Calling variables in other classes.

Hey, I'm making a plugin that has an inventory GUI and when you click the glass it gives you an item in a certain slot. However, The way I'm doing it is having the game test if a certain variable is a certain number and if it returns true then it switches out whatever is in you're first slot but I don't know how to go about doing this. The code as of now works perfectly, the special inventory opens up upon usage of the command /abilities, and I tested the click event with healing and it also works. I just don't know how to call the variable

Code:

public class A

public static boolean hActive = false;


    public static int Slot1 = 0;
    public static int Slot2 = 0;
    public static int Slot3 = 0;
    @EventHandler
    public void activateH(PlayerInteractEvent e) {
        Player p = e.getPlayer();
        if (p.getInventory().getHeldItemSlot() == 8 && HUser == true ) {
            HActive = true;
            p.sendMessage("what.");
          
            if (Slot1 == 0 && Slot2 == 0 && Slot3 == 0) {
            ItemStack SLO = new ItemStack(Material.STAINED_GLASS_PANE, 1, (short) 7);
            ItemMeta SLOMeta =  SLO.getItemMeta();
            SLOMeta.setDisplayName(ChatColor.DARK_GRAY + "" + ChatColor.BOLD + "No ability assigned!");
            ArrayList<String> SLOlore = new ArrayList<>();
            SLOlore.add(ChatColor.GRAY + "To view your abilities do /abillity!");
            SLOMeta.setLore(SLOlore);
            SLO.setItemMeta(SLOMeta);
            p.getInventory().setItem(1, SLO);
            p.getInventory().setItem(2, SLO);
            p.getInventory().setItem(3, SLO);
            }
            else {
                if (Slot1 == 1 && Slot2 == 0 && Slot3 == 0) {
                    ItemStack SLO = new ItemStack(Material.STAINED_GLASS_PANE, 1, (short) 7);
                    ItemMeta SLOMeta =  SLO.getItemMeta();
                    SLOMeta.setDisplayName(ChatColor.DARK_GRAY + "" + ChatColor.BOLD + "No ability assigned!");
                    ArrayList<String> SLOlore = new ArrayList<>();
                    SLOlore.add(ChatColor.GRAY + "To view your abilities do /abillity!");
                  
                    ItemStack SuperO= new ItemStack(Material.STAINED_GLASS_PANE, 1, (short) 1);
                    ItemMeta SuperO =  SuperO.getItemMeta();
                    SuperOMeta.setDisplayName(ChatColor.GOLD + "" + ChatColor.BOLD + "Super O");
                    ArrayList<String> SuperOlore = new ArrayList<>();
                    SuperOlore.add(ChatColor.YELLOW + "Let energy flow through your very being to unleash a powerful punch!");
                    SunlightOverdrivelore.add(ChatColor.YELLOW + "" + ChatColor.ITALIC + "Use /stats to upgrade your hamon potential.");
                    SuperOMeta.setLore(SunlightOverdrivelore);
                    SuperO.setItemMeta(SuperO);
                  
                    SLOMeta.setLore(SLOlore);
                    SLO.setItemMeta(SLOMeta);
                    p.getInventory().setItem(1, SuperO);
                    p.getInventory().setItem(2, SLO);
                    p.getInventory().setItem(3, SLO);
                }
            }
            ItemStack exitHamon = new ItemStack(Material.STAINED_GLASS_PANE, 1, (short) 14);
            ItemMeta exitHMeta =  exitH.getItemMeta();
            exitHMeta.setDisplayName(ChatColor.DARK_RED + "" + ChatColor.BOLD + "Deactivate");
            ArrayList<String> exitHlore = new ArrayList<>();
            exitHlore.add(ChatColor.GRAY + "Do you need a description? The item name is deactivate.");
            exitHMeta.setLore(exitHlore);
            exitH.setItemMeta(exitHMeta);
            p.getInventory().setItem(0, exitH);
          
          
          
        }
    }



public class HUI implements Listener {
    private Plugin plugin = Main.getPlugin(Main.class);

    public void newInventory(Player player) {
        Inventory i = plugin.getServer().createInventory(null, 18, "H Abilities");
        ItemStack SunlightOverdrive = new ItemStack(Material.STAINED_GLASS_PANE, 1, (short) 1);
        ItemMeta SuperOMeta =  SuperO.getItemMeta();
        SuperOMeta.setDisplayName(ChatColor.GOLD + "" + ChatColor.BOLD + "SuperO");
        ArrayList<String> SuperOlore = new ArrayList<>();
        SuperOlore.add(ChatColor.YELLOW + "Let energy flow through your very being to unleash a powerful punch!");
        SuperOlore.add(ChatColor.YELLOW + "" + ChatColor.ITALIC + "Use /stats to upgrade your  potential.");
        SuperOMeta.setLore(SuperOlore);
        SuperO.setItemMeta(SuperO);
        i.setItem(0, SuperO);
      
        player.openInventory(i);
    }
  
}


public class EventsClass implements Listener {
    public String prefix = ("TUTORIAL");
  
    @EventHandler
    public void InvenClick(InventoryClickEvent event) {
      
        Player player = (Player) event.getWhoClicked();
        Inventory open = event.getClickedInventory();
        ItemStack item = event.getCurrentItem();
        if(open == null) {
            return;
        }
        if(open.getName().equals("H Abilities")) {
            if(item.equals(null) || !item.hasItemMeta()) {
                return;
            }
            if(item.getItemMeta().getDisplayName().equals(ChatColor.GOLD + "" + ChatColor.BOLD + "SuperO")){
                Slot1 = 1;
            }
          
        }
    }
  
}

 

What do you mean by calling a variable? From another class?

 

I mean like call the variable Slot1 in the class EventClass so I can change its value.

 

Since these variables are static (for whatever reason) you can access them using A.Slot1 (ClassName.Variable). A way to walk around static variables would be to save the instance of A when you register the listener in your main and call the variable via that instance. But that's your choice