Java compile error Identifer expected

public class Alien
{
   //public static enum AlienType { SNAKE_ALIEN, OGRE_ALIEN, MARSHMALLOW_MAN_ALIEN};

   //public AlienType type;
   private int health;
   private String name;

   public Alien()
   {
	   this.name = "Daniel";
	   this.health = 50;
   }
   public Alien(String name)
   {
	   this.name = name;
	   this.health = 50;
   }

   public Alien(int health)
   {
	   this.name = "Daniel";
	   this.health = health;
   }

   public Alien(int health, String name)
   {
       this.health = health;
       this.name = name;
   }

   public int getDamage()
   {
	   return 15;
   }

}

public class Ogre extends Alien
{
	private int damage;
	public Ogre()
	{
		super();
		damage = 6;
	}

	public Ogre(String name)
	{
		super(name);
		damage = 6;
	}

	public Ogre(int health)
	{
		super(health);
		damage = 6;
	}

	public Ogre(int health,String name)
	{
		super(health,name);
		damage = 6;
	}

	public int getDamage()
	{
		return damage;
	}
}

public class AlienPack
{

    private Alien[] aliens;

    public AlienPack (int numAliens)
    {
        aliens = new Alien[numAliens];
    }

    public void addAlien(Alien newAlien, int index)
    {
        aliens[index] = newAlien;
    }

    public Alien[] getAliens()
    {
        return aliens;
    }

    public int calculateDamage()
    {
        int damage = 0;
        for (int i=0; i<aliens.length; i++)
        {
			damage = damage + aliens[i].getDamage();
           /* if (aliens[i].type == Alien.AlienType.SNAKE_ALIEN)
            {
                damage += 10;
            }
            else if (aliens[i].type == Alien.AlienType.OGRE_ALIEN)
            {
                damage += 6;
            }
            else if (aliens[i].type == Alien.AlienType.MARSHMALLOW_MAN_ALIEN)
            {
                damage += 1;
            }*/
        }
        return damage;
    }

}

public class AlienTest
{
	Alien alien1 = new Ogre(100,"dan");
	Alien alien2 = new Snake(100,"Bart");
	Alien alien3 = new Marshmellow(10,"Jen");

	AlienPack pack1 = new AlienPack(3);

	pack1.addAlien(alien1,0);
	/*pack1.addAlien(alien2,1);
	pack1.addAlien(alien3,2);*/
}