Error in Updating a Result Set Programmatically

Question

Could anyone please help me !
Why the row is always corrupted after executing the following code.
I am using JDK 1.4 , the default JDBC:ODBC driver from sun and MS Access 2000
try
rs.updateString(1,jtfCity.getText().trim());
rs.updateString(2,jtfCountry.getText().trim());
rs.updateInt(3,Integer.parseInt(jtfPop1995.getText().trim()));
rs.updateInt(4,Integer.parseInt(jtfPop2015.getText().trim()));
rs.updateRow();
catch(SQLException sqle)
System.err.println("Error in update row");
System.err.println(sqle);
System.err.println(sqle.getMessage());
System.err.println(""+sqle.getErrorCode());          

Answer 1

Thanks for replying
This is what I get:
java.sql.SQLException:[Microsoft][odbc Microsoft Access Driver]
Let me give you more background information. I am new in JDBC and is learning it by going through the examples in "JDBC API Tutorial and Reference 2nd Ed." published by SUN. I am using sdk1.31 (and have also tried sdk1.4) with Microsoft Access 2000. The demo program I am working with is trying to update a ResultSet programmatically using updateXXX().
scrolling and row deletion using rs.delete() are ok.
Here are my connection statements:
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          connection = DriverManager.getConnection(sourceURL);
          statement = connection.createStatement(     ResultSet.TYPE_SCROLL_SENSITIVE,
                                                            ResultSet.CONCUR_UPDATABLE);