Handle Java warning popup in selenium webdriver

FirefoxProfile fProfile = new FirefoxProfile();


fProfile.setAcceptUntrustedCertificates( true );
fProfile.setPreference( "security.enable_java", true ); 
fProfile.setPreference( "plugin.state.java", 2 );

WebDriver driver = new FirefoxDriver( fProfile );

plugin.state.java = 0 never activate, 1 = ask to activate, 2 = always activate