selenlium 打开不同位置的firefox的三种方法

System.setProperty("webdriver.firefox.bin","D:/Program Files/Mozilla firefox4002/firefox.exe"); 
WebDriver driver = new FirefoxDriver();
driver.get("http://www.baidu.com");
driver.manage().window().maximize();

1         FirefoxBinary firefoxBinary = new FirefoxBinary(new File("D:/Program Files/Mozilla firefox4002/firefox.exe"));
2         FirefoxProfile firefoxprofile = new FirefoxProfile();
3         WebDriver driver = new FirefoxDriver(firefoxBinary,firefoxprofile);
4         driver.get("http://www.baidu.com");
5         driver.close();

1         DesiredCapabilities capability=DesiredCapabilities.firefox();  
2         capability.setCapability("firefox_binary",  
3         "D:\\Program Files\\Mozilla Firefox\\firefox.exe");  
4         WebDriver driver = new FirefoxDriver(capability);  
5         driver.get("http://www.baidu.com/");