icret

Thank you very much, it works. My problem has been solved.

Sorry, could you tell me how to use build task to recompile and reobfuscate? I really don't know what to do...

I just use eclipse export ... How to use the gradle build task?

Hi,guys. I want to add some commands in the mod. I use FMLServerStartingEvent#registerServerCommand to add a test command. It works well in Gradle. But when I export the jar file into the .minecraft\mods folder, then run Minecarft. It's stuck in loading world interface Here is the log: [01:07:56] [Server thread/INFO]: Starting integrated minecraft server version 1.12 [01:07:56] [Server thread/INFO]: Generating keypair [01:07:57] [Server thread/INFO] [FML]: Injecting existing registry data into this server instance [01:07:59] [Server thread/INFO] [FML]: Applying holder lookups [01:07:59] [Server thread/INFO] [FML]: Holder lookups applied [01:07:59] [Server thread/INFO] [FML]: Loading dimension 0 (RSM_test2) (net.minecraft.server.integrated.IntegratedServer@278b1a95) [01:08:01] [Server thread/INFO]: Loaded 488 advancements [01:08:01] [Server thread/INFO] [FML]: Loading dimension 1 (RSM_test2) (net.minecraft.server.integrated.IntegratedServer@278b1a95) [01:08:01] [Server thread/INFO] [FML]: Loading dimension -1 (RSM_test2) (net.minecraft.server.integrated.IntegratedServer@278b1a95) [01:08:01] [Server thread/INFO]: Preparing start region for level 0 [01:08:02] [Server thread/INFO]: Preparing spawn area: 17% [01:08:03] [Server thread/INFO]: Preparing spawn area: 44% [01:08:04] [Server thread/INFO]: Preparing spawn area: 77% [01:08:05] [Server thread/FATAL] [FML]: Fatal errors were detected during the transition from SERVER_ABOUT_TO_START to SERVER_STARTING. Loading cannot continue [01:08:05] [Server thread/FATAL] [FML]: States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored UCHIJAAA minecraft{1.12} [Minecraft] (minecraft.jar) UCHIJAAA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) UCHIJAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.12-14.21.1.2387.jar) UCHIJAAA forge{14.21.1.2387} [Minecraft Forge] (forge-1.12-14.21.1.2387.jar) UCHIJAAE test{1.0.0} [test] (test.jar) UCHIJAAA tickratechanger{1.0.13} [Tickrate Changer] (TickrateChanger-Mod-1.12.jar) [01:08:05] [Server thread/FATAL] [FML]: The following problems were captured during this phase [01:08:05] [Server thread/ERROR] [FML]: Caught exception from test (java.lang.AbstractMethodError) [01:08:05] [Server thread/ERROR] [FML]: A fatal exception occurred during the server starting event net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from test (test) Caused by: java.lang.AbstractMethodError at net.minecraft.command.CommandHandler.func_71560_a(CommandHandler.java:149) ~[bj.class:?] at net.minecraftforge.fml.common.event.FMLServerStartingEvent.registerServerCommand(FMLServerStartingEvent.java:59) ~[FMLServerStartingEvent.class:?] at test.Test.start(Test.java:30) ~[Test.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_144] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_144] at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:628) ~[forge-1.12-14.21.1.2387.jar:?] at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_144] at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[guava-21.0.jar:?] at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[guava-21.0.jar:?] at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[guava-21.0.jar:?] at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[guava-21.0.jar:?] at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[guava-21.0.jar:?] at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[guava-21.0.jar:?] at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[guava-21.0.jar:?] at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:252) ~[forge-1.12-14.21.1.2387.jar:?] at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:230) ~[forge-1.12-14.21.1.2387.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_144] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_144] at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[guava-21.0.jar:?] at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[guava-21.0.jar:?] at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[guava-21.0.jar:?] at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[guava-21.0.jar:?] at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[guava-21.0.jar:?] at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[guava-21.0.jar:?] at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[guava-21.0.jar:?] at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:147) ~[LoadController.class:?] at net.minecraftforge.fml.common.Loader.serverStarting(Loader.java:831) [Loader.class:?] at net.minecraftforge.fml.common.FMLCommonHandler.handleServerStarting(FMLCommonHandler.java:299) [FMLCommonHandler.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_144] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_144] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_144] at Reflector.callBoolean(Reflector.java:737) [Reflector.class:?] at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:204) [chb.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:483) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_144] [01:08:05] [Server thread/INFO]: Stopping server [01:08:05] [Server thread/INFO]: Saving players [01:08:05] [Server thread/INFO]: Saving worlds [01:08:05] [Server thread/INFO]: Saving chunks for level 'RSM_test2'/overworld [01:08:05] [Server thread/INFO]: Saving chunks for level 'RSM_test2'/the_nether [01:08:06] [Server thread/INFO]: Saving chunks for level 'RSM_test2'/the_end [01:08:06] [Server thread/INFO] [FML]: Unloading dimension 0 [01:08:06] [Server thread/INFO] [FML]: Unloading dimension -1 [01:08:06] [Server thread/INFO] [FML]: Unloading dimension 1 [01:08:06] [Server thread/INFO] [FML]: Applying holder lookups [01:08:06] [Server thread/INFO] [FML]: Holder lookups applied [01:08:06] [Server thread/INFO] [FML]: The state engine was in incorrect state ERRORED and forced into state SERVER_STOPPED. Errors may have been discarded. [01:08:06] [Server thread/INFO] [FML]: The state engine was in incorrect state ERRORED and forced into state AVAILABLE. Errors may have been discarded. And here is code: Command.java: package test; import net.minecraft.command.CommandBase; import net.minecraft.command.CommandException; import net.minecraft.command.ICommandSender; import net.minecraft.server.MinecraftServer; import net.minecraft.util.text.TextComponentString; public class Command extends CommandBase { @Override public String getName() { return "test"; } @Override public String getUsage(ICommandSender sender) { return "/test"; } @Override public void execute(MinecraftServer server, ICommandSender sender, String[] args) throws CommandException { sender.sendMessage(new TextComponentString("test")); } } Test.java: package test; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.Mod.EventHandler; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLPostInitializationEvent; import net.minecraftforge.fml.common.event.FMLPreInitializationEvent; import net.minecraftforge.fml.common.event.FMLServerStartingEvent; @Mod(modid="test", name="test", version="1.0.0") public class Test { @EventHandler public void preInit(FMLPreInitializationEvent event) { } @EventHandler public void init(FMLInitializationEvent event) { } @EventHandler public void postInit(FMLPostInitializationEvent event){ } @EventHandler public void start(FMLServerStartingEvent event){ event.registerServerCommand(new Command()); } } Sorry, my English is poor.