windows handle in selenium code example

Example: how to handle windows in selenium

How do you handle windows?
- We use window handles for handling windows & tabs.

- A window handle is a randomly generated
  unique id for each window.
  
- We can use WindowHandles to switch in
  between different windows.
  
  
SYNTAX =
driver.getWindowHandle;-> returns current window handle
driver.getWindowHandles; return all current opened windows