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This module contains review questions and answers keyed to the module titled Jb0130: Java OOP: A Gentle Introduction to Methods in Java

Revised: Sun Mar 27 20:24:28 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Jb0130: Java OOP: A Gentle Introduction to Methods in Java .

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? Methods are often called functions, procedures, subroutines, and various other names.

Answer 1

Question 2

True or false? A Java method can be thought of as a separate program module that has the ability to do something useful. Having written the method, you canmake it available for use as a helper to your main program each time your main program needs to have that useful thing done.

Answer 2

Question 3

True or false? In Java, you must write all of the methods that you need.

Answer 3

Question 4

True or false? In the following statement, sqRtPeas is the name of a method.

System.out.println(sqRtPeas);

Answer 4

Question 5

True or false? Java only allows you to use the pre-written methods in the class libraries.

Answer 5

Question 6

Normally, when designing and writing a method such as one that can calculate the square root of a number, it is desirable to write it in such a way that itcan calculate the square root of any number (as opposed to only one specific number) . How is that accomplished?

Answer 6

Question 7

True or false? According to common programming jargon, the process of causinga method to be executed is commonly referred to as setting the method.

Answer 7

Question 8

True or false? This process of providing information to a method when you call it is commonly referred to as sending a message to the method.

Answer 8

Question 9

True or false? When called, a method will usually

  • perform an action
  • send back an answer. or
  • some combination of the two

Answer 9

Question 10

True or false? A value of type double can be (almost) any numeric value, positive or negative, with or without a decimal part.

Answer 10

Question 11

True or false? Java is not a case-sensitive programming language.

Answer 11

Question 12

True or false? The following two rules will generally suffice to keep you out of trouble when defining variable and method names in Java:

  • Use only letters and numbers in Java names.
  • Always make the first character a letter.

Answer 12

Question 13

True or false? In Java, the assignment operator is the % character.

Answer 13

Question 14

True or false? The behavior of the sqrt method is to calculate and display the square root of the value passed to it as a parameter.

Answer 14

Question 15

True or false? The syntax for passing parameters to a method consists of following the name of the method with a pair of matching parentheses thatcontain the parameter or parameters. If more than one parameter is being passed, they are all included within the parentheses and separated by commas. The orderof the parameters is not important.

Questions & Answers

what is economic
Nana Reply
Economics is the study of how Individual consumer, institution and society as a whole uses its available finite resources to satisfy infinite needs and wants
Richard
what is international trade
BOBO Reply
other things remain constant.
Esale Reply
explain scarcity
Richard Reply
scarcity occurs when there are not enough resources to satisfy human's needs and wants therefore we need to allocate our resources using the price mechanism.
Isha
scarcity is when there is inadequate resources to catch the unlimited wants which would compel individual to make choice.
Prince
scarcity simply means when there's a shortages of resources to satisfy Hunan's need and wants in a particular time, which means the demand for it at the moment is higher than the supply
Abu
scarcity simply means when there's a shortages of resources to satisfy humans need and wants in a particular time, which means the demand for it at the moment is higher than it supply.
Abu
😂😂😂
Isha
That escalated real quick😂
Isha
scarcity is sometimes considered as the basic problems of economics resources r scarce because we live in a world of humans in which wants are infinite but the land labor and capital r required to satisfy those wants are limited
Nkwenti
scarcity means unlimited resources
Rena
joint or complementary demand
Ryt Reply
what is demand
Qudus Reply
it maybe define as the amount or quantity of goods and services which a consumer is willing to buy with the ability to pay at a given price at a particular time
Habib
yesoo thanks dear
Gyamfua
why is economics a science
Isaac Reply
Because science is all about thinking by making models whether a computational or Mathematical. Economics is a social sciences because it effects society but to understand Economics we use maths so it is a Science
Amit
hi
Mony
hello
Amit
I hope.......Economic is social science because it makes new new currency of money,it is decided the country’s depend system and the system be repeated others benefits in our ...
Anik
yeah
Habib
so what is the disadvantages of mix economic system
Habib
Economics is regarded as a social science because it uses scientific methods to build theories that can help explain the behaviour of individuals, groups and organisations.
Ali
The question is: why is Economic a "science" and not why is economics a "social science?" Alright folks?
Xavier
In my own understanding of why economics is a science it bcz it deals mainly on human resources just like biology that deals in the human body why economics is science it also deals on the management of human resources all over the world bcz without economics there will be no human resources
Ogbonnaya
what is technology
Nkwenti
my response to the earlier question is, economics is a science but not a pure science like biology, chemistry and physics. The reason is that those pure science study inanimate object while economics study human being, their experiment are predictable.
raimi
Economics is a social science subject that shows the relationship between ends and scarce means with their alternative uses
Ajenifuja
what is Equilibrium?
Fatima Reply
it means equal price and equal quality
Arthur
thank u Arthur!
Fatima
😇🙏
Fatima
Thanks
Moses
Equilibrium is a state of balance in an economy. In as far as market forces are reasonably concerned, equilibrium means the state at which the quantity of goods supplied is equal to the quantity of goods demanded.
Xavier
what is labour
Ayham
labor can be define as a both physical and mental effort of man put forward towards production
Habib
name the types of demand and explain any two
ALIMAMYISLA
Joint demand Composite demand Competitive demand
Ajenifuja
Labourcan be defined as man mental and physical exertion
Ajenifuja
equilibrium is a state of balance especially between opposing forces or influences
Nkwenti
what is elasticity
Motseoa Reply
difference between demand and supply
Adeyemi Reply
Demand- It is the desire of a buyer and his ability to pay for a particular commodity at a specific price. Supply- It is quantity of a commodity which is made available by the producers to its consumers at certain price.
Ali
yes OK thank you dear
Gyamfua
Demand can be defined as the ability a buyer is willing and able to pay at a specific price and in agiven period of time Supply can be defined as the ability the producer is willing to supply with a specific price
Ajenifuja
thanks
antony
what is labor force
Habib
demand represents the consumer while supply represents the firm
Nkwenti
restriction on international trade
Ayim Reply
formula for price elasticity of demand
Lognyuu Reply
what is average cost advantage and absolute cost advantage
Tamo Reply
cost advantage is an advantage that the firm has over competitors in terms of costs absolute advantage is d ability of an individual company, region,or country to produce a greater quantity of a good of service with the same quantity of inputs per unit per time
Nkwenti
what is ceteris paribus
Uchaash
other things remain constant.
Esale
can you explain in more details about ceteris paribus?
Uchaash
what is demand
Home Reply
demand can be defined as the quantity of a commodity which people are willing to buy at particular times and at a given price .
YAHA
you are talking about campaney in my self ihave campaney why don't you calculated my business
Adow Reply
Difference between extinct and extici spicies
Amanpreet 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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