public class Pigs{

private int x;

public Pigs(int n){
    x = n;
    }
public findthepig(){
    return x;
    }
____________________
public class Pigsty{
    public Pigsty(int n){
    Pig[] pigsty = new Pig[n];
    }
    public int getthepig(){
    return 0;
    }
_____________________
public class Pigfarm{
    public Pigfarm(int n){
    Pigsty[] pigfarm = new Pigsty[n]
    }
    etc.