I am making a shopping cart web, but some problems I meet about how to calculate the total price
I use ajax in product list web and if I choose one product , it will send the Id that I read from MySql to servlet and use session to save it . and I click the button jump to the cart, the page cart.jsp will read information from session ,and find product information from mysql by id , now my question is where I calculate the total price, servlet or jsp?
I'm struggling with inheritance in my assignment. The assignment states that I should use the calculatePrice() to calculate the total price and use another method to display the total. The I must overload the calculatePrice() and add a fee in the SpeedOrder() class.
My main class
package useorder; import javax.swing.*; public class UseOrder { /** * @param args the command line arguments */ public static void main(String[] args) { Order.display();
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The problem is mainly displaying the TotalPrice field and. I can't display TotalPrice if it's not static but if it's static I can't inherit it to the SpeedOrder class to assign the total in the overloaded calculateprice method. How can I display the total in my order class and use it in my SpeedOrder class?
I have an assignment to create a JFrame pizzaorder and at the end of this order after the totalprice is calculated I need to format the number to ##.## but I keep getting a cannot find symbol error.
Source Code:
import java.awt.*; import javax.swing.*; import javax.swing.event.*; import java.awt.event.*; public class pizzaorder extends JFrame implements ItemListener, ListSelectionListener //top section will have centered title telling the name, and under it seperate instructions to choose your pizza and toppings
In this main class, create 5 objects of the class Menu, as defined in the table below.
Name amount of calories cooking time price per person number of drinks
Fufu and Groundnut Soup 564.65 2515.572 Red Red 345 12 9.980 Rice and Beef Stew 560.4 1512.651 Ga Kenkey and Fish 780 10 10.15 1 Banku and Tilapia 450.4 35 25.17 2
Exercise d In your main class create an array of length 5, and store the 5 objects (Exercise c) into the array. You can use any name for your array.
From the array, use a loop to: Print the details of all the objects using the method you defined in Exercise b.
Exercise e Use another loop to: -Print only the name and cooking time of all the dishes that take less than 30 minutes to cook. Hint: you may use the getter methods for the name and cooking time attributes, and then, print these values (name, cooking time).
Exercise f Use another loop to : -Calculate and print the total price of all the objects (in the array). -Calculate the total price of all the objects with VAT included for each dish (VAT rate is 17.5%).
Submission -Create a folder with your index number as its name. -Copy your Java Project folder into the created folder. -Print a hard copy of your classes. -Submit both soft copy and hard copy of your project
I am working on a project. It is a shopping cart java program that should be setup with an array size of 5 and increased at increments of 3 if you go over 5 items. When I go over 5 items in increases however it changes the item names to null. See output below.
Here is the actual assignment:
In this exercise you will complete a class that implements a shopping cart as an array of items. The file Item.java contains the definition of a class named Item that models an item one would purchase. An item has a name, price, and quantity (the quantity purchased). The file ShoppingCart.java implements the shopping cart as an array of Item objects.
1.Complete the ShoppingCart class by doing the following:
a.Declare an instance variable cart to be an array of Items and instantiate cart in the constructor to be an array holding 5 Items. b.Fill in the code for the increaseSize method. Your code should be similar to that in the CDCollection class handout but instead of doubling the size just increase it by 3 elements. c.Fill in the code for the addToCart method. This method should add the item to the cart and update the totalPrice instance variable (note this variable takes into account the quantity). d. Add a getTotalPrice() method to return the totalPrice. e..Compile your class.
2.Write a program that simulates shopping. The program should have a loop that continues as long as the user wants to shop. Each time through the loop read in the name, price, and quantity of the item the user wants to add to the cart. After adding an item to the cart, the cart contents should be printed along with a subtotal. After the loop, print a "Please pay ..." message with the total price of the items in the cart. Compile and run this class.
OUTPUT
Enter the name of the item: Apples Enter the unit price: .5 Enter the quantity: 1
Shopping Cart
ItemUnit PriceQuantityTotal Apples$0.501$0.50 Total Price: $0.50 Continue shoppping (y/n)? y Enter the name of the item: Oranges Enter the unit price: .5 Enter the quantity: 1
I am developing shopping cart in which I am storing image in database and retrieving.
When I select any product category from menu. example, I selected Computer then all list of product related to computer will be return i.e productName, Price and image, By using JSON.
this is my json response and output in comment.
success : function(data) { if (data.length != 0) { var d = eval(data); $("#productList").html(""); for ( var key in d) {
[Code] ....
