JDBC error in SQLServer connection

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");

m_BDConexion = DriverManager.getConnection("
com.microsoft.jdbc.sqlserver.SQLServerDriver");
...

I'm trying so execute some SQL instructions, but for commiting or rollbacking this instructions i'm using Transactions (savePoint), like this

try {
            return m_BDConexion.setSavepoint("transaccion");
 } catch (SQLException e) {
 }

when this instruction is executed, generates this error:

Exception occurred during event dispatching:
java.lang.AbstractMethodError: com.microsoft.jdbc.sqlserver.SQLServerConnection.setSavepoint(Ljava/lang/String;)Ljava/sql/Savepoint;
      at ...

What it could be?


thanks