Determining the currently pointed to item in a list

Question

I am working with lists. I have been able to determine the first and last position of items in my list. I am using getPostion and displaying item name through a

Answer 1

I would add

public int current; 

to the listoftrees. in the constructor set it to 0;

Then create a method to return the current fruit_trees object

public fruit_trees getCurrent()
{
    fruit_trees ft = first_tree;
    int i = 0;   
    while(i != current)
    {
       ft = ft.next_tree;
       i++;
    }
    return ft;
 }

now this method returns the current and not the next object. So you have 2 options in the next button event.
the quesiton here is do you want to move to the next tree object every time the button is clicked? if so increment the current property and then call getcurrent to display. If you want the current to be retained and not move (i.e. clicking next over and over will result in the same thing) then display getcurrent().next_tree.tree_type with no increment to current.