how to achieve ddt in testng code example

Example 1: data driven testing

Whenever a functionality or a module in an app
requires testing with multiple sets of data (Parametrization),
Multiple inputs then we need to perform data driven testing and
automation.
These scenarios are one of the things That must be automated.
I would do it by seperating Test data from code and stored into external
sources like
Cucumber Examples table, Excel files, CSV files, Database.
Data driven testing has lots of benefits like
More organized, Data centralized, and so on

Example 2: what is data driven testing

Whenever a functionality or a module in an app
requires testing with multiple sets of data (Parametrization),
Multiple inputs then we need to perform data driven testing and
automation.
These scenarios are one of the things That must be automated.
I would do it by seperating Test data from code and stored into external
sources like
Cucumber Examples table, Excel files, CSV files, Database.
Data driven testing has lots of benefits like
More organized, Data centralized, and so on