Messenger Plugin V.1.0.0 for Spigot 1.10.2

package com.messenger.main;

import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

public class Messenger extends JavaPlugin {
    HashMap<Player , Player> responses = new HashMap<Player , Player>();
    Logger logger = getLogger();


    @Override
    public void onEnable() {
        logger.log(Level.INFO , ChatColor.GOLD + getDescription().getName() + " - " + getDescription().getVersion() + ChatColor.GREEN + " ACTIVATED");
    }

    @Override
    public void onDisable() {
        logger.log(Level.INFO , ChatColor.GOLD + getDescription().getName() + " - " + getDescription().getVersion() + ChatColor.DARK_RED + " DEACTIVATED");
    }

    @Override
    public boolean onCommand(CommandSender sender , Command cmd , String label , String[] args) {
        if(sender instanceof Player) {
            Player p = (Player)sender;
            if(label.equalsIgnoreCase("msg")) {
                if(args.length < 2) {
                    p.sendMessage(ChatColor.RED + getDescription().getCommands().get("msg").get("tooltip").toString());
                    return false;
                }
                if(!(getServer().getPlayer(args[0]).isValid())) {
                    p.sendMessage(ChatColor.RED + "Player is not Online!");
                }
                Player t = getServer().getPlayer(args[0]);
                t.sendMessage(ChatColor.GOLD + "[" + ChatColor.GRAY + p.getName() + ChatColor.RESET + " --> " + ChatColor.RED + "You" + ChatColor.GOLD + "] " + args[1]);
                responses.put(p, t);
                return true;
            }

            if(label.equalsIgnoreCase("r")) {
                if(args.length < 1) {
                    p.sendMessage(ChatColor.RED + getDescription().getCommands().get("r").get("tooltip").toString());
                    return false;
                }
                if(!(responses.containsKey(p))) {
                    p.sendMessage(ChatColor.RED + "You don't have recent messages!");
                    return false;
                }
                Player t = responses.get(p);
                if(!(t.isValid())) {
                    p.sendMessage(ChatColor.RED + "Player is not Online!");
                    return false;
                }
                t.sendMessage(ChatColor.GOLD + "[" + ChatColor.GRAY + p.getName() + ChatColor.RESET + " --> " + ChatColor.RED + "You" + ChatColor.GOLD + "] " + args[0]);
                return true;
            }
        }
        return false;
    }
}