Results 1 to 2 of 2

Thread: problem with throws

  1. #1

    Thread Starter
    Member
    Join Date
    Apr 2007
    Posts
    39

    problem with throws

    Hi everyone
    could anyone please tell me why I get notFound DuplicateException,notFoundException error. Thanks

    Code:
    /*
     * CustomerDA.java
     *
     * Created on November 17, 2007, 1:11 PM
     *
     * To change this template, choose Tools | Template Manager
     * and open the template in the editor.
     */
    
    package project;
    import java.sql.*;          // foe SQl
    import java.io.*;           //needed for i/o
    
    import java.util.Vector;    // for 
    
    
    /**
     *
     * @author omer ali
     */
    public class CustomerDA 
    {
       
         static Customer aCustomer;
         // the data source is projectDatabase
         static String url = "jdbc:odbc:projectDatabase"; 
         static Connection connection;
         static Statement statement;
        
         //declare variables for Address attribute values
         static String post_code;
         static int door_number;
         static int customer_num;
         static  String phone_number;
         static String street_name;
        // Implement the tatic methods in Customer*************
         //initialize,terminate
         //establish the database conection
          public static void initialize()
        {
            try 
            {
                //load the Jdbc _ odbc bridge driver for window 
                Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                //create connection instance
                 connection= DriverManager.getConnection(url,"","");
                // create statement object instance for this connection
                 statement = connection.createStatement();
                 
            } catch (ClassNotFoundException e)
            {
                System.out.println(e);
            }catch (SQLException e)
            {
                System.out.println(e);
            }
        }
         // find an instant in the database
         public static Customer find(String key)  throws NotFoudException
         {
             aCustomer = null;
             //define the SQL query satament using the post_code
             String sqlQuery = "SELECT door_number,street_name,post_code,phone_number " + "FROM  customerTable " 
                                                                + "WHERE post_code = '" + key + " '";
            // excute the SQl query statement
             try 
             {
                ResultSet rs = statement.executeQuery(sqlQuery);
                //next method sets cursor & returns true if there is data 
                boolean  gotIt = rs.next();
                if(gotIt)
                {
                    //extract the data
                     int customer_num = rs.getInt(1);
                     int door_number = rs.getInt(2);
                     String street_name = rs.getString(3);
                     String phone_number = rs.getString(4);
                     String post_code = rs.getString(5);
                     // create customer instant
                     aCustomer = new Customer(customer_num,door_number,street_name,post_code,phone_number);
                }
                else 
                {
                    //nothing was retrieved
                    throw (new NotFoundException("Not Foun")); 
                }
               
                rs.close();
             }
             catch (SQLException e) 
             {
                 System.out.println(e);
                 
             }
            return aCustomer;                                                                
         }
         //get All instant from database 
         public static  Vector getAll()
         {
             Vector customers = new Vector();
             //define SQL query staement for all 
             String sqlQuery = "SELECT door_number,street_name,post_code,phone_number" + " FROM customerTable";
             try
             {
                 //excute the SQL query staement
                 ResultSet rs = statement.executeQuery(sqlQuery);
                 boolean moreData = rs.next();
                 while(moreData)
                 {
                     //extract the data
                     int customer_num = rs.getInt(1);
                     int door_number = rs.getInt(2);
                     String street_name = rs.getString(3);
                     String phone_number = rs.getString(4);
                     String post_code = rs.getString(5);
                     // create customer instant
                     aCustomer = new Customer(customer_num,door_number,street_name,post_code,phone_number);
                     customers.addElement(aCustomer);
                     moreData= rs.next();
                 }
                 rs.close();
             
               }
                catch(SQLException e)
               {
                   System.out.println(e);
               }
             return customers;
         }
          
         // close database connection
         public static void terminate() 
        {
            try 
            {
                //close everything
                statement.close();
                connection.close();
            }
            catch (SQLException e) 
            {
                System.out.println(e);
            }
        }
        // implement the instant method in Customer*******
         //addNew, upDate
         // add new instantto database
       public  static void addNew(Customer aCustomer) throws  DuplicateFormatFlagsException
       {
            //retrieve the customer atttribute values
            door_number = aCustomer.getDoor_number();
            street_name = aCustomer.getStreet_name();
            post_code = aCustomer.getPost_code();
            phone_number = aCustomer.getPhone_number();
            
            
            /** create the SQL insert statement using attribute values */
            String sqlInsert = "INSERT INTO customerTable "          + 
            "(door_number,street_name,post_code,phone_number)"  +
            "VALUES ('" + door_number + "', '"  + street_name + "' , '" + post_code + "' , '" +
                    phone_number  + "')";
            //see if the customer already exist 
            try 
            {
                Customer c = find(post_code);
                throw (new DuplicateException("Customer alreadt exist")); 
                
            }
            // if NotFoundException add Customer to database
            catch (NotFoundReasonHelper  e)
            {
                try 
                {
                    //excute the upDate statement 
                    int result = statement.executeUpdate(sqlInsert);
                }
                catch (SQLException ee) 
                {
                    System.out.println(ee);
                
                }
            
            }
       }
            
            //upDate instance in the database
            public static void update(Customer aCustomer)  throws NotFoundException
            {
                //retrieve the customer atttribute values
            door_number = aCustomer.getDoor_number();
            street_name = aCustomer.getStreet_name();
            post_code = aCustomer.getPost_code();
            phone_number = aCustomer.getPhone_number();
            
            // define the sql query staement using the post Code key
            String sqlUpdate = "UPDATE customerTable " + 
                    "SET door_number = '" + door_number + "'  , " + 
                         "strrt_name  = '"+ street_name + " ' , " +
                         "post_code = '"  + post_code   + " ' , " +
                         " WHERE phone_number = '" + phone_number + " ' ";
             try 
            {
                Customer c = find (post_code);
                // if found it excute the upDate statement, a 1 return is  good delete 
                int result = statement.executeUpdate(sqlUpdate);
                
                
            }
            catch (SQLException  ee)
            {
                System.out.println(ee);
            
            }
       }
     }

  2. #2
    Arabic Poster ComputerJy's Avatar
    Join Date
    Nov 2005
    Location
    Happily misplaced
    Posts
    2,513

    Re: problem with throws

    Because those are NOT java exceptions (classes). I don't know what are they but you must implement them
    "I'm not normally a praying man, but if you're up there, save me... Superman!" - Homer Simpson
    My Blog

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  



Click Here to Expand Forum to Full Width