What could the errors informing about?

Question

errors
at sun.jdbc.odbc.JdbcOdbc.createSQLException(unknown source)
at sun.jdbc.odbc.JdbcOdbc.standartError(unknown source)
at sun.jdbc.odbc.JdbcOdbc.sqlGetDataString(unknown source)
at sun.jdbc.odbc.JdbcOdbcResultset.getDataString(unknown source)
at sun.jdbc.odbc.JdbcOdbcResultset.getString(unknown source)
at sun.jdbc.odbc.JdbcOdbcResultset.getString(unknown source)
          try {
          String url2="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=..\\bekir.mdb";
          String query2="select * from araclar where arac_id=" + k;
          //String query3="select * from kategori where kategori_id=" + l;
          Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          con2=DriverManager.getConnection(url2,"serdar","serdar");
          stmt2=con2.createStatement();
          rs2 = stmt2.executeQuery(query2);
               //while(rs2.next()) {
               aas=rs2.getString("arac");
               rs2.close();
               stmt2.close();
               con2.close();
          catch (ClassNotFoundException e2){  
          e2.printStackTrace(System.err);
          catch (SQLException e2){  
          System.err.println("SQL state: " + e2.getSQLState());  
          System.err.println("SQL error: " + e2.getErrorCode());  
          e2.printStackTrace(System.err);
          }these codes are in constructor public. in the same class but in a different method i use the same codes but with different variables and sql statement, and it works. but i didnt understand why here not?
thanks

Answer 1

Why did you do this?
// Why is the while loop commented out?
//while(rs2.next()) {               
aas=rs2.getString("arac");               
//}Your ResultSet cursor doesn't point to anything until you call next() to tell it to point to the first row.
It's also not clear where aas is declared. - MOD