Event Handlers?

Event Handlers are not working for me, I checked everything and compared it with other plugins but none of all my EventHandlers are working.
Here is my code.

@EventHandler
public void ballFiring(PlayerInteractEvent e){
Player p = e.getPlayer();
if (!(e.getAction() == Action.RIGHT_CLICK_AIR)) return;
if (!(e.getItem().getType() == Material.WHEAT)) return;
if(!p.hasPermission("example.example")) return;
Fireball s = e.getPlayer().launchProjectile(Fireball.class);
p.sendMessage(ChatColor.GREEN + "BURRP");
p.sendMessage(ChatColor.DARK_GREEN + "You smoke weed for an hour....");
p.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 30, 4));
p.addPotionEffect(new PotionEffect(PotionEffectType.BLINDNESS, 10, 0));
p.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 5, 0));
}
@EventHandler
public void onPlayerJoin(PlayerJoinEvent e)
{
Player player = e.getPlayer();
player.playSound(player.getLocation(), Sound.LEVEL_UP, 1, 1);
player.addPotionEffect(new PotionEffect(PotionEffectType.SPEED, 5, 2));
player.sendMessage(ChatColor.GOLD + "---------------------------------------------");
player.sendMessage(ChatColor.GOLD + " ");
player.sendMessage(ChatColor.AQUA + "Welcome Back to LightningMcHD!");
player.sendMessage(ChatColor.AQUA + "Running LightningCustom Version 1.0 by " + ChatColor.RED + " TheDiamond06");
player.sendMessage(ChatColor.AQUA + "Enjoy your Stay at LightningMcHd " + ChatColor.RED + " " + player.getName());
player.sendMessage(ChatColor.AQUA + " ");
player.sendMessage(ChatColor.GOLD + "---------------------------------------------");
player.sendMessage(ChatColor.RED + "[PvP] Given Speed to get away from your attacker. Make sure you don't PvP Log for this!");
}
@EventHandler
public void onBlockBreak(BlockBreakEvent e)
{
Player p = e.getPlayer();
p.playSound(p.getLocation(), Sound.CHICKEN_EGG_POP, 1, 1);
}

 

Use the code tag or people will be less likely to want to read your code, like me for example. So I am going to go for a common question. Did you register your events?

 

Did you register the events?

 

For those who must:

Code:

@EventHandler
    public void ballFiring(PlayerInteractEvent e) {
        Player p = e.getPlayer();
        if (!(e.getAction() == Action.RIGHT_CLICK_AIR))
            return;
        if (!(e.getItem().getType() == Material.WHEAT))
            return;
        if (!p.hasPermission("example.example"))
            return;
        Fireball s = e.getPlayer().launchProjectile(Fireball.class);
        p.sendMessage(ChatColor.GREEN + "BURRP");
        p.sendMessage(ChatColor.DARK_GREEN + "You smoke weed for an hour....");
        p.addPotionEffect(new PotionEffect(PotionEffectType.CONFUSION, 30, 4));
        p.addPotionEffect(new PotionEffect(PotionEffectType.BLINDNESS, 10, 0));
        p.addPotionEffect(new PotionEffect(PotionEffectType.INCREASE_DAMAGE, 5,
                0));
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent e) {
        Player player = e.getPlayer();
        player.playSound(player.getLocation(), Sound.LEVEL_UP, 1, 1);
        player.addPotionEffect(new PotionEffect(PotionEffectType.SPEED, 5, 2));
        player.sendMessage(ChatColor.GOLD
                + "---------------------------------------------");
        player.sendMessage(ChatColor.GOLD + " ");
        player.sendMessage(ChatColor.AQUA + "Welcome Back to LightningMcHD!");
        player.sendMessage(ChatColor.AQUA
                + "Running LightningCustom Version 1.0 by " + ChatColor.RED
                + " TheDiamond06");
        player.sendMessage(ChatColor.AQUA + "Enjoy your Stay at LightningMcHd "
                + ChatColor.RED + " " + player.getName());
        player.sendMessage(ChatColor.AQUA + " ");
        player.sendMessage(ChatColor.GOLD
                + "---------------------------------------------");
        player.sendMessage(ChatColor.RED
                + "[PvP] Given Speed to get away from your attacker. Make sure you don't PvP Log for this!");
    }

    @EventHandler
    public void onBlockBreak(BlockBreakEvent e) {
        Player p = e.getPlayer();
        p.playSound(p.getLocation(), Sound.CHICKEN_EGG_POP, 1, 1);
    }