import java.util.ArrayList;

/**
 * Write a description of class GCNewForest here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class NewForest
{
    // instance variables - replace the example below with your own
    private Tree[][] trees;
    private int n;

    /**
     * Constructor for objects of class NewForest
     */
    public NewForest()
    {
        // initialise instance variables
        n = 4;
        // Setting up an array of 4 rows and 4 columns.
        Tree[][] trees = new Tree[4][4];
        // Adding trees into the 2D array.
        for (int i = 0; i < trees.length; i++)
        {
            for (int j = 0; j < trees.length; j++)
            {
                if ((i+j)%2 == 0)
                   trees[i][j] = new Ash();

                else
                   trees[i][j] = new Beech();
            }
        }
    }

    public Tree getTree(int i, int j)
    {
        if(i < 4 && j < 4)
        {
            Tree trees = Tree[i][j];
        }

        else
        {
            return null;
        }
    }
}