Solved

Items not being added through GUI but can be added to ArrayList from input file

Posted on 2011-03-19
2
313 Views
Last Modified: 2012-05-11
I had to redesign the classes (it was dictated to me that they be as they are - Person,Friend,Address) the rest is my own AddressBook (main class), AddressBookGUI, BookActions, and Contact (should be ContactList) - for processing objects into an ArrayList.
 AddressBook.java  AddressBookGUI.java BookActions.java Contact.java Person.java Friend.java

these are what I am working with.

The problem I am now having is retrieving text from the textfields into the Friend Constructor in the addNewContact() method in the BookAction class.
 
public void addNewContact() {
        System.out.println(c.contactsSize());
        String lName = abg.lastName.getText();
        String fName = abg.firstName.getText();
        String mName = abg.middleName.getText();
        String hPhone = abg.homePhone.getText();
        String cPhone = abg.cellPhone.getText();
        String streetName = abg.streetName.getText();
        String cityName = abg.cityName.getText();
        String stateName = abg.stateName.getText();
        String zipCode = abg.zipCode.getText();

        f = new Friend(lName, fName, mName, hPhone, cPhone);
        a = new Address(streetName, cityName, stateName, zipCode);
        c.addContacts(f);
        clearAll();
        System.out.println(c.getContacts());
    }

Open in new window


I get a null pointer exception from trying to retrieve the ArrayList size or the same exception when trying to add the friend object.

I'm not sure what is wrong becaue the arrayList returns "11" as a size and also displays all the contact objects read from the input file.

Address.java
0
Comment
Question by:g_currier
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 35173438
c is null, you need to initialise it before adding things to it
0
 

Author Closing Comment

by:g_currier
ID: 35176061
that worked, thanks
(I've got a few more issues (next posting)
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
hibernate example using maven 12 103
Tomcat: Unable to run tomcat service. 2 33
Glassfish admin console not working 1 81
Notify sent to other threads in Java 9 52
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
This video teaches viewers about errors in exception handling.
Suggested Courses

742 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question