Selenium with Java Automation

package com.hello;

import java.util.Iterator;
import java.util.Set;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class GmailLogin {

        public static void main(String[] args) throws InterruptedException {
                // TODO Auto-generated method stub
System.setProperty("webdriver.gecko.driver", "C://Users/rahul/Downloads/geckodriver-v0.15.0-win64/geckodriver.exe");
                WebDriver driver =new FirefoxDriver();
                driver.get("https://accounts.google.com/ServiceLogin#identifier");
                driver.findElement(By.id("Email")).sendKeys("mittapalli.rahul@gmail.com");
                driver.findElement(By.id("next")).click();
                Thread.sleep(3000);
                driver.findElement(By.id("Passwd")).sendKeys("password");
                driver.findElement(By.xpath(".//*[@id='signIn']")).click();
                Thread.sleep(5000);
                driver.findElement(By.xpath("//*[@class='WaidBe']")).click();
                Thread.sleep(10000);
                driver.findElement(By.xpath("//*[@class='T-I J-J5-Ji T-I-KE L3']")).click();
                Thread.sleep(10000);
                driver.findElement(By.xpath(".//*[@name='to']")).click();
                driver.findElement(By.xpath(".//*[@name='to']")).sendKeys("srienievas@gmail.com");
                driver.findElement(By.xpath("//*[@name='subjectbox']")).sendKeys("testing script");
                driver.findElement(By.xpath("//*[@class='Am Al editable LW-avf']")).sendKeys("Hello World");
                Thread.sleep(10000);
                driver.findElement(By.xpath("//*[@class='T-I J-J5-Ji aoO T-I-atl L3']")).click();


        }

}

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