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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

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Tinuke Reply
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Godwin Reply
what's economic
John Reply
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Hoyindamolah Reply
the theroy of demand
Tinuke
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Jusu Reply
Market Economy:Is a system where the laws of supply and those demand direct the production of goods and services.
Iyabo
what is the meaning of money and inflation
Tinuke
what's demand in economics?
Abi Reply
Demand in economic is the good a consumer is willing or able to purchase at a particular time
Hoyindamolah
explanation of graph,bar chart,pie chart with examples
Abdulmojeed
4. Assume, after completing your economics class, you explain your friend that about 65% of GDP is spending on consumption. Your friend tells you that people are greedy and it is better for GDP if they spend on services or experiences. What would be your answer to your friend?
Javohir Reply
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Mhizz
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Saliman Reply
yh because it adopts scientific methods in research and analysis of economic issues
maame
Analyse Eskom in terms of the characteristics of a monopoly
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microeconomics deals with individuals and firms while macroeconomics deal with the activities of the society in large
C-Stixxs Reply
Morning guys I need questions under any topic in economics
C-Stixxs
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Shalom
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maame
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Fixed Reply
Ok
Olamilekan
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Arome Reply
is a science which studies human behavior as a relationship with ends n scarce which have alternative uses
C-Stixxs
Explain four reason why scale of preference is necessery
Afusat Reply
A soccer field is a rectangle 130 meters wide and 110 meters long. The coach asks players to run from one corner to the other corner diagonally across. What is that distance, to the nearest tenths place.
Kimberly Reply
Jeannette has $5 and $10 bills in her wallet. The number of fives is three more than six times the number of tens. Let t represent the number of tens. Write an expression for the number of fives.
August Reply
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Leonardo Reply
How do i figure this problem out.
how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
Shanjida
I think if critical temperature denote high temperature then a liquid stats boils that time the water stats to evaporate so some moles of h2o to up and due to high temp the bonding break they have low density so it can be a reason
s.
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris 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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