<< Chapter < Page Chapter >> Page >

Then the new code decodes the strings into JSONObject objects using a parse method from the JSONParser class and saves them in a fourth ArrayList object.

The contents of both lists of JSONObject objects are displayed on the computer screen after they are populated with decoded data fromthe JSON strings.

Decode and display using the JSONValue class

I will explain this program in fragments, and will begin at the point where the new code begins. The first fragment is shown in Listing 1 .

Listing 1 . Decode and display using the JSONValue class. //Create a container for decoded JSON strings. ArrayList<JSONObject>listC = new ArrayList<JSONObject>(); //Decode and display JSON strings using the parse method of the// JSONValue class System.out.println("Decode using JSONValue class");decodeC(listB,listC); display(listC);System.out.println();//blank line

Immediately prior to the code in Listing 1 , three JSON strings are stored as elements in an ArrayList object referred to as listB .

Listing 1 begins by instantiating a new ArrayList object, referred to as listC that will receive the decoded versions of the JSON strings as type JSONObject objects. Then Listing 1 calls the method named decodeC passing the list of JSON strings and the empty list as parameters.

The method named decodeC

The method named decodeC is shown in its entirety in Listing 2 .

Listing 2 . The method named decodeC. static void decodeC(ArrayList input,ArrayList output){ String temp = null;Iterator<String>iterator = input.iterator(); while (iterator.hasNext()){temp = iterator.next(); output.add(JSONValue.parse(temp));}//end while loop }//end decodeC

This method decodes a list of JSON strings into JSONObject objects using a static parse method of the JSONValue class. The resulting JSONObject objects are added to the empty ArrayList object received as an incoming parameter. When the method returns, that list contains one JSONObject object for each JSON string contained in the incoming ArrayList object.

Display contents of JSONObject objects

Returning now to the code in Listing 1 , the next statement calls the display method passing the now-populated listC as a parameter. At this point, the JSONObject objects stored in listC contain the information that was extracted from the JSON strings by the parse method of the JSONValue class.

The display method is shown in its entirety in Listing 3 .

Listing 3 . The display method. static void display(ArrayList input){ JSONObject temp = null;Iterator<JSONObject>iterator = input.iterator(); while (iterator.hasNext()){temp = iterator.next(); System.out.print("Name: " + temp.get("name"));System.out.print(" Age: " + temp.get("age")); System.out.println(" Is student? " + temp.get("student"));}//end while loop }//end display

This method uses the get method inherited from the HashMap class to get and display the values in a list of JSONObject objects for a known set of keys. This is plain-vanilla Java code and shouldn't require further explanation. The results of this call to the display method are shown in the top half of Figure 1 .

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
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
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
Got questions? Join the online conversation and get instant answers!
Jobilize.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