Alternatively I created custom tag to resolve this.Custom tag is working fine in jsp but in java script it saying error raised Unterminated custom tag. I think I used this custom tag in javascript but i am not sure about this error,
custom tag code for image : imgByte = product.getImage().getBytes(1, (int) product.getImage().length()); String encodeimage = new String(Base64.encodeBase64(imgByte)); out.println("<tr><td><img src="data:image/jpeg;base64," +encodeimage + ""/><tr> <td>");
MY Question 1 - How can I use Custom tag in javascript ? Or 2 - How can we extract image from json object, like I did in custom tag .
I created a website using jsp and servlet. I made a shopping cart and got the items to display. But how can i remove the items from the cart? Next to each item is a remove button. When that is pressed the item selected needs to be removed and cart needs to refresh.
I am adding my shopping cart in session like bellow in servlet
HttpSession session = request.getSession(); session.setMaxInactiveInterval(60*30); // 30 minutes if (session.getAttribute("cart") == null){ session.setAttribute("cart", new ShoppingCart()); } cart = session.getAttribute("cart");
I seems if more than one person accesses it from server, if they items in the shopping cart, all the product is added to a single session. I mean if i added 4 items first and other person adds 2 items, second person sees 6 products in his cart. Where am I going wrong?
I am making a shopping cart app in JSP and servlets to bring it all together. Finally.
I have a registration servlet (c1), a registration form jsp (c2), a login jsp (c3). c1 checks if a username is in the database or not.
If the username is not there, then register the user and send them to c3. I want c3 to display a "registration successful" message if a user has just registered successfully and is coming from c1. ELSE, take the user back to c2 with a message which tells them to choose a different username or password etc.
How do I implement the logic of showing a message depending on where a user is coming from ? The servlets and jsps are ready and I only need to add this logic for a custom message. Of course, I could make a JSP for Registration Successful and one for Registration Failure. But, that seems to be unnecessary.
The total cost of your order is: $8.4 ---------------------------------------------------- Notice that the total should be $9.4, rather than $8.4. It is odd because I was able to add a surcharge to my coffee(50 cents), and it does in fact recognize it when calculating the price of the coffee. So why won't my totalPrice in the client class recognize it?
Here is my Client class:
public class CoffeeShop { public static void main(String[] args) //One coffee Coffee coffee = new Coffee(16,"mocha"); coffee.set_price_per_oz(coffee.size);
In the code below, under calculations, I have x=totalPrice+xXxXxX. Obviously the x's were just place holders, but I wanted to know if there was any way to add something there so the program would tally the totalPrice, store it in the x variable outside the loop, so when the loop ended it would display the total price from all the loops added together where I have System.out.println("TOTAL OF ALL ORDERS: $"+ round.format(x)); at the very end.
Java Code:
import java.util.Scanner; import java.text.DecimalFormat; public class ModifyOrderV2TEST { public static void main(String [] args) { //Rounding DecimalFormat round = new DecimalFormat("0.00");
Why is my program not calculating the total and average of the price of the items and not printing it out?
Java Code: /* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package assignment4;
[code]...
It prints out everything but the total of the items and I dont know why. :(
How would I program a counter that will return the total number of search, failed searches and correct searches. The second thing is how can a return the price of the search methods with out calling for it specifically. Here is my current code.
package stu.paston.program7; import java.util.Scanner; public class MainClass { public static void main(String[] args) { InventoryClass productData= new InventoryClass();
Recently I have missed a few weeks of my class due to family emergencies. Because of this I have missed very important lectures. My professor has assigned me the following assignment:
Prices Write a Java program that specifies three one-dimensional arrays names price, amount, and total. Each array should be capable of holding 10 elements. Using a loop, input values for the price and amount arrays. The entries in the total array should be the product of the corresponding values in the price and amount arrays. After all the data have been entered, display the following output:
Total Price Amount
==== ==== ======
Under each column heading display the appropriate value.
