MC plugin whont show up

Main.java:

package me.marvhus.AntiLag;


import org.bukkit.Bukkit;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;
import me.marvhus.AntiLag.commands.gm1;
import me.marvhus.AntiLag.commands.gm2;
import me.marvhus.AntiLag.commands.gm3;

public class Main extends JavaPlugin implements Listener {

    @Override
    public void onEnable() {

        getCommand("gm1").setExecutor(new gm1());
        getCommand("gm2").setExecutor(new gm2());
        getCommand("gm1").setExecutor(new gm3());
        Bukkit.getPluginManager().registerEvents(this, this);
    }

}

gm1.java:

package me.marvhus.AntiLag.commands;

import org.bukkit.ChatColor;
import org.bukkit.GameMode;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class gm1 implements CommandExecutor {

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String Label, String[] args) {
        Player player = (Player) sender;
        if(Label.equalsIgnoreCase("gm1")) {
            //do this
            if(args.length == 0) {
                player.sendMessage(ChatColor.RED + "Test 1");
                player.setGameMode(GameMode.CREATIVE);
            }
        }
        return false;
    }

}

gm2.java:

package me.marvhus.AntiLag.commands;

import org.bukkit.ChatColor;
import org.bukkit.GameMode;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class gm2 implements CommandExecutor {

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String Label, String[] args) {
        Player player = (Player) sender;
        if(Label.equalsIgnoreCase("gm2")) {
            //do this
            if(args.length == 0) {
                player.sendMessage(ChatColor.RED + "Test 2");
                player.setGameMode(GameMode.SURVIVAL);
            }
        }
        return false;
    }

}

gm3.java:

package me.marvhus.AntiLag.commands;

import org.bukkit.ChatColor;
import org.bukkit.GameMode;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

public class gm2 implements CommandExecutor {

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String Label, String[] args) {
        Player player = (Player) sender;
        if(Label.equalsIgnoreCase("gm2")) {
            //do this
            if(args.length == 0) {
                player.sendMessage(ChatColor.RED + "Test 2");
                player.setGameMode(GameMode.SURVIVAL);
            }
        }
        return false;
    }

}