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Answer 32

In Java, the scope can be reduced by placing it within a block of code within the method. The scope extends from the point at which it is declared to the end of the block of code in which it is declared.

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Answer 31

A block of code is defined by enclosing it within curly brackets as shown below

{ ... } .

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Answer 30

The scope of a local variable extends from the point at which it is declared to the end of the block of code in which it is declared.

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Answer 29

In Java, local variables are declared within the body of a method or constructor, or within a block of code contained within the body of a method orconstructor.

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Answer 28

A member variable is a member of a class ( class variable) or a member of an object instantiated from that class ( instance variable). It must be declared within a class, but not within the body of a method orconstructor of the class.

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Answer 27

The scope of a variable places it in one of the following four categories:

  • member variable
  • local variable
  • method parameter
  • exception handler parameter

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Answer 26

The scope of a Java variable is the block of code within which the variable is accessible.

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Answer 25

The rules for Java variable names are as follows:

  • Must be a legal Java identifier consisting of a series of Unicode characters.
  • Must not be the same as a Java keyword and must not be true or false.
  • Must not be the same as another variable whose declaration appears in the same scope.

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Answer 24

In Java, a legal identifier is a sequence of Unicode letters and digits of unlimited length. The first character must be a letter. All subsequentcharacters must be letters or numerals from any alphabet that Unicode supports. In addition, the underscore character ( _ ) and the dollar sign ( $ ) are considered letters and may be used as any character including the first one.

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Answer 23

False. The name of a reference variable evaluates to either null, or to information that can be used to access an object whose reference has been storedin the variable.

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Answer 22

Later versions of Java support either syntax shown in Listing 1 .

Listing 1 . Listing for Answer 22.
class test{ public static void main(String[]args){ Double var1 = 5.5;double var2 = var1.doubleValue(); System.out.println(var2);double var3 = var1; System.out.println(var3);}//end main }//end class test

Back to Question 22

Answer 21

The proper syntax for early versions of Java is shown below. Note the upper-case D . Also note the instantiation of a new object of type Double .

Double myWrappedData = new Double(5.5);

Later versions of Java support the following syntax with the new object of type Double being instantiated automatically:

Double myWrappedData = 5.5;

Back to Question 21

Answer 20

The proper syntax is shown below. Note the lower-case d .

double myPrimitiveData = 5.5;

Questions & Answers

The similarities and difference between the definition of prof Lionel Robbins and prof Paul ; A; Samuel son, each 5 definition
prince Reply
What are the basic concepts of economic
Taye Reply
With the aid of appropriate diagram differentiate between change in demand
Jones Reply
explain demand
Alaka Reply
Demand is a quantity of goods and services a consumer is willing to buy at given price in a period of time.
Aliado
who break in bulk
Alaka
what is demands and it law
matthew Reply
Demands, is the quantity of agoods a consumer is willing to buy at given price in a give period of time where as the law of demand states that, the higher the price, the lower the quantity demanded and the lower the price, the higher the quantity demanded by consumers
Aliado
what is division of labour
Sunday Reply
The similarities and difference between the definition of prof Lionel Robbins and prof Paul ; A; Samuel son, each 5 definition
prince
Demand is set to be enlastic when its what
bohvy Reply
more than boll had him had bhaag......
SHADAB
Cant you speak in English
john
a little
Tith
I do speak English.. the question is Demand is set to be elasticity went the dash *2
bohvy
if I want some document from,that 9k?
Tith
hi
muhammed
if both %^ Increase in input & %^ increase in output, then it is elastic and = to 1.
Rowda
Allah's Allah's last I'll be in the area around.....
SHADAB
Hy guyz
Vuyai
Hi
john
How are you all doing rumies
john
why is scarcity a fundamental problem in economic
Abubakar Reply
what is demand curve
Takyi Reply
xplain
Ubong
thanks for your help with the same....
SHADAB
What is elasticity of demand
Karim
what is unemployment
Alaka
what is opportunity cost
Samuel Reply
Opportunity cost which also mean real cost it is a term used for foregone alternatives
john
what is demand
ikea Reply
Demand may simply be define as the total quantity of good or service a consumer are willing to buy at a specific price within a period of time.
john
your language is tough
techy Reply
How economics is related to other subjects?
Mikateko Reply
It is social science related subjects
john
How ? explain
Mikateko
and something else help me about business cycle
Mikateko
s classified as a social science. This view makes eco­nomics an academic relative of political science, sociology, psychology and anthropology. All of these disciplines study the behaviour of human beings individually and in groups.
john
The business cycle describes the rise and fall in production output of goods and services in an economy. Business cycles are generally measured using the rise and fall in the real gross domestic product (GDP) or the GDP.
john
hello everyone
Selena
hii
Yes
hello selena
Yes
How are you doing every one
john
hello Selena
Yes
hi
NONSO
yes
NONSO
What Is Economic Growth?
Saviour Reply
is the increase of quantity of goods ans services
Hashi
what is economic
Yomina Reply
Economic may be define as the science which studies human behaviour in relationship with end and scarce which have alternative use. This definition was drafted by Lionel robbin
john
good
Tith
it is science of wealth.
SHADAB
if I want some documents from you ,Are you ok?
Tith
it is not only wealth as well as welfare also.as well as scarce means of ends,for human satisfaction for alternative uses.
Avijit
economics applications
techy
Researchers demonstrated that the hippocampus functions in memory processing by creating lesions in the hippocampi of rats, which resulted in ________.
Mapo Reply
The formulation of new memories is sometimes called ________, and the process of bringing up old memories is called ________.
Mapo 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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