Java Answers Forum - I/O file reading into a singly LinkedList Need Help

Articles |
News |
Weblogs |
Books |
Forums

Artima Forums | Articles | Weblogs | Java Answers | News

Sponsored Link •

Java Answers Forum
I/O file reading into a singly LinkedList Need Help

1 reply on 1 page. Most recent reply: Apr 14, 2002 10:28 PM by Matt Gerrans

Welcome Guest
Sign In

Back to Topic List

Reply to this Topic

Search Forum

Threaded View


Previous Topic		Next Topic

Flat View: This topic has 1 reply on 1 page

Jackie

Posts: 4
Nickname: jackie
Registered: Apr, 2002

I/O file reading into a singly LinkedList Need Help

Posted: Apr 14, 2002 8:48 PM

Hi there,

Can anyone please help me! I get lost when I'm reading from input file into a singly linkedlist. I'm not quite sure if im reading it correctly. Also, I don't know how to display all informations in my list.

(SOME CODE FOR MY INFILE)
// Reads the file
while( (line = inFile.readLine()) != null )
{
attName = line;
attId = new Integer(inFile.readLine ().trim)).intValue();
attAddress = inFile.readLine();

// Create an object to store the attendee details
attendee = new AttendeesInfo
(attName,attId,attAddress);

//insert each attendee into the list.
list.insertToFront(attendee);
} // while

How do I display the items in my list. For instance in each node in my list it consist of 3 different data (ie String, int, String).
Please help!!!!

Matt Gerrans

Posts: 1153
Nickname: matt
Registered: Feb, 2002

Re: I/O file reading into a singly LinkedList Need Help

Posted: Apr 14, 2002 10:28 PM

Here is a previous answer to reading lines from a file into a List:
http://www.artima.com/forums/flat.jsp?forum=1&thread=791

You are calling insertToFront(), which is not a part of List or any of its API implementations, so I guess you are using your own linked list. That means there is no way for we in this forum to know how you get elements from that list. If I were you, I'd switch to using the List interface that comes with the Java API along with an ArrayList or LinkedList. Then, printing out the list will be a simple matter of doing a System.out.println(list); or, if you want to do some more fancy stuff, getting an Iterator from the list and printing out the elements to your liking.

By the way, your AttendeesInfo class should define toString(), so that when the List tries to render each element for printing, it gets something nice to look at, not the default Object implementation of toString().

Flat View: This topic has 1 reply on 1 page

Previous Topic

Next Topic


	Web Artima.com