如何添加一条新记录到数据库？？

oracle.jdbc.OracleDriver drive = new oracle.jdbc.OracleDriver();
            DriverManager.registerDriver(drive);
            Connection conn = DriverManager.getConnection("jdbc:oracle:oci8:@liuwei", "scott", "tiger");
            PreparedStatement pstm1 = conn.prepareStatement("insert into wei(id,image) values(?,?)");
            File file1 = new File("d:/idea/111.rar");
            pstm1.setInt(1, 1);
            pstm1.setBinaryStream(2, new FileInputStream(file1), (int) file1.length());
            int ret1 = pstm1.executeUpdate();
            System.out.println(ret1);