Need help with Title and SubTitle

Hello Guys,
I found this example in internet:

Code:

package me.pogo.packets;

import org.bukkit.Bukkit;
import org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.AsyncPlayerChatEvent;
import org.bukkit.plugin.java.JavaPlugin;

import net.minecraft.server.v1_8_R3.IChatBaseComponent.ChatSerializer;
import net.minecraft.server.v1_8_R3.PacketPlayOutTitle;
import net.minecraft.server.v1_8_R3.PacketPlayOutTitle.EnumTitleAction;

public class Title extends JavaPlugin implements Listener {
   
    @Override
    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }
   
    @EventHandler
    public void onPlayerChat(AsyncPlayerChatEvent e) {
        if (e.getMessage().equals("title")) {
            // Title or subtitle, text, fade in (ticks), display time (ticks), fade out (ticks).
            PacketPlayOutTitle title = new PacketPlayOutTitle(EnumTitleAction.TITLE, ChatSerializer.a("{\"text\":\"Welcome\"}"), 20, 40, 20);
            PacketPlayOutTitle subtitle = new PacketPlayOutTitle(EnumTitleAction.SUBTITLE, ChatSerializer.a("{\"text\":\"to my server\"}"), 20, 40, 20);
            ((CraftPlayer) e.getPlayer()).getHandle().playerConnection.sendPacket(title);
            ((CraftPlayer) e.getPlayer()).getHandle().playerConnection.sendPacket(subtitle);
        }
    }
}

Problems are:
1) I want to place instead of ChatSerializer.a("{\"text\":\"Welcome\"}") a String and i don't know how.
2) In my case i am doing something like:

Code:

for (Player Admin :  Bukkit.getOnlinePlayers()) {
    if (Admin.hasPermission(blabla) || Admin.isOp()) {
     
PacketPlayOutTitle title = new PacketPlayOutTitle(EnumTitleAction.TITLE, ChatSerializer.a("{\"text\":\"Welcome\"}"),20, 40, 20);
PacketPlayOutTitle subtitle = new PacketPlayOutTitle(EnumTitleAction.SUBTITLE, ChatSerializer.a("{\"text\":\"to my server\"}"), 20, 40, 20);
((CraftPlayer) Admin).getHandle().playerConnection.sendPacket(title);
((CraftPlayer) Admin).getHandle().playerConnection.sendPacket(subtitle);
    }
}

I can't cast the player Admin to CraftPlayer, how to resolve? Error: CraftPlayer cannot be resolved to a type



Thanks to all!

 

I am using Spigot, and I want to solve it with code and not with title command or an plugin that provides the api.

 

Ok thanks, can I wait for other answers?

 

Solved thanks!

Solution: https://www.spigotmc.org/threads/titleapi-1-8-1-9.31271/page-5#post-1538858