import java.util.*;
public abstract class Mammal 
{
     Head head;
     char gender;
     public String name;
     protected int age = 0;
     private List <Limb> limbs;
     String myArm,myLeg;
 
   protected Mammal() 
   {
       this.limbs = new ArrayList<Limb>();
       limbs.add(new Leg("Left"));
       limbs.add(new Leg("Right"));
       limbs.add(new Arms("Left"));
       limbs.add(new Arms("Right"));
   } 
 
   protected Mammal(List<Limb> limbs) 
   {  
        this.limbs = limbs;
   }
 
   // adding limbs:
   protected void addLimbs(List<Limb>limbToAdd) 
   {
        this.limbs.add((Limb) limbToAdd);
   }
 
   //remove limbs
   protected void removeLimbs(List<Limb> limbToRemove) 
   {
         Object temp = null;
         Iterator iter = limbs.iterator();
         while (iter.hasNext()) 
         {
               temp = iter.next();
               if (temp instanceof Arms) 
               {
                   //myArm = (Arms)temp;
                   iter.remove();  // iter.remove(myArm);
                   if (temp instanceof Leg) 
                   { 
                       //myLeg = (Leg)temp;
                       iter.remove();    //iter.remove(myLeg);
                   }
               }
          }
      }
      protected List<Limb> getLimbs() 
      {
          return this.limbs;
      }
 
      public Mammal(String name)
      {
          this.name = name;
      }
 
      public void getOlder(int years) 
      {
           age += years;
      }
 
      public void makeSound() 
      {
          System.out.print(name+" Oooops ");
      }
 
      public void eat()
      {
          System.out.print("Some food please...");        
      }
 
}

import java.util.*;
public abstract class Human extends Mammal 
{
    int MyAge,Age;
    String mrating; 
 
    Arms[] arms = new Arms[2];
    Leg[] legs = new Leg[2];
 
    void walk()
    {
        legs[0].move("Right Leg"); 
        legs[1].move("Left Leg");    
    }
 
    void swim() 
    {
          arms[0].move("Right hand");  
          arms[1].move("Left hand");  
 
    }
 
	// default constructor
    public Human(String name) 
    {
        super(name);
    	gender = 'M';   // the default is M for Male
    }
    @Override
    public void makeSound() 
    {
       System.out.print(name+" Oooops ");
    }
    @Override
    public void getOlder(int years) 
    {
         age += years;
    }
    @Override
    public void eat()
    {
        System.out.print("Some food please...");
 
    }
    // the getters and setters...
    public int getAge()	
    { 
          return this.MyAge;
    }
    public void setAge(int Age) 
    { 
        this.MyAge=Age; 
    }
 
 
    //methods for iterating through the limbs
    public void getArms()
    {
        Limb limbs = new Arms("");
        ArrayList myArms = new ArrayList();
        // Populate the list using the .add() methods
        myArms.add("Right Hand");
        myArms.add("Left Hand");
        Collection myforeLimbs =myArms;
        if(limbs instanceof Arms)
        {
              System.out.println("\t"+myforeLimbs);
        }
 
    }
    public void getLegs()
    {
        Limb limbs = new Leg("");
         ArrayList myLegs = new ArrayList();
        // Populate the list using the .add() methods
        myLegs.add("Right Leg");
        myLegs.add("Left Leg");
        Collection myhindLimbs =myLegs;
        if(limbs instanceof Leg)
        {
              System.out.println("\t"+myhindLimbs);
        }
 
    }
 
    public abstract boolean canWatchMovie(MovieRating mRt);
 
}

// adding limbs:
   protected void addLimbs(List<Limb>limbToAdd) 
   {
        this.limbs.add((Limb) limbToAdd);
   }

// adding limbs:
   protected void addLimb(Limb limbToAdd) 
   {
        this.limbs.add(limbToAdd);
   }