Hey Yashmita, following code snippet automates the radio button and checkbox on a webpage using Selenium Webdriver:
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
public class FacebookSignUp{
     public static void main(String[] args) throws Exception {
          WebDriver driver=new FirefoxDriver();
          driver.manage().window().maximize();
          driver.get("http://www.facebook.com");
         WebElement male_radio_button=driver.findElement(By.id("u_0_e"));
         boolean status=male_radio_button.isDisplayed();
         System.out.println("Male radio button is Displayed >>"+status);
         boolean enabled_status=male_radio_button.isEnabled();
         System.out.println("Male radio button is Enabled >>"+enabled_status);
         boolean selected_status=male_radio_button.isSelected();
         System.out.println("Male radio button is Selected >>"+selected_status);
         male_radio_button.click();
         boolean selected_status_new=male_radio_button.isSelected();
         System.out.println("Male radio button is Selected >>"+selected_status_new);
     }
}