<< Chapter < Page Chapter >> Page >
Learn what JSON is and why, as a Java programmer, you should care about JSON.

Revised: Thu Jun 02 19:20:23 CDT 2016

This page is included in the following Books:

Table of contents

Preface

What is JSON?

The online document titled Introducing JSON begins as follows:

"JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language."

Similarly, the online document titled Java API for JSON Processing: An Introduction to JSON begins as follows:

JSON (JavaScript Object Notation) is a lightweight, text-based, language-independent data exchange format that is easy for humans and machines to read and write. JSON can represent two structured types: objects and arrays. An object is an unordered collection of zero or more name/value pairs. An array is an ordered sequence of zero or more values. The values can be strings, numbers, booleans, null, and these two structured types.

It is important to note that even though JSON is based on JavaScript syntax, JASON is not JavaScript nor is it any other programming language. In fact, it isnot a programming language at all. As stated above, JSON is simply "a lightweight, text-based, language-independent data exchange format" -- nothing more and nothing less.

Figure 1 shows a JSON text string containing name/value pairs as well as nested arrays.

Figure 1. Example JSON text. { "game":[ {"cards":[ "2-club","3-heart","4-diamond","5-spade"],"name":"Tom" },{"cards": ["4-heart","5-heart","6-club","7-diamond"],"name":"Joe" }] }

(This JSON text will be used in a Java program in a future module.)

Why should you care about JSON?

This book is being written and published under the following assumptions:

  • You are interested in Java programming.
  • You are interested in web development involving Java programming.
  • At some point in the future, you may become interested in Big Data .
  • At some point in the future, you may become interested in NoSQL databases such as MongoDB and Couchbase .

As stated in the InfoWorld article of August 25, 2014:

"Web developers love JSON (JavaScript Object Notation). Like XML, it's a human-readable format for transmitting data, except it's a whole lot easier to work with than XML. ...Several NoSQL databases -- including the wildly successful MongoDB and Couchbase -- store data in JSON documents natively."

Questions & Answers

how do you get the 2/50
Abba Reply
number of sport play by 50 student construct discrete data
Aminu Reply
width of the frangebany leaves on how to write a introduction
Theresa Reply
Solve the mean of variance
Veronica Reply
Step 1: Find the mean. To find the mean, add up all the scores, then divide them by the number of scores. ... Step 2: Find each score's deviation from the mean. ... Step 3: Square each deviation from the mean. ... Step 4: Find the sum of squares. ... Step 5: Divide the sum of squares by n – 1 or N.
kenneth
what is error
Yakuba Reply
Is mistake done to something
Vutshila
Hy
anas
hy
What is the life teble
anas
hy
Jibrin
statistics is the analyzing of data
Tajudeen Reply
what is statics?
Zelalem Reply
how do you calculate mean
Gloria Reply
diveving the sum if all values
Shaynaynay
let A1,A2 and A3 events be independent,show that (A1)^c, (A2)^c and (A3)^c are independent?
Fisaye Reply
what is statistics
Akhisani Reply
data collected all over the world
Shaynaynay
construct a less than and more than table
Imad Reply
The sample of 16 students is taken. The average age in the sample was 22 years with astandard deviation of 6 years. Construct a 95% confidence interval for the age of the population.
Aschalew Reply
Bhartdarshan' is an internet-based travel agency wherein customer can see videos of the cities they plant to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400 a. what is the probability of getting more than 12,000 hits? b. what is the probability of getting fewer than 9,000 hits?
Akshay Reply
Bhartdarshan'is an internet-based travel agency wherein customer can see videos of the cities they plan to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400. a. What is the probability of getting more than 12,000 hits
Akshay
1
Bright
Sorry i want to learn more about this question
Bright
Someone help
Bright
a= 0.20233 b=0.3384
Sufiyan
a
Shaynaynay
How do I interpret level of significance?
Mohd Reply
It depends on your business problem or in Machine Learning you could use ROC- AUC cruve to decide the threshold value
Shivam
how skewness and kurtosis are used in statistics
Owen Reply
yes what is it
Taneeya
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




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