@EventHandler
public void test(EntityCombustEvent event) {
    if (event.getEntity() instanceof Item) {
        event.setCancelled(true);
        Bukkit.broadcastMessage("EntityCombustEvent");
    }
}

@EventHandler
public void test(EntityCombustByBlockEvent event) {
    if (event.getEntity() instanceof Item) {
        event.setCancelled(true);
        Bukkit.broadcastMessage("EntityCombustByBlockEvent");
    }
}