Error Cannot find firefox binary in PATH. Make sure firefox

This line not executing WebDriver driver = new FirefoxDriver();


Error:

Exception in thread "main" org.openqa.selenium.WebDriverException: Cannot find firefox binary in PATH. Make sure firefox is installed. OS appears to be: VISTA
Build info: version: 'unknown', revision: 'unknown', time: 'unknown'
System info: host: 'Sheenam-PC', ip: '192.168.0.100', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_66'
Driver info: driver.version: FirefoxDriver



Selenium Version: 2.53.0
Please let me know how to resolve this error? Is there any issue with Jars I am using for selenium 2.53.0. if yes , please let me know correct jars


Above line was getting executed in lower version of selenium ..2.53 version is creating problem