Use and Purpose of ConfigReader and config.properties File in Selenium Framework

In a robust Selenium framework, maintaining flexibility and scalability is key. One way to achieve this is by using a configuration management approach. In this blog, we’ll explore the use and purpose of the config.properties file and the ConfigReader utility class — two fundamental tools for managing configuration settings in Selenium automation.

What is config.properties?

The config.properties file is a simple key-value pair text file used to store configuration data such as URLs, browser types, timeouts, credentials, and more. Instead of hardcoding values in your test scripts, you externalize them in this file for better flexibility and reusability.

Purpose of config.properties

Purpose	Explanation
Centralized configuration	Stores all settings in one place to avoid hardcoding in the code.
Easy maintenance	You can update settings like URLs, browser types, timeouts without touching code.
Environment management	Easily switch between environments (e.g., QA, Staging, Production).
Test customization	Control test execution dynamically (e.g., choose browser or wait time).

 How to Create a config.properties File

1. In your Maven project, navigate to:

   • src/test/resources

2. Right-click the folder → New > Folder → Name it: configuration

3. Inside the configuration folder:

   Right-click → New > File

4. Name it: config.properties

5. Click Finish

Your config.properties file is now ready to use!

Sample config.properties file:

Once saved, this file will be used by your test framework to fetch required configurations.

What is ConfigReader?

ConfigReader is a Java utility class designed to read values from the config.properties file. It uses Java’s built-in Properties class to load and provide easy access to configuration data throughout your framework.

Purpose of ConfigReader

Purpose	Explanation
Reads Config Data from File	Loads the .properties file into memory using Java's Properties class.
Reusable Access Methods	Allows retrieval using methods like getProperty("key").
Avoids Hardcoding	Eliminates duplication and makes test scripts cleaner and more maintainable.
One-Time Initialization	Loads the file only once, improving efficiency and performance.

Example: ConfigReader.java

How to Use in Test Code:

In Your Test Code you need to call your ConfigReader as below:

String browser = ConfigReader.getProperty("browser");

String Url = ConfigReader.getProperty("url");

WebDriver driver = new ChromeDriver();

driver.get(Url);

With this setup, your test code remains clean and fully data-driven.

Summary

File	Purpose
config.properties	Stores external configuration like browser, URL, credentials, etc.
ConfigReader.java	Java class that reads values from the properties file and makes them accessible

By externalizing configuration and using a ConfigReader, your Selenium framework becomes cleaner, more maintainable, and adaptable to different test environments.