PreparedStatement is not reading all my parameters for PostGIS Geography

I have the following JDBC code. Note that I am attempting to use PostGIS geography:

PreparedStatement stmt = db.prepareStatement("INSERT INTO " +
                    "source_imagery (image_path, boundary, image_time)" +
                    " VALUES (?, ST_GeographyFromText('POLYGON((" +
                    "? ?, ? ?, ? ?, ? ?))'), ?)");

            stmt.setString(1, file.getAbsolutePath());
            stmt.setDouble(2, bounds.getY());
            stmt.setDouble(3, bounds.getX());
            ...

I am getting the following exception on the last line of code:

org.postgresql.util.PSQLException: The column index is out of range: 3, number of columns: 2.

I understand that it thinks I only have 2 parameters there, but you can see that I intended there to be 10. I'm not sure why it is not reading any of the parameters within the POLYGON. I know that this SQL statement works if I use it directly in the database, but I'm not sure what I have to change to make it work in my Java code. Any ideas?