ChangeBrowserLocale_Firefox.java

import java.io.File;
import java.net.URL;

import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxProfile;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;

public class ChangeBrowserLocale_Firefox {

	public static void main(String[] args) {

    // CHECK YOUR BROWSERSTACK CREDS HERE- https://www.browserstack.com/accounts/settings
		String USERNAME = "<BROWSERSTACK_USERNAME>";
		String AUTOMATE_KEY = "<BROWSERSTACK_ACCESS_KEY>";
		
		String HUB_URL = "https://" + USERNAME + ":" + AUTOMATE_KEY + "@hub-cloud.browserstack.com/wd/hub";
		
		WebDriver webDriver = null;
		FirefoxProfile firefoxProfile = null;
		
		String AUT_URL = "http://www.facebook.com";
		
		URL URLObj = null;
		DesiredCapabilities caps = null;

		try {

			URLObj = new URL(HUB_URL);
			
			firefoxProfile = new FirefoxProfile();
      // CHECK LOCALE CODE HERE- https://stackoverflow.com/questions/3191664/list-of-all-locales-and-their-short-codes
			firefoxProfile.setPreference("intl.accept_languages", "zh_CN");
			
      // CHECK THE SUPPORTED CAPS HERE- https://www.browserstack.com/automate/capabilities
			caps = new DesiredCapabilities();
			
			caps.setCapability(FirefoxDriver.PROFILE, firefoxProfile);
		
			caps.setCapability("project", "Build v1");
			caps.setCapability("build", "Test Run");
			caps.setCapability("name", "Test: Change Browser Locale");
			
			caps.setCapability("browserstack.captureCrash", "true");
			
			caps.setCapability("os", "Windows");
			caps.setCapability("os_version", "10");
			caps.setCapability("browser", "Firefox");
			caps.setCapability("browser_version", "62");
			
			caps.setCapability("browserstack.debug", "true");
			caps.setCapability("browserstack.console", "verbose");
			
			webDriver = new RemoteWebDriver(URLObj, caps);
			
			webDriver.get(AUT_URL);

			System.out.println("TITLE :: " + webDriver.getTitle());
	
			take_screenshot(webDriver);
			
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if(webDriver != null){
				webDriver.quit();
			}
		}

	} // MAIN END

	public static void take_screenshot(WebDriver webDriver){
		try {
			TakesScreenshot scrShot =((TakesScreenshot)webDriver);
			File SrcFile=scrShot.getScreenshotAs(OutputType.FILE);
		} catch (Exception e) {
			 e.printStackTrace();
		}
	} // FUNC END

} // CLASS END