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[1.14.4] ASM causing issues with static initializers


MSpace-Dev
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I have a class called FileManager that manages many things to do with my custom mod files. I'm trying to create a static constant that allows me to reference an array of files whenever I want. However, my program throws an ExceptionInInitializerError.

 

I took a similar test to a basic static void main program, and the program compiled fine. I can't see what I'm doing wrong in my main program below. Here are the relevant files:

 

Log:

[11:26:14] [Client thread/ERROR] [ne.mi.fm.ja.FMLModContainer/]: Exception caught during firing event: null
	Index: 1
	Listeners:
		0: NORMAL
		1: ASM: class com.mspacedev.ModEventSubscriber onRegisterBlocks(Lnet/minecraftforge/event/RegistryEvent$Register;)V
		2: ASM: class com.mspacedev.ModEventSubscriber onRegisterItems(Lnet/minecraftforge/event/RegistryEvent$Register;)V
java.lang.ExceptionInInitializerError
	at com.mspacedev.util.Data$Chests.getChestProperties(Data.java:16)
	at com.mspacedev.ModEventSubscriber.onRegisterBlocks(ModEventSubscriber.java:28)
	at net.minecraftforge.eventbus.ASMEventHandler_0_ModEventSubscriber_onRegisterBlocks_Register.invoke(.dynamic)
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:80)

 

FileManager:

// Files
public static final ArrayList<File> chestFiles = getFilesInPath("customchests/chests/");

private static ArrayList<File> getFilesInPath(final String pathName)
{
	ArrayList<File> files = new ArrayList<>();

	File folder = new File(pathName);

	for (final File fileEntry : folder.listFiles())
	{
		if (fileEntry.isDirectory())
			continue;

		files.add(new File(fileEntry.getName()));
	}

	return files;
}

 

I call this in my RegistryEvent.Register<Block> function:

if (!FileManager.chestFiles.isEmpty())

And it returns a NullReferenceException because of the earlier ExceptionInInitializerError

Edited by MSpace-Dev
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