SettingsManger Help

I am getting an error while loading my crates plugin. Here is the stacktrace:

Error (open) Error (close)

Could not load 'plugins\SuperCrates.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ExceptionInInitializerError
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:292) [spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:524) [spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
Caused by: java.lang.ExceptionInInitializerError
at me.roboticplayer.supercrates.SuperCrates.<init>(SuperCrates.java:12) ~[?:?]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.7.0_79]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[?:1.7.0_79]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.7.0_79]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[?:1.7.0_79]
at java.lang.Class.newInstance(Class.java:379) ~[?:1.7.0_79]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:76) ~[spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
... 6 more
Caused by: java.lang.NullPointerException
at me.roboticplayer.supercrates.SettingsManager.<init>(SettingsManager.java:66) ~[?:?]
at me.roboticplayer.supercrates.SettingsManager.<clinit>(SettingsManager.java:18) ~[?:?]
at me.roboticplayer.supercrates.SuperCrates.<init>(SuperCrates.java:12) ~[?:?]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.7.0_79]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[?:1.7.0_79]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.7.0_79]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[?:1.7.0_79]
at java.lang.Class.newInstance(Class.java:379) ~[?:1.7.0_79]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:76) ~[spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot-1.8.8.jar:git-Spigot-d97e08b-880a532]
... 6 more
[20:55:53]

SuperCrates Line 12:

Code:

SettingsManager settings = SettingsManager.getInstance();

SettingsManager Line 18:

Code:

static SettingsManager instance = new SettingsManager();

SettingsManager Line 66:

Code:

Logger log = p.getLogger();

In line 66, "p" is referring to this:

Code:

Plugin p;

I am trying to use a settings manager so that I can better manage my files (currently I have a config.yml and a crates.yml). Any help?

 

@henderry2019
p can be null.

 

@Gater12 Ok, how would I handle it if p is null? i.e, what should I do?

 

@henderry2019

Actually create a constructor for the class and don't use static initialization.

It's really that simple.

 

@mythbusterma
So would I be creating a constructor for the SettingsManager class in my SuperCrates or vice versa? Also, how would I go about creating a constructor? I've never actually used one. Could you provide an example or show me somewhere that provides an example?

 

Every time you're instantiating a class you are invoking a constructor.

 

@RainoBoy97 @mythbusterma I've never used something like this before. How would I invoke a constructor properly, and what do you mean by when I instantiate a class?

 

@henderry2019 It means that you need to go back to learning more about Java Writing Bukkit plugins should come second. This is a forum about Bukkit and not Java.

 

https://docs.oracle.com/javase/tutorial/java/javaOO/constructors.html
https://docs.oracle.com/javase/tutorial/java/javaOO/objectcreation.html