\begin{verbatim}
import java.sql.*;

public class GeoCoordJ implements java.sql.SQLData {
  private double longitude, latitude;

  public String getSQLTypeName() {
     return "SCOTT.GEOCOORD";
  }

  public void readSQL(SQLInput stream,String typeName)
    throws SQLException {
      longitude = stream.readDouble();
      latitude = stream.readDouble();
  }

  public void writeSQL(SQLOutput stream)
    throws SQLException {
      stream.writeDouble(longitude);
      stream.writeDouble(latitude);
  } //... to be continued
\end{verbatim}