Java

Hi .Facing problem while displaying LinkedList (API) element using Iterator

Please support our Java advertiser: Programming Forums - DaniWeb Sister Site

Thread Solved

•

Join Date: Dec 2007

Posts: 18

Reputation: Aashath is an unknown quantity at this point

Solved Threads: 5

Aashath

Offline

Newbie Poster

Hi .Facing problem while displaying LinkedList (API) element using Iterator

Oct 22nd, 2008

Hi

I have a LinkedList of class called Room. Now i want display elements that i stored in that class . i also implemented toString() in my Room class which returns string.

The code i tried is below but its not working . i dont know the reason . can anyone help me .

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
private static void callDisplay(LinkedList<Room> roomlist) {
		// TODO Auto-generated method stub
		ListIterator<Room> iter = roomlist.listIterator();	
		while (  iter.hasNext() )
		{  
			System.out.println("Came in");
			Room r = iter.next();
			r.toString();
 
		}
 
	}
private static void callDisplay(LinkedList<Room> roomlist) {
		// TODO Auto-generated method stub
		ListIterator<Room> iter = roomlist.listIterator();	
		while (  iter.hasNext() )
		{  
			System.out.println("Came in");
			Room r = iter.next();
			r.toString();
			
		}
		
	}

"The most important single aspect of software development is to be clear about what you are trying to build." - Bjarne Stroustrup

•

Join Date: Dec 2007

Posts: 1,718

Reputation: javaAddict is a name known to all

Solved Threads: 230

javaAddict javaAddict is offline

Offline

Posting Virtuoso

Re: Hi .Facing problem while displaying LinkedList (API) element using Iterator

Oct 22nd, 2008

The r.toString() returns a String, it does not print. You need to call System.out.println() with argument r or r.toString()

Check out my New Bike at my Public Profile at the "About Me" tab

•

Join Date: Aug 2007

Posts: 812

Reputation: darkagn has a spectacular aura about

Solved Threads: 110

darkagn

Offline

Practically a Posting Shark

Re: Hi .Facing problem while displaying LinkedList (API) element using Iterator

Oct 22nd, 2008

When you say it's not working, are you getting an error message? Does the string "Came in" print? If the answer is no to both questions then there are no Room objects in your LinkedList. Try a call to roomList.size() to see how many are Room objects exist in your list.

If you are getting the string "Came in" printed, then the problem is that you are just writing r.toString() - you don't actually do anything with that call like print it. Try

 Help with Code Tags 
 java Syntax (Toggle Plain Text) 
System.out.println( r.toString() );
System.out.println( r.toString() );

instead.

There are no stupid questions, only those too stupid to ask for help.
echo is a web developer's best friend.

Quick Reply to Thread

Show Printable Version

Other Threads in the Java Forum

Previous Thread: Need help! (Simple programs...)
Next Thread: java problem

Views: 584 | Replies: 2

Thread Tools	Search this Thread
Show Printable Version Email this Page

DaniWeb Message

Cancel Changes