Handling drop-down with Selenium

Selenium Select class is used to perform actions on drop-down:
Different functions provided by Select class:

selectByVisibleText()/deselectByVisibleText()	selects or deselects an option by its visible text from drop down
selectByValue()/deselectByValue()	selects or deselects an option by the value displayed for "value" attribute
selectByIndex()/deselectByIndex()	selects or deselects an option by its index
isMultiple()	returns TRUE if the drop-down allows multiple selection at a time and return FALSE if not allowed
deselectAll()	deselects all selected options

Sample Code:
WebElement dropdown = driver.findElement(By.name("dropdown"));
Select select = new Select(dropdown);

// Here we will perform the multiselect operation in the dropdown.
select.selectByVisibleText("John");