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This page contains review questions and answers for the page titled "Json0210: Structure of the json-simple Java Library" in the book titled "The json-simple Java Library".

Revised: Fri Jun 03 17:21:17 CDT 2016

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Table of Contents

Preface

This is a page from the book titled The json-simple Java Library . The book explains how to use the json-simple Java library to generate, transform, and query JSON text. This page provides review questionsand answers for the page titled Json0210: Structure of the json-simple Java Library . Once you study that page, you should be able to answer the review questions in this page.

The questions and the answers in this page 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? Version 1.1 of the json-simple Java library contains the following packages:

  • org.json.simple
  • org.json.simple.parser

Go to answer 1

Question 2

True or False? Version 1.1 of the json-simple Java library contains the public classes shown below

  • ItemList
  • JSONArray
  • JSONObject
  • JSONParser
  • JSONValue
  • ParseException
  • Object
  • Yytoken

Go to answer 2

Question 3

True or False? Version 1.1 of the json-simple Java library contains a class named Yylex in the org.json.simple.parser package that is declared to be package-private .

Go to answer 3

Question 4

True or False? Despite its name, the JSONArray class is not really an array. Instead, it is a List .

Go to answer 4

Question 5

True or False? Objects of the JSONArray class contain unordered data.

Go to answer 5

Question 6

True or False? Other than the JSONObject class and the JSONArray class, all of the classes in version 1.1 of the json-simple Java library extend the Object class.

Go to answer 6

Question 7

True or False? The JSONObject class extends the standard Java TreeSet class.

Go to answer 7

Question 8

True or False? An object of the JSONObject class maps keys or names to values .

Go to answer 8

Question 9

True or False? An object of the JSONObject class can contain duplicate keys but cannot contain duplicate values.

Go to answer 9

Question 10

True or False? An object of the JSONObject class is an unordered collection.

Go to answer 10

What is the meaning of the following two images?

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Spacer image of a rabbit and a penguin.

This image was also inserted for the purpose of inserting space between the questions and the answers.

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Answers

Answer 10

True. An object of the JSONObject class extends the HashMap class and implements the Map interface. According to the Oracle documentation, "The order of a map is defined as the order in which the iterators on the map's collection views return theirelements. Some map implementations, like the TreeMap class, make specific guarantees as to their order; others, like the HashMap class, do not."

Go back to Question 10

Answer 9

False. The JSONObject class implements the Map interface. According to the Oracle documentation, "A map cannot contain duplicate keys; each key can map to at most one value."

Go back to Question 9

Answer 8

True. JSON documentation often speaks of name/value pairs. However, the JSONObject class extends the standard Java HashMap class, which implements the Map interface. According to the Oracle Java documentation, an object that implements the Map interface is "An object that maps keys to values." Therefore, it is probably acceptable to use the terms name/value and key/value interchangeably.

Go back to Question 8

Answer 7

False. The JSONObject class extends the standard Java HashMap class.

Go back to Question 7

Answer 6

True.

Go back to Question 6

Answer 5

False. Because the JSONArray class extends the ArrayList class, which implementsthe List interface, it is "An ordered collection (also known as a sequence). The user of this interface has precise control over where in the list each element is inserted. The user can access elements by their integer index (position in the list), and search for elements in the list."

Go back to Question 5

Answer 4

True. The JSONArray class extends the standard ArrayList class, which implements the List interface.

Go back to Question 4

Answer 3

True.

Go back to Question 3

Answer 2

False. Version 1.1 of the json-simple Java library does not contain a class named Object .

Go back to Question 2

Answer 1

True.

Go back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Json0210R: Review
  • File: Json0210R.htm
  • Published: 06/03/16
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download aPDF file for this module at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, youshould be aware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version ofthe module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale onAmazon.com showing me as the author. I neither receive compensation for those sales nor do I know who does receive compensation. If youpurchase such a book, please be aware that it is a copy of a module that is freely available on cnx.org and that it was made andpublished without my prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
yes
Asali
I'm not good at math so would you help me
Samantha
what is the problem that i will help you to self with?
Asali
how do you translate this in Algebraic Expressions
linda Reply
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
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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