question..

import greenfoot.*;  // (World, Actor, GreenfootImage, and Greenfoot)
import java.util.List;
import javax.swing.*;
import java.util.ArrayList;

public class Player1 extends Actor
{
    private static final int EAST = 0;
    private static final int WEST = 1;
    private static final int NORTH = 2;
    private static final int SOUTH = 3;

    private int direction;
    private int leavesEaten;
     boolean shoot = false;
    int x;
    

    public Player1()
    {
        setDirection(EAST);
       
    }
    int coincount = 0;
    Bullet b = new Bullet();
    public int nom = 1;
    public int getNom()
    {
        return nom;
    }
      public void act()
    {
       
        if(processKeys());
        if(foundMONEY())
        {
            ++coincount;
            eatCoin();
        }
        if(Greenfoot.isKeyDown("1"))
              
               getWorld().addObject(b, getX() + 1, getY());
              
         if(foundStore()) {
              
           String Choice;
           int ChoiceFix;
           int Choice1 = 1;
           int Choice2 = 2;
           int Choice3 = 3;
           int Choice4 = 4;
           int Choice5 = 5;
           int Choice6 = 6;
           int Choice7 = 7;
           int Choice8 = 8;
           int choice9 = 9;

     Choice = JOptionPane.showInputDialog(null, "Hello! Welcome to the store!\nYou have " + coincount + " coins!\n1. Buy grey- 2 coins \n2. Buy blue- 2 coins \n3. Buy green- 2 coins \n4. Buy red- 2 coins \n5. Buy white- 2 coins \n6. Buy black- 3 coins \n7. Buy gold- 3 coins \n8. Buy NPC1- 5 coins\n9. Buy ZOMBEH- 10 coins");
        ChoiceFix = Integer.parseInt(Choice);
         Actor Player1 = getOneObjectAtOffset(0, 0, Player1.class);
                World myWorld = getWorld();

           if (ChoiceFix == 1){
               if(coincount < 2){
                JOptionPane.showMessageDialog(null, "Sorry, you do not have enough money to buy this");
               setLocation(getX() + 1, getY());}
               else 
               {--coincount;
               --coincount;
                setImage("greyPlayer.png");
                nom = 1;
                setLocation(getX() + 1, getY());}
            }

import greenfoot.*;  // (World, Actor, GreenfootImage, and Greenfoot)
import java.util.Random;
import java.util.List;
import java.util.ArrayList;
import javax.swing.JOptionPane;
import java.awt.*;

public class Zombeh extends Actor
{
    private static final int EAST = 0;
    private static final int WEST = 1;
    private static final int NORTH = 2;
    private static final int SOUTH = 3;

    private int direction;
    
    public void Zombeh()
    {
        setDirection(EAST);
      
    }
      public void act()
    {
        int nom = Player1.getNom();