Skip to main content

Create an abstract class “order” having members id,description.Create two subclasses “Purchase Order” and “Sales Order” having members customer name and Vendor name respectively.Define methods accept and display in all cases. Create 3 objects each of Purchase Order and Sales Order and accept and display details.

 


import java.io.*;

abstract class Order
{
     String description;
     int id;
}

class PurchaseOrder extends Order
{
     String customername,vendorname;
     
     public void accept() throws IOException
     {
           System.out.println("Enter description, customername and vendorname,id :");
           BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
           
           description=br.readLine();
           customername=br.readLine();
           vendorname=br.readLine();
           id=br.read();
     }
     
     public void display()
     {
           System.out.println("id : "+id);
           System.out.println("Description : "+description);
           System.out.println("Customer name : "+customername);
           System.out.println("Vendor name : "+vendorname);
           System.out.println("-----------------------------------");
     }
}

class SaleOrder extends Order
{
     String customername,vendorname;
     
     public void accept() throws IOException
     {
           System.out.println("Enter description, customername and vendorname,id :");
           BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
           
           description=br.readLine();
           customername=br.readLine();
           vendorname=br.readLine();
           id=br.read();
     }
     
     public void display()
     {
           System.out.println("id : "+id);
           System.out.println("Decription : "+description);
           System.out.println("Customer name : "+customername);
           System.out.println("Vendor name : "+vendorname);
           System.out.println("-----------------------------------");
     }
}

public class Mains
{
      public static void main(String [] args) throws IOException
      {
           int i;
           System.out.println("Select any one : ");
           BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
           System.out.println("1. Purchase Order");
           System.out.println("2. Sales Order");
           int ch=Integer.parseInt(br.readLine());
           
           switch(ch)
           {
               case 1 : System.out.println("Enter no. of purchase orders : ");
                        int n=Integer.parseInt(br.readLine());
                        PurchaseOrder [] l=new PurchaseOrder [n];
                       
                        for (i=0; i<n; i++)
                        {
                            l[i]=new PurchaseOrder();
                            l[i].accept();
                        }
                       
                        for (i=0; i<n; i++)
                        {
                            l[i].display();
                            System.out.println("Object is created");
                        }
                        break;
                       
                case 2 : System.out.println("Enter no. of sale orders : ");
                        int m=Integer.parseInt(br.readLine());
                        SaleOrder [] h=new SaleOrder [m];
                       
                        for (i=0; i<m; i++)
                        {
                            h[i]=new SaleOrder();
                            h[i].accept();
                        }
                       
                        for (i=0; i<m; i++)
                        {
                            h[i].display();
                            System.out.println("Object is created");
                        }
                        break;
           }
      }
}

Comments

Popular posts from this blog

Write a program to read book information (bookid, bookname, bookprice, bookqty) in file “book.dat”. Write a menu driven program to perform the following operations using Random access file: i. Search for a specific book by name. ii. Display all book and total cost

  import java . io .*; import java . util .*; class Book {       String name , id ;       int qty ;       double price , total ;       Book ( String i , String n , String p , String q )      {               name = n ;               id = i ;               qty = Integer . parseInt ( q );               price = Double . parseDouble ( p );               total = qty * price ;      }       public String toString ()      {               System . out . println ( "name\t id\t qty\t price\t total" );               String s = name + "\t" + id + "\t" + qty + "\t" + price + "\t" + total ;           ...

Define a class MyDate (day, month, year) with methods to accept and display a MyDate object. Accept date as dd, mm, yyyy. Throw user defined exception “InvalidDateException” if the date is invalid. Examples of invalid dates : 03 15 2019, 31 6 2000, 29 2 2021

  import java . io .*; import java . util .*; class InvalidDateException extends Exception {       InvalidDateException ()       {               System . out . println ( "Invalid Date" );       } } class MyDate {       int day , mon , yr ;       void accept ( int d , int m , int y )       {             day = d ;             mon = m ;             yr = y ;       }       void display ()       {             System . out . println ( "Date is valid : " + day + "/" + mon + "/" + yr );       } } class Date {       public static void main ( String args []) throws Exception       {             Scanner sc = new Sca...

Write a Java program to design a screen using Awt that will take a user name and password. If the user name and password are not same, raise an Exception with appropriate message. User can have 3 login chances only. Use clear button to clear the TextFields.

  import java . awt .*; import java . awt . event .*; import javax . swing .*; class InvalidPasswordException extends Exception {       InvalidPasswordException ()       {             System . out . println ( "Username and password is not same" );       } } public class Password extends Frame implements ActionListener {       Label uname , upass ;       TextField nametext ;       TextField passtext , msg ;       Button login , Clear ;       Panel p ;       int attempt = 0 ;       char c = '*' ;             public void login ()       {             p = new Panel ();             uname = new Label ( "Username : " , Label . CENTER );             upass = n...