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Answer 15

Question 16

True or false? With a floating point type, positive exponent values mean that the decimal point should be shifted to the left. Negative exponent values meanthat the decimal point should be shifted to the right.

Answer 16

Question 17

True or false? Java supports two different floating point types:

  • float
  • double

Answer 17

Question 18

True or false? The purpose of the char type is to make it possible to represent the letters of the alphabet, the punctuation characters,and the numeric characters internally in the computer. This is accomplished by assigning a numeric value to each character.

Answer 18

Question 19

True or false? The char type uses a standard character representation known as Unicode to represent up to 65,535 different characters.

Answer 19

Question 20

True or false? In Java, you usually represent a character in your program by surrounding it with quotation marks as shown below:

"A".

Answer 20

Question 21

True or false? The boolean type can have three values:

  • true
  • false
  • maybe

Answer 21

Question 22

True or false? Java is an extensible programming language, meaning that there is a core component to the language that is always available. Beyondthe core component, different programmers can extend the language in different ways to meet their individual needs.

Answer 22

Question 23

True or false? As is the case in C++, one of the ways that individual programmers can extend the Java language is to create overloaded operators forthe primitive types.

Answer 23

Question 24

True or false? One of the ways that individual programmers can extend the Java language is to create new types.

Answer 24

Question 25

True or false? The specific Java mechanism that makes it possible for programmers to define new types is a mechanism known as the class definition .

Answer 25

What is the meaning of the following two images?

This image was inserted here simply to insert some space between the questions and the answers to keep them from being visible on the screen at thesame time.

The image is also an example of the kinds of things that we do in my course titled ITSE 2321, Object-Oriented Programming.

Missing image

This image was also inserted for the purpose of inserting space between the questions and the answers.

Missing image

Answers

Answer 25

True.

Back to Question 25

Answer 24

True.

Back to Question 24

Answer 23

False. Java does not allow programmers to create overloaded operators for the primitive types.

Back to Question 23

Answer 22

True.

Back to Question 22

Answer 21

False. The boolean type can have only two values:

  • true
  • false

Back to Question 21

Answer 20

False. In Java, you usually represent a character in your program by surrounding it with apostrophes as shown below:

'A'.

Back to Question 20

Answer 19

True.

Back to Question 19

Answer 18

True.

Back to Question 18

Answer 17

True.

Back to Question 17

Answer 16

False. With a floating point type, positive exponent values mean that the decimal point should be shifted to the right . Negative exponent values mean that the decimal point should be shifted to the left .

Back to Question 16

Answer 15

True.

Back to Question 15

Answer 14

False. Other than type char , there are no unsigned whole-number primitive types in Java.

Back to Question 14

Answer 13

True.

Back to Question 13

Answer 12

False. In Java, there are five different whole-number types:

  • byte
  • short
  • int
  • long
  • char

Back to Question 12

Answer 11

True.

Back to Question 11

Answer 10

False. The primitive types are part of the core language.

Back to Question 10

Answer 9

True.

Back to Question 9

Answer 8

Four of the possible operations are:

  • You can add them together.
  • You can subtract one from the other.
  • You can multiply one by the other.
  • You can divide one by the other.

Back to Question 8

Answer 7

False. If you have an instance of the byte type, the set of all possible values that you can store in that instance is the set of all thewhole numbers ranging from -128 to +127.

Back to Question 7

Answer 6

True.

Back to Question 6

Answer 5

True.

Back to Question 5

Answer 4

False. In Java, data type boolean conceptually has nothing to do with numeric values, but deals only with the concept of true or false .

Back to Question 4

Answer 3

True.

Back to Question 3

Answer 2

False. Some data types such at type int involve whole numbers only (no fractional parts are allowed) .

Back to Question 2

Answer 1

True.

Back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Jb0150r Review: A Gentle Introduction to Java Data Types
  • File: Jb0150r.htm
  • Published: 11/21/12
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download aPDF file for this module at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, youshould be aware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version ofthe module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale onAmazon.com showing me as the author. I neither receive compensation for those sales nor do I know who does receive compensation. If youpurchase such a book, please be aware that it is a copy of a module that is freely available on cnx.org and that it was made andpublished without my prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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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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