Handle File uploading using Webdriver.

We can handle this using java script or by send sendKeys()function:

1. Using sendKeys():

 WebElement upload = driver.findElement(By.id("fileUp"));
        upload.sendKeys("c:/darkbulb.jpg");
        driver.findElement(By.id("submit")).click(); 

2. Using Javascript:

 WebElement upload = driver.findElement(By.id("fileUp"));

((JavascriptExecutor)driver).executeScript("arguments[0].style.visibility = 'visible';

 arguments[0].style.height = '1px'; arguments[0].style.width = '1px';

 arguments[0].style.opacity =

 1", upload );