How to open a new tab using Selenium WebDriver?

Question

How to open a new tab in the existing Firefox browser using Selenium WebDriver (a.k.a. Selenium 2)?

Answer 1

Handling browser window using Selenium Webdriver:

String winHandleBefore = driver.getWindowHandle();

for(String winHandle : driver.getWindowHandles())  // Switch to new opened window
{
    driver.switchTo().window(winHandle);
}

driver.switchTo().window(winHandleBefore);   // move to previously opened window