There are cases where we need to open new window and perform operations or there may be cases where after clicking on any button / link, it opens new window and need to perform operations on the new window.

Let us look into such example:

Test case: We need to open 'http://linkedin.com' and click on 'Help Center' link at the bottom which will open new window.
1. Verify the title of the new window
2. Verify text 'Welcome' on the page.
3. Search for a Question with text "Frequently Asked Questions" and verify the result.

There are many cases, where a application displays multiple windows when you open a website. Those are may be advertisements or may be a kind of information showing on popup windows. We can handle multiple windows using Windows Handlers in selenium webdriver.