How to get the number of tabs opened in a window by Selenium

Selenium WebDriver Java code:

Scenario:

1. Go to Home page

2. Click on a link to open new tab/window

3. Open more tab/window if it needs

You have more than one tabs. You can count the number of tabs/windows opened in a browser by the following code snippet:

ArrayList<String> tabs = new ArrayList<String>(driver.getWindowHandles());
System.out.println("No. of tabs: " + tabs.size());