Linklist

[buckey]

i'm doing a simple linklist of arrays.

anyway i have my node class which is a basic class
next, prev, int[] arr

has set and gets for all variables.

then i have my super class with my head and tail

i'm doing a simple insert

Node temp;
temp = new Node(null,nums);
if (tail != null)
{
temp.set_data(nums);
tail.set_next(temp);
temp.set_prev(tail);
tail = temp;
}
else
{
head = tail = temp;
}

However when i go to print out the list its the total size of the list but only prints out the last element

so suppose its a list of 3 elements

first element would be 1, 2, 3
2nd would be 4, 5, 6
3rd would be 7, 8, 9

well it prints out 3 elements of 7, 8, 9 instead of all 3 elements that were inserted

any ideas on what it could.

[iluxa]

your code looks correct. show us more code...

also, use code tags to make your code more readable (there's a button in the toolbar for that).

[buckey]

Here is what i've written so far

public class number{

		private Node head;
	private Node tail;
	
	public number()
	{
		int[] num = new int[6];
		Node temp = new Node(null,num);
		this.head = this.tail = temp;
		
	}
	
	public void print(PrintStream outfile)throws IOException
	{
		Node current;
		int counter = 0;
		for (current = head.next ; current != null; current = current.return_next())
		{
			++counter;
			int[] numr = new int[6];
			numr = current.return_data();
			for (int i = 0; i <=5; i = i+1)
			{	outfile.println(numr[i]);}
			outfile.println("COUNTER" + counter);
		}
	counter = 0;
	}
	
	public void insert(int[] nums)
	{
		Node temp;
		temp = new Node(null,nums);
		if (tail != null)
		{
			temp.set_data(nums);
			tail.set_next(temp);
			temp.set_prev(tail);
			tail = temp;
		}
		else
		{
			head = tail = temp;
		}
			
	}

	

	
	public static void main(String[] args) throws IOException
	{
		number a = new number(); 
		String filenumber;
		
		int[] numbr= new int[6];
		int countr = 0;
		FileInputStream stuff = new FileInputStream("C:/Documents and Settings/bbuckey/Desktop/numbers2.txt");
		InputStreamReader stuffs = new InputStreamReader(stuff);
		BufferedReader reads = new BufferedReader(stuffs);
		FileOutputStream outext = new FileOutputStream("C:/Documents and Settings/bbuckey/Desktop/out.txt");
		PrintStream outfile= new PrintStream(outext);
		while(true)
		{
			countr++;
			filenumber = reads.readLine();
			if(filenumber == null)break;
			filenumber = filenumber.trim();
			//System.out.println(filenumber);
			int count;
			count = 0;
			for (int i = 0; i <= filenumber.length(); i = i+4)
			{

				numbr[count] = Integer.parseInt(filenumber.substring(i, i+2));
				count = count + 1;
			}
			for (int i = 0; i <=5; i = i+1)
				System.out.println(numbr[i]);
				System.out.println(countr);
			a.insert(numbr);
			//a.printa(outfile);
		}

		a.print(outfile);
		outfile.close();
		reads.close();
	}

}


/************************/
/******* Node Class ********/


public class Node {
		
		public Node next;
		public Node prev;
		public int[] numbers;
		public Node(Node ne,int[] numb)
		{
			this.prev = ne;
			this.next = ne;
			this.numbers = numb;
			//counter++;
		}
		public void set_next( Node current)
		{
			next = current;
		}
		
		public void set_data(int[] arr){
			numbers = arr;
		}
		
		public void set_prev(Node current)
		{
			prev = current;
		}
		
		public int[] return_data()
		{
			return numbers;
		}
		
		public Node return_next()
		{
			return next;
		}
		
		public Node return_prev()
		{
			return prev;
		}
		
	}

[buckey]

nevermind i figured it out it was a problem with how i declared my array outside the while loop in my main. Just for future reference why would that be an issue.