Blob and java.lang.AbstractMethodError

Question

I can't make this code (below) to work. I get an java.lang.AbstractMethodError trying. Does anyone have a clue about what might cause this error?
My setup:
jsdk 1.4
Oracle 8.1.7
Forte4J 4.0
Thanks in advance
Roland
---------- the code --------------
conn = cp.getConnection(_database, user, password);
conn.setAutoCommit(true);
PreparedStatement stat = conn.prepareStatement(sql.toString());
stat = conn.prepareStatement(sql.toString());
stat.setLong(1, id);
ResultSet res = stat.executeQuery();
if(res.next()){
setId(res.getLong("id"));
Blob b = res.getBlob("data");
stat.close();

Answer 1

PreparedStatement stat =
conn.prepareStatement(sql.toString());
stat = conn.prepareStatement(sql.toString());yes there is something wrong there but if your problem is
occurring with
Blob b = res.getBlob("data");then the problem is that the ResultSet you are using does not implement this method. getBlob is a method that was introduced in JDBC 2.0. in fact the Blob interface itself was introduced in JDBC 2.0.
you can try on of the following...
get a new driver that implements getBlob. for oracle i think you will be fine. you can get a new driver here http://otn.oracle.com/software/tech/java/sqlj_jdbc/content.html
the other option if you cannot get a new driver is to use the getBinaryStream() method of ResultSet to retrieve your data