I know how to display everything using printf, how to create the actual arrays and define the array size, but I am confused on how and what loop to use and how to construct it. This is what I have managed to write up so far:
import java.util.Scanner; // Imports the Scanner class import java.text.DecimalFormat; // Imports the DecimalFormat class
public class Prices { public static void main(String [] args) { double[] price = new double[10]; double[] amount = new double[10]; double[] total = new double[10];
// Create a new Scanner object Scanner keyboard = new Scanner(System.in); } //End of main method } // End of public class
For this program I am calculating the annual costs of 5 office supplies (user input) each with a 5.7% inflation. The user inputs the cost of each object and my program must calculate and display the price of each object each year for 5 years. I already have this part. What I need is how to add the total costs of all 5 supplies per year and display each total cost. Here is the program:
import java.util.Scanner;//Using keyboard to enter data //Start of Class public class OfficeSupplyCalculator { //Start of Method public static void main(String args[]) { Scanner keyboard = new Scanner(System.in); System.out.println("Enter the first item");
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At the moment all I get for the grand total loop is the same number showing up 5 times. I feel like the problem is how I am declaring the grandtotalperyear variable but I'm not sure what is wrong.
I am not getting any syntax errors but the program simply does nothing when I run it.
I literally just get "run: BUILD SUCCESSFUL (total time: 3 seconds)".
So basically, I need to create a program that calculates the price of carpeting for rectangle rooms.(multiply the area of the floor by the price per square foot of the carpet).
-The RoomDimension class should have two fields: one for length and one for width, and a method that returns the area of the room -The RoomCarpet class that has a RoomDimension object as a field, a field for the cost of carpet per square foot, and a method that returns the total cost of the carpet
Here is what I have:
package roomdimension.java; public class RoomDimension {
private double length=0; private double width=0; private final double area = length * width;
I was wondering how can I calculate total age in months and store it as variable? this is what I have so far:
* * You will ask the user to provide their name (as a single word, assume first name here) * You will ask the user their age in full years (no fraction or months) * You will ask the user how many full months since their last birthday (again, whole numbers here). * * You will use this information to calculate the user's age in months and use that information to print out a greeting. */ import java.util.Scanner;
So basically, I've been trying to create a for loop that asks the user for a number between 1 and 30, then calculates the total of the series of numbers. For example, if 15 is entered, the calculation should be 1/15+2/14+3/13+...15/1 which would equal approximately 38.1. The problem I'm having is that the code doesn't loop whenever I type a number for some reason, which results in a very incorrect calculation. Here is my code so far:
import java.util.Scanner; public class HmwLoop { public static void main(String[] args) { double sum = 0; for (double num1 = 1, num2 = 30; num1 <= 30 && num2 >= 1; num1++, num2--)
The pay rate is php 35.00 per hour. any hours worked after 40 hours is paid at rate of 2 times the normal hourly rate. Calculate and display the Normal Pay, The overtime pay, and the total pay.
OUTPUT MUST BE:
Sample 1 :
Enter Hours Worked: 40 (Sample) Normal Pay: 1400 (Sample) Overtime Pay: 0 (Sample) Total Pay: 1400 (Sample)
Sample 2 :
Enter Hours Worked: 41 (Sample) Normal Pay: 1400 (Sample) Overtime Pay: 70 (Sample) Total Pay: 1470 (Sample)
Here is my code or something, but i cant finish it.
import java.util.Scanner; public class Workpay { public static void main(String[]args) { Scanner in = new Scanner (System.in); int hours; int normalpay = 35;
This is what I've tried so far. What i want to do is to calculate all Total Amounts by adding all the rows (5th column only),as 5th column has total amount for 1 product, and set the text for a JTextField whenever the 5th column of any row changes its value.But this isn't working my way. I have also tried keyListener to trigger that change at Enter key typed but that also don't work for me.
Your sales associates need a program where they can enter customer information and calculate the customer's total bill. When the sales associate enters the program they should be presented with this main menu.
Enter customer information Display Total Bill Quit
If the sales associate selects option 1, the program should allow the sales associate to input their name, address, and e-mail address. Your program should then display this customer information to the screen with a message that the customer has been added to the customer list.
If the sales associate selects option 2, the program should ask the sales associate for the customer's name, product that the customer is purchasing, the quantity, and the price of the product. The total bill will then be displayed to the screen and should include the following:
- The customer's name. - The product the customer is purchasing, the quantity, and total cost - The amount of tax 8% - The total cost with tax.
Example Total Bill Output:
John Doe
Product Purchased Quantity Total Cost Shoes 2 $100.00 Tax 8%: $8.00 Total Cost: $108.00
