I have a question about arraylist objects.... I want to create an address book that will contain a persons information (name, phone, address, email..etc..). The first two snippets of code are from the same class ContactArrayList and the last one is from the class Contact. Do I need to create a separate arraylist for each data type? Is it possible to use a single arraylist to contain all the object (person) information and then be searched for using a GUI? I would also like to be able to access this data to be manipulated using a JFrame (add, edit, and search).
public class ContactArrayList<E> implements List<E> {
public int size, capacity;
E contact;
private E[] contacts;
public ContactArrayList() {
size = 0;
capacity = 20;
I am trying to build an address book, and I started from what i know how to do.
public class Persona { String nome; String indirizzo; int cellulare; public Persona(String nom, String ind, int cel) { nome = nom; indirizzo = ind; cellulare = cel;
[code].....
Now I would like the program to take a string I insert on command line (for example java Cerca"Robert Baratheon") and compare it to the nome field of every Persona in the address book.
I found out what my next java class project is, and i am trying to get a head start on it. It is a simple address book. it needs to have 4 choices that get cycled through until quit is chosen:
1. add business contact 2. add personal contact 3. display contacts 4. quit
I have made an abstract contact class with a personal subclass and business subclass(all 3 are required). they have all been made, with set/get methods(the wonders of encapsulation and polymorphism have finally hit home!). The main program needs to add a new subclass object when chosen, and it needs to accept and store contacts by type
So, i am figuring 2 object arraylists for business/personal.
My question is: how do you create an object without having a name for it already programmed? Does it even need to have a unique name, since it would be stored in a seperate index and/or arraylist?
So for the last few weeks I have been working on a Java project for school. I see the light at the end of the tunnel, but I have run into some speed bumps with my main class. It was working fine, but I was pulling an all night and I deleted some of my code by mistake.Now I am not seeing what is exactly wrong. Anyways, the project was to create an address book complete with a menu system.
Here are all of my classes:
import java.util.ArrayList; /** * A model of an address book which keeps track of contacts. * An address book object should keep track of the concept of a current contact (think index). * You must use an ArrayList for your implementation. */ public class AddressBook { Contact contact = new Contact();
I'm trying to create contact information as object and another object as parcel then calculate the shipping fee. Problem is I don't have a good understanding in implementing object type to my code. Attached are what I've done and I know that my constructor in my parcel class and contact class are probably wrong too but I don't know what to do with it.
//contact class public class Contact { private String Name; private String Address; private String City; private String State; private double Xco; private double Yco;
I have a Database with Data of people (name, adress, phone number).
If a user enters a phone number (CLIENT) -> the correct person with the name and adress should appear.
I build up the infrastructure and now I'm at the point that I have to create a Webmethod for it. I just worked on projects like addition of two integers, hello "name", ... I think this example now is harder, BUT i can learn a lot!
I have this Contact List program and im stuck on how to make my contact list show their different details. I don't know what to do , I want my program to be like this. What should I do next to make my every entry have different information then show on to the right side of the panel the information when i click the show details button .
I am working on a contact list program with a GUI for a school project.I'm running into all kinds of issues when trying to update the JList in my GUI which displays the contacts.I think my issues are being caused by a lack of synchronization between the contact list that stores the data, and the contact list that is being displayed.I've tried all kinds of getters and setters, passing array indexes, passing array member objects etc.
General rundown of how I want the GUI/Code to work: When I select an object in the JLIst, the fields on the right should display that objects information.When the "Add Contact" button is created, a new blank contact should be created and added to the Contact List, and then displayed in the JList.When a field on the right side of the GUI is updated, the object in the contact list is updated simultaneously (using document listener), and therefore the JList would also be updated.
I'm working on a GUI Phonebook and need getting a button to work for deleting a contact. I identified the error I get in the Gui class where it says applyDeleteEntry(); on line 106 with comments. The entries are stored in a .txt file which is created for you.
Main class:
import javax.swing.*; import java.awt.*; public class Main{ public static void main(String args[]) throws Exception{ Phonebook mainPhonebook = new Phonebook(); Gui mainGui = new Gui();
When I run my program and choose option 2 to get contact details I am expecting it to display as follows (First Name, Last Name): Contacts how have been entered:
0) John Doe 1) George Smith 2) Nancy Davis
Please enter the number corresponding to the contact you would like to view:
Instead for a personal contact it is displaying as follows:Contacts who have been entered:
0) Doe 1 F St. (last name, address)
Please enter the number corresponding to the contact you would like to view:
Instead for a business contact it is displaying as follows:Contacts who have been entered:
0) 1 F St. jd@gmail.com (address, email)
Please enter the number corresponding to the contact you would like to view:
Then when I enter the number to display the contact for personal it is returning me only first name and business is only returning me first and last name. It should be returning the full contact info that was put in during the add contact step. I thought I programmed everything properly but it isn't displaying what I want to seeMy code is listed below.
ContactList
/* * 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 contactlist; import java.util.ArrayList; import java.util.Scanner;
I wrote a code from our text book for Pong. Im trying to figure out how to fill the ball with color. Im also wondering how to speed the ball up once there is contact with the paddle. The initial speed is ok but once contact is made with the paddle, it slows down. Makes it too easy to play. Here is my code so far. As far as the game goes, it works and is good. Just wanted to add a couple customizations.
I have a program for a phone directory. It needs to add, delete, append, and edit telephone records. I've gotten it to write and search the files. Just need to get it to delete and edit them.
