Making a Tpa command

Okay so i tried to make this tpa command but i just cant get it to work... heres the code:

Code:

package me.zderki.zderkistpa;

import java.util.HashMap;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;


@SuppressWarnings("unused")
public class Main extends JavaPlugin {
    public HashMap<Player, Player> tpa = new HashMap<Player, Player>();

    @Override
    public void onEnable(){
       
    }
   
    public void onDisable() {
       
    }
   
   
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
   
        Player player = (Player) sender;
        if(label.equalsIgnoreCase("tpa")) {
       
            if(args.length == 1) {
            try {
               
                Player player2 = Bukkit.getPlayer(args[0]);
               
                tpa.put(player2, player);
               
                player2.sendMessage("acc/deny");
               
                player.sendMessage("req sent");
               
               
               
            } catch (Exception e)
            {
                player.sendMessage("error lol idk use args");
            }
           
        }
       
        if(label.equalsIgnoreCase("tpaccept")) {
           
        }
            Player player2 = tpa.get(player);
           
            player2.teleport(player.getLocation());
           
            player.sendMessage("tping");
            player2.sendMessage("tping");
        }
       
       
        return true;}
       
    }

Please help.

PS: im gonna change the messeges when im done ofc lol

 

Okay, i will try... well basically /tpaccept isnt working

EDIT: how am i meant to change it to UUID tho cuz like i need to teleport the player that is stored in the hash map later, right?

sorry if im not understanding something correctly... im new to coding

 

Okay look, i want it to do that when player 1 types "/tpa player2" and player 2 types "/tpaccept" player 1 gets teleported to player 2

 

It only sends the player that i want to teleport to the "acc/den" message but when he does /tpaccept nothing happens

 

yup works now