How to register in Facebook?

Below is the code to make an account on Facebook using Selenium Wedriver:

public class FacebookRegistration {

public static void main(String[]args)
{
WebDriver driver = new FirefoxDriver();
driver.get("https://www.facebook.com/");
driver.manage().window().maximize();
driver.findElement(By.xpath("//*[@value='First Name']")).sendKeys("raj");
driver.findElement(By.xpath("//*[@value='Last Name']")).sendKeys("raja");
driver.findElement(By.xpath("//*[@value='Your email address']")).sendKeys("raja@mail.com");
driver.findElement(By.xpath("//*[@value='Re-enter email address']")).sendKeys("raja@mail.com");
driver.findElement(By.xpath("//*[@value='New Password']")).sendKeys("A123a!");
new Select(driver.findElement(By.xpath("//*[@name='birthday_day']"))).selectByValue("1");
new Select(driver.findElement(By.xpath("//*[@id='month']"))).selectByValue("2");
new Select(driver.findElement(By.xpath("//*[@id='year']"))).selectByValue("1987");
driver.findElement(By.xpath("//*[@id='u_0_g']/span[1]/label")).click();
driver.findElement(By.xpath("//*[@id='u_0_i']")).click();
}
}

How to Login and Logout in Gmail

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class Openbrowser
{
public static void main(String args[]) throws InterruptedException
{
WebDriver driver=new FirefoxDriver();
driver.manage().timeouts().implicitlyWait(30,TimeUnit.SECONDS);
driver.get("http://gmail.com/");
driver.findElement(By.id("Email")).sendKeys("raghav@mobikwik.com");
driver.findElement(By.id("Passwd")).sendKeys("9910979218");
driver.findElement(By.id("signIn")).click();
Thread.sleep(4000);
driver.findElement(By.xpath("//*[@id='gb']/div[1]/div[1]/div[2]/div[5]/div[1]/a/span")).click();
driver.findElement(By.id("gb_71")).click();
}
}