public   class  CommandParam {
     private   static  String url = "";         // url
     private   static  String name = "";        // user name
     private   static  String password = "";    // user password
     private   static   long  startRevision =  0 ;  // number of start revision
     private   static   long  endRevision = - 1 ;   // number of last revision

     public   static  String getUrl(){
         return  url;
    } // getUrl(): String

     public   static   void  setUrl(String newUrl){
        url = newUrl;
    } // setUrl(String)
....