Code

package me.TJM4.FindPlayer;

import org.bukkit.Bukkit;
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 Main extends JavaPlugin{

	public void onEnable() {
		Bukkit.getServer().getLogger().info("Find player has been enabled!");
	}
	public void onDisable() {
		Bukkit.getServer().getLogger().info("Find player has been disabled!");
	}

	public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

		Player p = (Player) sender;


		if (cmd.getName().equalsIgnoreCase("findplayer")) {

			if (!(args.length == 1)){
				p.sendMessage(ChatColor.RED + "Invalid syntax, please use: " + ChatColor.AQUA + "/findplayer <playername> OR /findplayer all");
				return false;
			}

			if (args[0].equalsIgnoreCase("all")){
				if (!(p.hasPermission("findplayer.single"))) {
					p.sendMessage(ChatColor.RED + "You do not have permission to do that!");
					return false;
				}
				p.sendMessage(ChatColor.AQUA + "Everyone's location:");
				for(Player player : Bukkit.getOnlinePlayers()) {
					p.sendMessage(ChatColor.GREEN + player.getName() + "'s location is: " + ChatColor.YELLOW + "X = " + player.getLocation().getX() + " Y = " + player.getLocation().getY() + " Z = " + player.getLocation().getZ());
				return false;
			}


			}


			@SuppressWarnings("deprecation")
			Player target = Bukkit.getServer().getPlayer(args[0]);
			if (target == null) {
				p.sendMessage(ChatColor.RED + "Player not found!");
				return false;
			}


			if (!(args[0].equalsIgnoreCase("all"))) {
				if (!(p.hasPermission("findplayer.all"))) {
					p.sendMessage(ChatColor.RED + "You do not have permission to do that!");
					return false;
				}else{
				p.sendMessage(ChatColor.GREEN + target.getName() + "'s location is: " + ChatColor.YELLOW + "X = " + target.getLocation().getX() + " Y = " + target.getLocation().getY() + " Z = " + target.getLocation().getZ());
				return false;
				}
			}


			}





		return false;

	}

}