Google example

gettext() code is not working for me...can u let me know what the issue is?

public class Google {

public static void main(String[] args) {

WebDriver driver = new FirefoxDriver();
driver.manage().timeouts().implicitlyWait(10,TimeUnit.SECONDS);

driver.get("https://www.google.com/");
driver.manage().window().maximize();



driver.findElement(By.xpath("//input[@name='q']")).sendKeys("hello");
driver.findElement(By.xpath("//button[@class= 'lsb']")).click();
driver.findElement(By.xpath("//input[@name='q']")).sendKeys(Keys.ENTER);
driver.findElement(By.xpath("//ol[@id='rso']/div[2]/div[1]/div/h3/a]")).getText();