How to clear textbox in selenium

Webdriver driver=new FirefoxDriver();

driver.get("https://www.google.co.in/");

WebElement searchbox=driver.finElement(By.name("q")).senkeys("selenium"));

searchbox.sendkeys(keys.chord(Keys.Control,"a"));

searchbox.sendkeys(keys.BACK_SPACE);

 OR

searchbox.clear();

driver.close();