compiler program is named java.exe .

Answer 13

Question 14

True or False? The Prob01.java and Prob01 at the ends of the two commands in Listing 4 specify the files being operated on by the virtual machine and the compilerrespectively.

Answer 14

Question 15

True or False? In Listing 4 , the -cp indicates that a classpath follows.

Answer 15

Question 16

True or False? A classpath consists of one or more path specifications separated by semicolon characters.

Answer 16

Question 17

True or False? The purpose of the classpath in Listing 4 is to tell the compiler and the virtual machine where to look for source codefiles that the application needs in order to successfully compile and execute.

Answer 17

Question 18

True or False? The period ahead of the semicolon in Listing 4 says to search the root folder first.

Answer 18

Question 19

True or False? The first statement in the body of the main method in Listing 1 instantiates a new object of the class named Prob01Runner .

Answer 19

Question 20

True or False? The first statement in Listing 1 saves a reference to a new object of the class named Prob01Runner in a reference variable named obj . In general, the type of the variable must be:

  • The name of the object, or
  • The name of a superclass of the object, or
  • The name of an interface implemented by the object.

Answer 20

Question 21

True or False? In Java, you must save a reference to a newly instantiated object in order to gain access to that object later in the program.

Answer 21

Question 22

True or False? The second statement in the body of the main method in Listing 1 uses the reference stored in the variable named obj to call the method named run encapsulated in the object referred to by the contents of obj .

Answer 22

Question 23

True or False? The following three methods that are called in Listing 1 are of a type that is commonly referred to as accessor methods . They are also sometimes referred to by the slang term getter methods .

  • getMars
  • getJoe
  • getSue

Answer 23

Question 24

True or False? The method named println that is called in Listing 1 is a member of Ericson's multimedia library. The purpose of the println method is to display text on an image.

Answer 24

Question 25

True or False? Java uses four access modifiers to specify the accessibility of various classes and members in a Java application:

  • public
  • private
  • protected
  • package-private

Answer 25

Question 26

True or False? Listing 5 shows the beginning of a class named Prob01Runner .

Listing 5 . Question 26.
class Prob01Runner{ //Instantiate the World and Turtle objects.private World mars = new World(300,274); private Turtle joe = new Turtle(mars);private Turtle sue = new Turtle(mars);

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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