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This module contains review questions and answers keyed to the module titled Jb0210: Java OOP: Operators.

Revised: Mon Mar 28 14:04:36 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Jb0210: Java OOP: Operators .

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 .

An operator performs an action on what? Provide the name.

Answer 1

Question 2

What do we call an operator that operates on only one operand?

Answer 2

Question 3

What do we call an operator that operates on two operands?

Answer 3

Question 4

Is the minus sign a unary or a binary operator, or both? Explain your answer.

Answer 4

Question 5

Describe operator overloading.

Answer 5

Question 6

True or false? Java programmers may overload operators.

Answer 6

Question 7

Show the symbols used for the following operators in Java: assignment , not equal , addition , cast .

Answer 7

Question 8

Are any operators automatically overloaded in Java? If so, identify one and describe its overloaded behavior.

Answer 8

Question 9

What is the purpose of the cast operator?

Answer 9

Question 10

True or false? The increment operator is a binary operator.

Answer 10

Question 11

Show the symbol for the increment operator.

Answer 11

Question 12

Describe the appearance and the behavior of the increment operator with both prefix and postfix notation. Show example, possibly incomplete, code fragments illustrating both notational forms.

Answer 12

Question 13

Show the output that would be produced by the Java application in Listing 1 .

Listing 1 . Listing for Question 13.
class incr01 { //define the controlling class public static void main(String[]args){ //define main int x = 5, X = 5, y = 5, Y = 5;System.out.println("x = " + x ); System.out.println("X = " + X );System.out.println("x + X++ = " + (x + X++) ); System.out.println("X = " + X );System.out.println(); System.out.println("y = " + y );System.out.println("Y = " + Y ); System.out.println("y + ++Y = " + (y + ++Y) );System.out.println("Y = " + Y ); }//end main}//End incr01 class. Note no semicolon required //End Java application

Answer 13

Question 14

True or false? Binary operators use outfix notation. If your answer is False, explain why.

Answer 14

Question 15

In practice, what does it mean to say that an operator that has performed an action returns a value (or evaluates to a value) of a given type?

Answer 15

Question 16

Show and describe at least five of the binary arithmetic operators supported by Java (Clarification: binary operators does not mean bitwise operators).

Answer 16

Question 17

In addition to arithmetic addition, what is another use for the plus operator (+) ? Show an example code fragment to illustrate your answer. The code fragment need not be a complete statement.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
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
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
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.
Bharti
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
Daniel
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit 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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