<< Chapter < Page Chapter >> Page >

Go to answer 11

Figure index

Listing index

What is the meaning of the following two images?

These images were inserted here simply to insert some space between the questions and the answers to keep them from being visible on the screen at thesame time.

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.

Spacer image of a penguin and some houses.

Answers

Answer 11

True.

Go back to Question 11

Answer 10

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

Go back to Question 10

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.

Go back to Question 9

Answer 8

True.

Go back to Question 8

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.

Go back to Question 7

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 .

Go back to Question 6

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 .

Go back to Question 5

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 .

Go back to Question 4

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.

Go back to Question 3

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.

Go back to Question 2

Answer 1

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

Go back to Question 1

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

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket 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
I'm interested in nanotube
Uday
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
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





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
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Object-oriented programming (oop) with java' conversation and receive update notifications?

Ask