Thread: linked lists

import java.io.*;
 
public class LinkedList 
{
	private class node
	{
		int number;
		node next;
	}
 
	private node current = new node();
 
	LinkedList()
	{
		current=null;
	}
 
	public void insert(int n)
	{
		if(current != null)
		{
			while(current != null)
			{
			current = current.next;
			}
			current = new node();
			current.number = n;
			current.next = null;
		}
		else
		{
		current = new node();
		current.number = n;
		current.next = null;
		}
	}
 
	public void PrintList()
	{
		int count = 0;
		while(current != null)
		{
			System.out.println(current.number);
			current=current.next;
			count++;
			System.out.println(count);
		}
	}
 
 
	public static void main(String[] args)
	{
		LinkedList myList=new LinkedList();
 
		for(int i=0;i<10;i++)
		{
		myList.insert(i);
		}
 
		myList.PrintList();
 
	}
 
}

This compiles but it only runs once it seems. The program outputs 9 which is the end of the loop in main and 1 which counts how many times the while loop happens in the print method. Therefore I must be overriding the same memory location in my insert method, but why?

--- Update ---

I changed a few things around but still the same result:

import java.io.*;
 
public class LinkedList 
{
	private class node
	{
		int number;
		node next;
	}
 
	private node current = new node();
 
	LinkedList()
	{
		current=null;
	}
 
	public void insert(int n)
	{
		if(current==null)
		{
			current = new node();
			current.number = n;
			current.next = null;
		}
		else
		{
		while(current != null)
		{
			current = current.next;
		}
		current = new node();
		current.number = n;
		current.next = null;
		}
	}
 
	public void PrintList()
	{
		int count = 0;
		while(current != null)
		{
			System.out.println(current.number);
			current=current.next;
			count++;
			System.out.println(count);
		}
	}
 
	public static void main(String[] args)
	{
		LinkedList myList=new LinkedList();
 
		for(int i=0;i<10;i++)
		{
		myList.insert(i);
		}
 
		myList.PrintList();
 
	}
 
}

Java's naming convention is that class names begin with capital letters, method and variable names begin with lowercase letters. Please follow Java's naming conventions.

Will do Greg and thanks norm I got it figured out.

I am about to start programming depth and breath first search for fun but I was wondering is there a library in Java for those data structures?