NoSuchMethod size() in List<Object>?

Hey everybody,

For the SpaceBukkit project, I use the a library called JSON.simple.

Some of my users have this error:

Code:

java.lang.NoSuchMethodError: org.json.JSONArray.size()I
at me.neatmonster.spacebukkit.utilities.Utilities.getBukkitDevName(Utilities.java:294)
at me.neatmonster.spacebukkit.utilities.Checker.run(Checker.java:21)
at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:137)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:493)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)

Lines 293/294 of Utilities.java:

Code:

JSONArray resultJSONArray = (JSONArray) JSONValue.parse(result);
if (resultJSONArray.size() == 0 || resultJSONArray.size() > 1)

Let's see the first line of JSONArray.java:

Code:

public class JSONArray extends ArrayList<Object> implements List<Object>, JSONAware, JSONStreamAware {

I can't figure out why this error is occurring. The method size() of List<Object> should be included in Java, right?

Amicably, NeatMonster.

 

Some of your users-- do you include the JSON library and are you sure they're using the same library you are?

Edit: I see an org.json.simple.JSONArray class on your linked library page, but no org.json.JSONArray class.

 

I'm also sure the files are included in the final .JAR.

I renamed it, cf. screenshot.​

​

Edit: I've finally found the issue. Minequery was using the same package name as me, but not the same library. Anyways, thanks for you help @halley.​