Android JSON Concept

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Android Training in Chandigarh
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JSON Javascript Object Notation
JSON is "a lightweight data-interchange format".
JSON is syntax for accumulating and transferring
text information. Rather than attempt to chain
references as comma-delimited strings, or have to
deal with the complexity (and overhead) of XML ,
JSON is smaller than XML, and faster and easier
to parse.
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JSON Syntax

• JSON syntax is a subset of Javascript syntax.
  JSON data is written as name/value pairs.
• A name/value pair consist of a field name (in
  double quotes), followed by a colon, and followed
  by a value

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JSON Syntax Rules

• 1. Data is in name/value pairs.
• 2. Data is separated by commas.
• 3. Curly braces hold objects.
• 4. Square brackets hold arrays.

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Array

• Array elements are generally of a basic type
  (number,string, Boolean or null), however can
  also be a nested array or object. Elements are
  comma- delimited and contained with in brackets.

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Array with Objects

• Each of it contain multiple comma-delimited
  key/value pairs. Objects with an array can be
  accessed using the array name and index. This
  array having comma- delimited objects

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