Inheritance Help

Question

Hello,
I am extremely new to java and this is my first project!
I am working on an auction system that composes of 2 types of auction - Style 1 and Style 2.
The only real difference in the 2 styles is the Database Insert statement.
I would like an auction Super class with Style 1 and Style 2 inheritting features but am unable to achieve this,
Is anyone able to offer my and help/advice on this??
Thanks
//Create An Auction Style 1
  public Vector createStyle1(String itemName, String description,
                                     String reservePrice, String buyOutPrice,
                                     String startPrice, String auctionType, String userID, int timeLimit) throws
      ClassNotFoundException, SQLException, RemoteException {
    dbConnect();
    AuctionTimer timer  = new AuctionTimer();
      ResultSet results = null;
      String auctionID = new String();
      Statement statement = link.createStatement();
      Statement statement2 = link.createStatement();
      String startTime = new String();
       String finTime = new String();
       String finDate = new String();
  //Insert items into database (minus start / end time)
      statement.executeUpdate("INSERT INTO auction (ItemName, Description, AuctionType, CurrentPrice, BuyItNowPrice, StartPrice, SellerID, HighestBid, ReservePrice, AuctionComplete, HighestBidderID, SecondHighestBid) VALUES ('"+itemName+"','"+description+"','"+auctionType+"','"+startPrice+"','"+buyOutPrice+"','"+startPrice+"','"+userID+"',1,'"+reservePrice+"',0,0,1)");
      results = statement2.executeQuery("SELECT MAX(AuctionID) FROM auction");
      //get AuctionID
      while (results.next())
    auctionID = results.getString(1);
    //Start Timer for AuctionID + get start / end time
    try {
         timer.timer(auctionID, timeLimit);
         startTime = timer.getStartTime();
         finTime = timer.getFinTime();
         finDate = timer.getFinDate();
       catch (Exception ex) {
         System.out.println("Timer Error");
       //Insert Start / end time into Database for AuctionID
       statement.executeUpdate("UPDATE auction SET StartTime = '" + startTime +
                               "' WHERE AuctionID = " + auctionID);
       statement.executeUpdate("UPDATE auction SET EndTime = '" + finTime +
                               "' WHERE AuctionID = " + auctionID);
       statement.executeUpdate("UPDATE auction SET EndDate = '" + finDate +
                               "' WHERE AuctionID = " + auctionID);
       //get full auction back from database to display for user
       results = statement.executeQuery("SELECT * FROM auction WHERE AuctionID = " +
                                        auctionID);
      Vector row = new Vector<Object>();
      while (results.next())
          row.addElement(results.getString(1));
          row.addElement(results.getString(2));
          row.addElement(results.getString(3));
          row.addElement(results.getString(4));
          row.addElement(results.getTime(5));
          row.addElement(results.getTime(6));
          row.addElement(results.getString(7));
          row.addElement(results.getString(8));
          row.addElement(results.getString(9));
          row.addElement(results.getString(10));
          row.addElement(results.getString(11));
          row.addElement(results.getString(12));
          row.addElement(results.getString(13));
          row.addElement(results.getString(14));
          row.addElement(results.getString(15));
          row.addElement(results.getString(16));
      closeDown();
      return row;
//Create a Auction Style 2
  public Vector createStyle2(String itemName, String description,
                                     String reservePrice, String startPrice, String auctionType, String userID, int timeLimit) throws
      ClassNotFoundException, SQLException, RemoteException {
      dbConnect();
      AuctionTimer timer  = new AuctionTimer();
       ResultSet results = null;
       String auctionID = new String();
       Statement statement = link.createStatement();
       Statement statement2 = link.createStatement();
       String startTime = new String();
       String finTime = new String();
       String finDate = new String();
       //Insert items into database (minus start / end time)
       statement.executeUpdate("INSERT INTO auction (ItemName, Description, AuctionType, CurrentPrice, BuyItNowPrice, StartPrice, SellerID, HighestBid, ReservePrice, AuctionComplete, HighestBidderID, SecondHighestBid) VALUES ('"+itemName+"','"+description+"','"+auctionType+"','"+startPrice+"',0,'"+startPrice+"','"+userID+"','"+startPrice+"','"+reservePrice+"',0,0,'"+startPrice+"')");
       results = statement2.executeQuery("SELECT MAX(AuctionID) FROM auction");
     //get AuctionID
       while (results.next())
     auctionID = results.getString(1);
       //Start The Timer
       try {
         timer.timer(auctionID, timeLimit);
         startTime = timer.getStartTime();
         finTime = timer.getFinTime();
         finDate = timer.getFinDate();
       catch (Exception ex) {
         System.out.println("Error With Timer");
     //Insert Start / end time into Database for AuctionID
       statement.executeUpdate("UPDATE auction SET StartTime = '" + startTime +
                               "' WHERE AuctionID = " + auctionID);
       statement.executeUpdate("UPDATE auction SET EndTime = '" + finTime +
                               "' WHERE AuctionID = " + auctionID);
       statement.executeUpdate("UPDATE auction SET EndDate = '" + finDate +
                               "' WHERE AuctionID = " + auctionID);
       //get full auction back from database to display for user
     results = statement.executeQuery("SELECT * FROM auction WHERE AuctionID = " +auctionID);
       Vector row = new Vector<Object>();
       while (results.next())
           row.addElement(results.getString(1));
           row.addElement(results.getString(2));
           row.addElement(results.getString(3));
           row.addElement(results.getString(4));
           row.addElement(results.getTime(5));
           row.addElement(results.getTime(6));
           row.addElement(results.getString(7));
           row.addElement(results.getString(8));
           row.addElement(results.getString(9));
           row.addElement(results.getString(10));
           row.addElement(results.getString(11));
           row.addElement(results.getString(12));
           row.addElement(results.getString(13));
           row.addElement(results.getString(14));
           row.addElement(results.getString(15));
           row.addElement(results.getString(16));
       closeDown();
       return row;
  }

Answer 1

In order go get full inheritance, you have to have direct ancestry--If you have A extends B and C extends B and D extends B, then there is not a direct inheritance path from A, C, and D--in other words D is not guaranteed to contain all elements of A and C, but if A extends B, and C extends A, and D extends C: then C must contain all of the elements of A and C, further more, C contains all of the elements of A... as you requested in your topic to your OP.