JSON Handling (javscripit object notation)

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JSON Handling 

JSON (JavaScript Object Notation) is a lightweight data format used to store and exchange data. It is commonly used in web applications for sending data between a client and a server.

JSON Structure:

JSON data is written as key-value pairs inside curly braces {}.

Example:

json

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{

  "name": "Mahesh",

  "age": 25,

  "city": "Hyderabad"

}

Handling JSON in Python:

Python has a built-in module called json for handling JSON data.

1. Convert JSON to Python (Parsing):

python

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import json

data = '{"name":"Mahesh", "age":25}'

parsed = json.loads(data)

print(parsed["name"])

2. Convert Python to JSON (Serialization):

python

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import json

person = {"name": "Mahesh", "age": 25}

json_data = json.dumps(person)

print(json_data)

Handling JSON in JavaScript:

Use JSON.parse() to convert JSON to object, and JSON.stringify() to convert object to JSON.

javascript

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let text = '{"name":"Mahesh","age":25}';

let obj = JSON.parse(text);

console.log(obj.name);

Why Use JSON?

✅ Easy to read and write

✅ Language-independent

✅ Used in APIs and config files

✅ Supports nested objects and arrays

Conclusion: JSON is essential for modern web and app development, enabling structured data exchange in a human-readable format.

Read More

Java Strings and StringBuilder

Arrays in Java: Single and Multi-dimensional

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