How to open specific browser using selenium webdriver

Question

I am using lang :java framework: testNG

my system has 3-4 versions of Mozilla installed, how can i open instance of specific version of Mozilla. Suppose i have 3.5, 3.6,

Answer 1

Just assign a path to proper version of firefox.exe to webdriver.firefox.bin property.

System.setProperty("webdriver.firefox.bin", "c:\\path\\to\\firefox.exe");