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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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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.


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.


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

How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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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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