Solved Player CountDowns

Hi,

I have this minigame where I use multiple arenas, and when there are enough players in an arena, I start a countdown.

The problem is, if two arena's are both in the countdown, I generate an NPE and it's quite memory taking.

Could anyone tell me how to do it properly

Code:java

public void playerCountdown(final String arenaName) {
        countDownTime.put(arenaName.toLowerCase(), seconds);
        final BukkitScheduler bs = Bukkit.getScheduler();
        final int task = bs.scheduleSyncRepeatingTask(m, new Runnable() {
            public void run() {
                if (getTime(arenaName) > 0) {
                    updateTime(arenaName);
                    if (getTime(arenaName) % 5 == 0 || getTime(arenaName) < 6) {
                        for (Player p : Bukkit.getOnlinePlayers()) {
                            if (m.ingame.isIngame(p)) {
                                if (m.ingame.getCurrentArena(p).equals(
                                        arenaName.toLowerCase())) {
                                    p.sendMessage(Messages.prefix + getTime(arenaName)
                                            + " seconds till start!");
                                }
                            }
                        }
                    }
                } else {
                    ArenaTime.toggleIngame(arenaName.toLowerCase());
                    for (Player p : Bukkit.getOnlinePlayers()) {
                        if (m.ingame.isIngame(p)) {
                            if (m.ingame.getCurrentArena(p).equals(
                                    arenaName.toLowerCase())) {
                                m.arena_start.startGame(
                                        arenaName.toLowerCase(), p);
                                countDownTime.remove(arenaName.toLowerCase());
                            }
                        }
                    }
                }
            }
        }, 0, 20);
        bs.scheduleSyncDelayedTask(m, new Runnable() {
            public void run() {
                bs.cancelTask(task);
            }
        }, (16*20) + 1);
    }
 
    private void updateTime(String arenaName) {
        int old = countDownTime.get(arenaName.toLowerCase());
        int new_time = old - 1;
        countDownTime.put(arenaName.toLowerCase(), new_time);
    }
 
    private int getTime(String arenaName) {
        return countDownTime.get(arenaName.toLowerCase()); //Line 72 <-----
    }
 
}

ERROR

Code:

[11:41:52 WARN]: [Strikerz] Task #6 for Strikerz v0.1 generated an exception
java.lang.NullPointerException
        at me.dubehh.Mech.Countdown.getTime(Countdown.java:72) ~[?:?]
        at me.dubehh.Mech.Countdown.access$0(Countdown.java:71) ~[?:?]
        at me.dubehh.Mech.Countdown$1.run(Countdown.java:30) ~[?:?]
        at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java
:53) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
        at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.mainThreadHea
rtbeat(CraftScheduler.java:345) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779c
ff-b3072jnks]
        at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:6
00) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
        at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:2
60) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
        at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:5
58) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
        at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java
:469) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]
        at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:6
28) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-56-g3779cff-b3072jnks]

Solved,

Start using BukkitRunnables :O

EDIT by Moderator: merged posts, please use the edit button instead of double posting.