public final String N_REG_EX ="[1-9][0-9]*";
    public final String Z_REG_EX ="[+-]?\\d+";
    public final String R_REG_EX ="[+-]?(\\d+[.]?(\\d*|(\\d*[e][+-]?\\d+)))|([+-]?[.](\\d*|(\\d*[e][+-]?\\d+)))";
    public final String DATE_REG_EX ="((0?[1-9]|1[0-9]|2[0-9]|3[01])[.](0?[123578]|1[02])|((0?[1-9]|1[0-9]|2[0-9]|30)[.](0?[469]|11)))[.]\\d+";
    public final String TIME_REG_EX ="((0?[0-9])|(1[0-9])|(2[1-3]))[:]((0?[0-9])|([1-5][0-9]))";
    public final String EMAIL_REG_EX="([a-zA-Z0-9]+[._]?[a-zA-Z0-9]*)*[@]([a-zA-Z0-9]+[._]?[a-zA-Z0-9]*)*[.][a-zA-Z]+";