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Figure index

Listing index

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Answers

Answer 11

True.

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Answer 10

False. The code in Listing 6 produces the screen output with the errors shown in Figure 10 .

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Answer 9

False. The code in Listing 5 produces the screen output shown in Figure 8 . The parse method is not static in the JSONParser class.

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Answer 8

True.

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Answer 7

True. Even though it is not necessary to instantiate an object of a class to call a static method belonging to that class, it is possible to instantiate an object of the JSONValue class and to call the static parse method on that object.

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Answer 6

False. The code in Listing 2 produces the screen output with the compiler errors shown in Figure 4 . The return value from the parse method must be cast from type Object to type JSONObject to store it in a variable of type JSONObject .

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Answer 5

False. The code in Listing 1 produces the screen output with the compiler errors shown in Figure 2 . The json-simple library does not define a class named JSONString .

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Answer 4

False. The json-simple library does not define a class named JSONString . Both parse methods return a reference of type java.lang.Object . However, it is actually a reference to an object of the class JSONObject , which is a subclass of Object several levels down. The reference must be downcast to type JSONObject in order to call some of the methods defined in the JSONObject class or to store the object's reference in a variable of type JSONObject .

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Answer 3

False. The parse method belonging to the class named JSONParser is not declared static . Therefore, it is an instance method . Instance methods can only be called on an object instantiated from the class.

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Answer 2

False. The parse method that is defined in the class named JSONValue is a static method. Static methods belonging to a class can be called without the requirement toinstantiate an object of the class.

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Answer 1

False. The class named JSONValue also defines a method named parse that can be used to decode or parse a JSON string.

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Figures

This section contains Figures that may be referred to by one or more questions or answers.

Figure 1

Joe 21

Figure 2

Code01.java:8: error: cannot find symbol import org.json.simple.JSONString;^ symbol: class JSONStringlocation: package org.json.simple Code01.java:20: error: cannot find symbolJSONString jsonString02 = JSONValue.parse(jsonString0101); ^symbol: class JSONString location: class Code01Code01.java:20: error: cannot find symbol JSONString jsonString02 = JSONValue.parse(jsonString0101);^ symbol: variable jsonString0101location: class Code01 Note: Code01.java uses unchecked or unsafe operations.Note: Recompile with -Xlint:unchecked for details. 3 errorsError: Could not find or load main class Code01

Questions & Answers

Application of nanotechnology in medicine
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
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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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