plz fix

package me.era.stats;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Timer;
import java.util.TimerTask;

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

public class Main extends JavaPlugin {

    String[] array10h;
    String[] array1h;
    String[] array10m;
    Timer timer10h = new Timer();
    Timer timer1h = new Timer();
    Timer timer10m = new Timer();


    @Override
    public void onEnable() {
        getCommand("playerCount").setExecutor(this);



        array10h = new String[11];
        array1h = new String[13];
        array10m = new String[21];

        for (int i=0; i<array10h.length; i++) {
            array10h[i] = "0";
        }
        for (int i=0; i<array1h.length; i++) {
            array1h[i] = "0";
        }
        for (int i=0; i<array10m.length; i++) {
            array10m[i] = "0";
        }

        try {
            ObjectInputStream in = new ObjectInputStream(new FileInputStream("10h.arr"));
            array10h = (String[]) in.readObject();
            in.close();
        } catch (Exception e) { Bukkit.broadcastMessage("OOF1"); }

        try {
            ObjectInputStream in = new ObjectInputStream(new FileInputStream("1h.arr"));
            array1h = (String[]) in.readObject();
            in.close();
        } catch (Exception e) { Bukkit.broadcastMessage("OOF2"); }

        try {
            ObjectInputStream in = new ObjectInputStream(new FileInputStream("10m.arr"));
            array10m = (String[]) in.readObject();
            in.close();
        } catch (Exception e) { Bukkit.broadcastMessage("OOF3"); }

        this.loop1();
        this.loop2();
        this.loop3();
    }

    @Override
    public void onDisable() {
    }

    void loop1() {
        timer10h.schedule( new TimerTask() {
            public void run() {
                // do your work
                Bukkit.broadcastMessage(ChatColor.AQUA + String.valueOf(getServer().getOnlinePlayers().toArray().length) + "1");
                for (int i=1; i<array10h.length; i++) {
                    try {
                        array10h[i] = array10h[i-1];
                    } catch (Exception e) { Bukkit.broadcastMessage("OOF4"); }
                }
                array10h[array10h.length] = String.valueOf(getServer().getOnlinePlayers().toArray().length);
                try {
                    ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("10h.arr"));
                    out.writeObject(array10h);
                    out.flush();
                    out.close();
                } catch (Exception e) { Bukkit.broadcastMessage("OOF5"); }
            }
        }, 0, 60*600);
    }

    public void loop2() {
        timer1h.schedule( new TimerTask() {
            public void run() {
                // do your work
                Bukkit.broadcastMessage(ChatColor.AQUA + String.valueOf(getServer().getOnlinePlayers().toArray().length) + "2");
                for (int i=0; i<array1h.length; i++) {
                    try {
                        array1h[i] = array1h[i-1];
                    } catch (Exception e) { Bukkit.broadcastMessage("OOF6"); }
                }
                array1h[array1h.length] = String.valueOf(getServer().getOnlinePlayers().toArray().length);
                try {
                    ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("1h.arr"));
                    out.writeObject(array1h);
                    out.flush();
                    out.close();
                } catch (Exception e) { Bukkit.broadcastMessage("OOF7"); }
            }
        }, 0, 5*600);
    }


        public void loop3() {
        timer10m.schedule( new TimerTask() {
            public void run() {
                // do your work
                Bukkit.broadcastMessage(ChatColor.AQUA + String.valueOf(getServer().getOnlinePlayers().toArray().length) + "3");
                for (int i=0; i<array10m.length; i++) {
                    try {
                        array10m[i] = array10m[i-1];
                    } catch (Exception e) { Bukkit.broadcastMessage("OOF8"); }
                }
                array10m[array10m.length] = String.valueOf(getServer().getOnlinePlayers().toArray().length);
                try {
                    ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("10m.arr"));
                    out.writeObject(array10m);
                    out.flush();
                    out.close();
                } catch (Exception e) { Bukkit.broadcastMessage("OOF9"); }
            }
        }, 0, 30*10);
    }

    public boolean onCommand(CommandSender sender, Command command, String commandLabel, String[] args) {
        if (command.getName().equalsIgnoreCase("playerCount")) {
            sender.sendMessage(ChatColor.AQUA + String.valueOf(getServer().getOnlinePlayers().toArray().length));
        }

        return false;
    }
}