java.lang.ClassNotFoundException was muss ich tun damit das geht?

[17:56:01] [CanaryMod] [INFO]: Enabling Plugins...

[17:56:01] [CanaryMod] [ERROR]: Exception while enabling plugin: HelloWorld

net.canarymod.exceptions.PluginLoadFailedException: Failed to load plugin

    at net.canarymod.plugin.lifecycle.JavaPluginLifecycle._load(JavaPluginLifecycle.java:36) ~[CanaryMod.jar:1.7.10-1.1.2]

    at net.canarymod.plugin.lifecycle.PluginLifecycleBase.load(PluginLifecycleBase.java:71) ~[CanaryMod.jar:1.7.10-1.1.2]

    at net.canarymod.plugin.lifecycle.JavaPluginLifecycle.load(JavaPluginLifecycle.java:16) ~[CanaryMod.jar:1.7.10-1.1.2]

    at net.canarymod.plugin.PluginManager.enablePlugin(PluginManager.java:68) ~[CanaryMod.jar:1.7.10-1.1.2]

    at net.canarymod.plugin.PluginManager.enableAllPlugins(PluginManager.java:101) [CanaryMod.jar:1.7.10-1.1.2]

    at net.canarymod.Canary.enablePlugins(Canary.java:284) [CanaryMod.jar:1.7.10-1.1.2]

    at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:278) [CanaryMod.jar:1.7.10-1.1.2]

    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:391) [CanaryMod.jar:1.7.10-1.1.2]

    at net.minecraft.server.MinecraftServer$3.run(MinecraftServer.java:742) [CanaryMod.jar:1.7.10-1.1.2]

Caused by: java.lang.ClassNotFoundException: The class helloworld.HelloWorld could not be found!

    at net.canarymod.CanaryClassLoader.findClass(CanaryClassLoader.java:55) ~[CanaryMod.jar:1.7.10-1.1.2]

    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_241]

    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_241]

    at net.canarymod.plugin.lifecycle.JavaPluginLifecycle._load(JavaPluginLifecycle.java:27) ~[CanaryMod.jar:1.7.10-1.1.2]

    ... 8 more

Caused by: java.lang.ClassNotFoundException: helloworld.HelloWorld

    at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_241]

    at net.canarymod.CanaryClassLoader.findClass(CanaryClassLoader.java:37) ~[CanaryMod.jar:1.7.10-1.1.2]

    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_241]

    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_241]

    at net.canarymod.plugin.lifecycle.JavaPluginLifecycle._load(JavaPluginLifecycle.java:27) ~[CanaryMod.jar:1.7.10-1.1.2]

    ... 8 more

Das sagt die Shell wenn ich versuche das plugin zum laufen zu bringen was kann ich dagegen tun?

Computer, programmieren, Java, Minecraft, Minecraft Plugin
Minecraft plugin scheduler?

Hallo leute, sobald ich zwei cooldowns parallel am laufen habe, und einer durch ist, gibt es beim zweiten cooldown folgende errormeldung. Weiß jemand wo das Problem ist?:

java.lang.NullPointerException
    at de.johannes.hcfabilitys.main.ABILITYT$1.run(ABILITY.java:101) ~[?:?]
    at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
    at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]

Hier der code:

public static void inGameCountDown(Player p, Player t) {
tp = Bukkit.getScheduler().scheduleSyncRepeatingTask(Main.getPlugin(), new Runnable() {
@Override
public void run() {
System.out.println("Activating run for: " + p.getName());
if(cooldown.get(p) == null) {
returnInventory(p, t);
Bukkit.getScheduler().cancelTask(tp);
}
if (cooldown.get(p) == 1) {
System.out.println("Canceling cooldown for: " + p.getName());
Bukkit.getScheduler().cancelTask(tp);
cooldown.remove(p);
returnInventory(p, t);
}
if(cooldown.containsKey(p)) {
int c = cooldown.get(p);
c--;
System.out.println("Hashmap contains key for: " + p.getName() + "   " + c);
cooldown.put(p, c);
}
}
}, 20, 20);
}
Java, Bukkit, Spigot, Minecraft Plugin
[09:03:02 ERROR]: Error occurred while enabling plugin v1.0 (Is it up to date?) java.lang.NullPointerException?

Hallo seit kurzem habe ich das Problem das mein Chatclear Command nicht geht. Beim Start kommt diese Fehlermeldung:

[09:03:02 ERROR]: Error occurred while enabling plugin v1.0 (Is it up to date?)

java.lang.NullPointerException

    at de.name.plugin.main.Main.onEnable(Main.java:25) ~[?:?]

    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:335) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugin(CraftServer.java:356) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.enablePlugins(CraftServer.java:316) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.reload(CraftServer.java:746) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.Bukkit.reload(Bukkit.java:534) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchServerCommand(CraftServer.java:632) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at net.minecraft.server.v1_8_R1.DedicatedServer.aM(DedicatedServer.java:353) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:317) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot.jar:git-Spigot-c3c767f-33d5de3]

    at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]

Der Command ist in der plugin.yml und in der Main eingetragen. Eclipse selber erkennt auch keinen Fehler

PC, Technik, Java, Command, Eclipse, Error, Minecraft Plugin

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