Can you explain what Selenium WebDriver is and how it is used for automating web application testing?

Selenium WebDriver is a tool for automating interactions with web browsers, allowing programmatic control of the browser for testing web applications.

It enables:

• Opening pages, clicking elements, entering text, navigating.
• Checking element states, retrieving properties.
• Writing automated tests that simulate user actions.

Using WebDriver helps automate regression testing, reducing manual effort and increasing reliability.

Example in Java:

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.By;

public class SeleniumExample {
    public static void main(String[] args) {
        WebDriver driver = new ChromeDriver();
        driver.get("https://example.com");
        driver.findElement(By.id("login")).click();
        driver.quit();
    }
}