Forest.java

package lab01;

/**
 * Forest class
 * Models a forest of trees
 * @author Chad Humphries
 * @version lab01
 * Date Created: Sept 14, 2019
 */
public class Forest
{
	//Variables
	private Tree[] trees;

	/**
	 * Default constructor
	 */
	public Forest()
	{
		trees = new Tree[10];
	}

	/**
	 * Plants a tree
	 * @param tree Tree to be planted
	 */
	public void plant(Tree tree)
	{
		for(int i = 0; i < trees.length; i++)
		{
			if(trees[i] == null)
			{
				trees[i] = tree;
				break;
			}
		}
	}

	/**
	 * Determines the amount of trees in the forest
	 * @return Amount of trees in the forest
	 */
	public int numberOfTrees()
	{
		int amount = 0;
		for(Tree t : trees)
		{
			if(t != null)
			{
				amount++;
			}
		}
		return amount;
	}

	/**
	 * Prints details on all trees in the forest
	 */
	public void showTrees()
	{
		System.out.println("Trees in forest:");
		System.out.println("**********************");
		for(Tree t : trees)
		{
			if(t != null)
			{
				t.showDetails();
			}
		}
		System.out.println("**********************\n");
	}

	/*
	 * Prints details on all trees planted in that year
	 */
	void showTreesByYear(int year)
	{
		System.out.println("Trees planted in: " + year);
		System.out.println("**********************");
		for(Tree t : trees)
		{
			if(t != null && t.getYear() == year)
			{
				t.showDetails();
			}
		}
		System.out.println("**********************\n");
	}

	/**
	 * Removes all trees planted in that year
	 * @param year Year of trees to be removed
	 */
	void removeTreesByYear(int year)
	{
		for(int i = 0; i < trees.length; i++)
		{
			if(trees[i] != null && trees[i].getYear() == year)
				{
					trees[i] = null;
				}
		}
		System.out.println("Removed trees planted in: " + year);
	}
}