Ejemplo de Conexión Web ORACLE (nativa con JAVA(OCI))

import java.sql.*;
class dbAccess {
  public static void main (String args []) throws SQLException
  {
        try {
              Class.forName ("oracle.jdbc.driver.OracleDriver");
        } catch (ClassNotFoundException e) {
              e.printStackTrace();
        }

        Connection conn = DriverManager.getConnection
             ("jdbc:oracle:oci8:", "prueba", "prueba");
        Statement stmt = conn.createStatement();
        ResultSet rset = stmt.executeQuery("select codigo, descripcion FROM prueba");
        while (rset.next())
              System.out.println (rset.getString(1));   
              System.out.println (rset.getString(2));   
        stmt.close();
  }
}