One of the first classes I ever wrote (2011)

Hornet.java

import java.util.ArrayList;
import info.gridworld.actor.*;
import info.gridworld.grid.*;
import java.awt.Color;

public class Hornet extends Critter{
	
	public Hornet(){
		setColor(Color.yellow);
	
	}
	
	public ArrayList<Actor> getActors(){
		ArrayList<Actor> actors = new ArrayList<Actor>();
		Grid<Actor> g = getGrid();
		Location b = getLocation().getAdjacentLocation(Location.AHEAD + 180);
		if(g.isValid(b)){
			if(g.get(b) == null);
			else{
			actors.add(g.get(b));
		}}
		return actors;
		
	}
	public void processActors(ArrayList<Actor> actors){
		for(int x = 0; x < actors.size(); x++){
			if(actors.get(x) instanceof Hornet);
			else if(actors.get(x) instanceof Bug){
				Actor actor = actors.get(x);
				Grid<Actor> gr = actor.getGrid();
				Location loc = actor.getLocation();
				int dir = actor.getDirection();
				actor.removeSelfFromGrid();
				Actor actor2 = new EmptyBug();
				actor2.setColor(actor.getColor());
				actor2.setDirection(dir);
				if(gr.get(loc)== null) actor2.putSelfInGrid(gr, loc);
				
			}
			else if(actors.get(x) instanceof CrabCritter){
				Actor actor = actors.get(x);
				Grid<Actor> gr = actor.getGrid();
				Location loc = actor.getLocation();
				int dir = actor.getDirection();
				actor.removeSelfFromGrid();
				Actor actor2 = new EmptyCrabCritter();
				actor2.setColor(actor.getColor());
				actor2.setDirection(dir);
				if(gr.get(loc)== null) actor2.putSelfInGrid(gr, loc);
			
		}
			else if(actors.get(x) instanceof Critter){
				Actor actor = actors.get(x);
				Grid<Actor> gr = actor.getGrid();
				Location loc = actor.getLocation();
				int dir = actor.getDirection();
				actor.removeSelfFromGrid();
				Actor actor2 = new EmptyCritter();
				actor2.setColor(actor.getColor());
				actor2.setDirection(dir);
				if(gr.get(loc)== null) actor2.putSelfInGrid(gr, loc);
			}}	
	}}