Why do i get the UnsupportedOperationException

Question

Hello
with the code below i get the UnsupportedOperationException. Why? Is it because i (have to) use MS-Access 2000?
If yes, can someone tell me how to do it another way?
I am pretty new to JDBC so help would be a nice gift.
Sincerely
Matthias
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
conn = DriverManager.getConnection(jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)}; DBQ=C:\\test.mdb);
String sql="INSERT INTO Material (Name,Size,price,Category) VALUES (?,?,?,?);";
PreparedStatement ps=conn.prepareStatement(sql,PreparedStatement.RETURN_GENERATED_KEYS);
ps.setString(1,mat.getName());
ps.setString(2,mat.getSize());
ps.setDouble(3,mat.getPrice());
ps.setInt(4,mat.getCategory());
ps.executeUpdate();
rs=ps.getGeneratedKeys();
int id=-1;
if (rs != null)
     if (rs.next())
          id=rs.getInt("ID");
mat.setId(id);

Answer 1

The JDBC-ODBC bridge driver doesn't support getting
generated keys - that's why you got it.Is there another driver that is able to work with MS-Access DB�s and that suports generated keys?
You can get it yourself - follow your INSERT w/a
SELECT with a WHERE clause that will only bring back
the key that you just created:
SELECT MAX(ID) FROM MATERIAL;
While i searched the Forum i found out, that this is a rather bad solution so i decided not to use it...
Thanks anyway
Sincerely
Matthias