Why my borrowBook, returnBook, getBookIndex, remove book and printAuthorBook methods wont work. They all have a parameter that is a string and Im guessing its a common problem in all the methods. I think all my code for Book class is right. Iv attached the two classes. I also attached the test library which tests the two classes.
public class Book { // The fields: private String author; private String title; public int pages; public String refNumber; public int numBorrowings; boolean available; // add more fields here
I am creating an apointment application. This programm will have the ability to book apointments for a number of different services, such as doctors, hairdressers, teachers etc for a number of cities.
These information will be placed on a combo box and ideally i would like to provide only the options available acording to the choices made so far.
So, for example we have A Pediatric in London A Vet in London A Sergeon in Berlin A Barber in Berlin A Heardresser in Rome A Programmer teacher in London An English teacher in Rome
My thinking is that the user choses the city, for example London, then there will be a type of service combo box. In this case (of London) it will hold Doctors and Teachers. If Doctors is chosen, the next field will hold the available Medical specialty, i.e. Pediatrics and Vets and according to that choice the apropriate doctor will pop up.
My problem is not how to programm that. i havent got there yet.
My problem is how to design it! I am thinking that each individual will be an object. each having the same fields, city, type of service etc. But in such a way i am not sure how i can manage to get all the appropriate information in order to poppulate the combo boxes.
I would have to search all the objects for each combo box? From a rough testing i did, i think i could easily get all the individuals that resign in London, but that would give me two records for the doctors(for example).
I'm trying to search a library program by book index and running into some trouble with my HashMap. Here's the code in question:
Java Code:
public String searchByBookIndex(int input) { NumberFormat fmt = NumberFormat.getCurrencyInstance(); Map<Integer, Book> bookMap = new HashMap<>(); for (int i = 0; i < author.booksByAuthor.size(); i++) { bookMap.put(author.booksByAuthor.get(i).getBookIndex(), book);
[Code] ....
The search itself works fine; however, the problem is that the values of everything in the HashMap are overwritten by the last book entry. For example, let's say there are four books (index in parenthesis):
The Book (1), A Wonderful Book (2), A Great Book (3), A Bad Book (4).
Once the code above iterates, the HashMap out is this (via println):
1 = A Bad Book, 2 = A Bad Book, 3 = A Bad Book, 4 = A Bad Book.
I'm working on a problem where I have to use the FileInputStream to opens a file that contains the name of a user's favorite book and then displays it.
If the file doesn't exist, then I prompt for the book title and write it to the file using FileOutputStream. This is what I have so far but I'm lost because if I put a file that exists in line 8 then it closes, but if I don't and the user puts their favorite book nothing happens. Or, as far as I can tell nothing does.
import java.io.*; class DisplayBook { public static void main(String[] args)
I have to fetch only the book name attribute and use it for display .However say for example ,I have got the list of Books ie(C#,Oracle,Archius) ,passing this value to a method should return me an array of URL nodes value within it.
The idea is to display the book names in a list and then on user selection , corresponding URL needs to be fetched.
Was able to get the loop for traversing the nodes
[java=code] NodeList nodeList = document.getDocumentElement().getElementsByTagName ("Book"); for (int i = 0; i < nodeList.getLength(); i++) {... [java=code]
So
a) Display the BookNames
b) Get the corresponding URL's for the particular book if I pass the Bookname
I just started using java because i want to create a simple web service that will take some values from within a url and save those values in variables.
To be more specific:
For my project I use the Spring Tool Suite.
I want to be able to enter a URL in a browser.. something like "localhost:8080/test?name=Root". When I hit Enter a page will be displayed showing "Hello Root" if the name in the URL is Root or "Hello User" for any other name.
I wrote a Chess game that uses socket to connect to another computer, and allow player vs player and player vs computer game sessions.
However, there is a problem which I noticed.
When you get the IP address of the computer in which the program is running, you are not getting the computer's actual IP, you are getting the Router's IP.
Is there a way to get around this.
So the problem is that when I go to another computer, located in a different house or lets say from my school, the program cannot connect back to my home IP, because it uses the router's ip, not the computer's ip I am running the server program.
Is there a way to get the Computer's IP, not the router's ip when summoning or invoking the get IP address method from the socket class?
When I say that the socket class is acquiring the router's ip, well that's done without my interfering...I don't know why it does that, it is somehow recognizing the router and not the computer.
The thing is that the server program is written that any client program is able to connect to the home server.
But when I run the program from a different location other than the current home, the sockets don't connect because it is somehow recognizing the router's ip not the computer's ip.
In my java program I'm changing my IP(using proxy) and sending the request to some sites. Later some point of time, I want to know my current IP address through java program itself. How to get hold of my current IP address? Also which IP address will it show? The proxy one or the original IP ?
I need a java program for getting name and address matching from oracle database. I need get all the customer name and address belonging to same person even if there is slight name and address changes are there.
James Smith 123 Broadway Av Brownville, ME 04415
James S 123 Brodway Avenue Brownville Junction, ME 04451
I am unable to get a best code for this and trying since long time.
I'm Fresher and i'm new in ATG nd right now working on checkout module.Here I'm trying to take shipping information of user so it is fetching in the shipping information JSP bt when i'm trying to submit that JSP den it's not going to either in SuccessURL or in ErrorURL it's remaining in current JSP.
I'm doing any customization's i'm jst using al Out Of Box Components nd my code is almost same as Out Of Box Code and it is not giving any error also.
I'm attaching my JSP's
Attached File(s)
shipping_jsp.txt (4.17K) Number of downloads: 293 shippingAddress_jsp.txt (1.9K) Number of downloads: 135 shippingSingle_jsp.txt (70bytes) Number of downloads: 19 shippingSingleForm_jsp.txt (2.05K) Number of downloads: 102
