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Answer 19

The name of the primitive type begins with a lower-case letter and the name of the wrapper type begins with an upper-case letter such as double and Double . Note that in some cases, however, that they are not spelled the same. For example, the Integer class is the wrapper for type int .

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Answer 18

Wrapper classes

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Answer 17

This has some ramifications as to how variables can be used (passing to methods, returning from methods, etc.) . For example, all variables of primitive types are passed by value to methods meaning that the code in the method only has access to a copy of the variable and does not have the abilityto modify the variable.

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Answer 16

False. Primitive data types in Java (int, double, etc.) are not true objects.

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Answer 15

True.

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Answer 14

False. The char type in Java is a 16-bit Unicode character.

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Answer 13

  • byte
  • short
  • int
  • long
  • float
  • double
  • char
  • boolean

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Answer 12

Primitive types contain a single value.

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Answer 11

Java supports both primitive types and reference (or object) types.

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Answer 10

In Java, a variable of a specified type is represented exactly the same way regardless of the platform on which the application or applet is being executed.

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Answer 9

False. In Java, all variables of type int contain signed values.

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Answer 8

All variables in Java must have a defined type . The definition of the type determines the set of values that can be stored in the variable and theoperations that can be performed on the variable.

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Answer 7

The syntax is shown in boldface below:

public static void main( String[] args )

In this case, the type of variable declared is an array of type String named args (type String[]) . The purpose of the String array variable in the argument list is to make it possible to capture arguments entered on the commandline.

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Answer 6

False. Fortunately, Java provides very strict type checking and generally refuses to compile statements with type mismatches.

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Answer 5

int firstVariable, secondVariable = 10;

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Answer 4

False: In Java, it is possible to initialize the value of a variable when it is declared, but initialization is not required. (Note however that in some situations, the usage of the variable may require that it be purposely initialized.) .

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Answer 3

To use a variable, you must notify the compiler of the name and the type of the variable (declare the variable).

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Answer 2

variable

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Answer 1

Listing 2 . Listing for Answer 1.
/*File simple4.java This application reads characters from the keyboard untilencountering the # character and echoes each character to the screen. The program terminates when the user entersthe # character. **********************************************************/class simple4 { //define the controlling class public static void main(String[]args) throws java.io.IOException {int ch1 = 0; System.out.println("Enter some text, terminate with #"); while( (ch1 = System.in.read() ) != '#')System.out.print((char)ch1); System.out.println("Goodbye");}//end main }//End simple4 class.

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Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Jb0200r: Review: Variables
  • File: Jb0200r.htm
  • Published: 11/23/12
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

what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
what's microbiome?
john Reply
Microbiology is the scientific study of microorganisms
Ibra
the microorganisms in a particular environment (including the body or a part of the body).
Ibra
describe the bacterial cell
Akello
The biggest populations of microbes reside in the gut.other popular habitats include the skin genitals.The microbial cells and their genetic material ,the microbiome ,live with human from birth .
Zahreen
can agriculture be integrated into biology
David
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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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