public  static String ps(String s)
    {
        String rs=s.replaceAll("([A-Z])", "_$1");
        return s.charAt(0)=='_'?rs.toUpperCase():rs.substring(1).toUpperCase();
    }
    
    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub

        System.out.println("ScanSite=>"+ps("ScanSite")+"\n"+
                           "ScanType=>"+ps("ScanType")+"\n"+
                           "SendSite=>"+ps("SendSite"));
}