import xBaseJ.*;
import java.io.*;
import java.util.*;
class .

public void run() throws xBaseJException,IOException
{

rDB = new DBF(fnameFil,true);


CharField B = new CharField ("R",4);
CharField N = new CharField ("NameFil",240);
CharField P = new CharField ("Ps",10);
CharField A = new CharField ("Adress",240);
CharField S = new CharField ("SitiR",100);



rDB.addField(B);
rDB.addField(N);
rDB.addField(A);
rDB.addField(S);
rDB.addField(P);
}

Обратите внимание на верхний пакет.