My problem is that my forge 1.10.2 (12.18.3.2185) server won't start. I have downloaded the windows installer and it downloaded some files:

 

Spoiler

subfolder\file - md5

forge-1.10.2-12.18.3.2185-universal.jar - B3EA63DEE1745F197F2BA12DD8FF8887

minecraft_server.1.10.2.jar - 41C4E081DEFD80B09CB0391C894C2F3C

com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar - 72553B9B2C93CCE5B6A0A02D4DCE9AC5

org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar - C5CC4613BBDFBA3CCF5F0AB85390D0B8

com\typesafe\config\1.2.1\config-1.2.1.jar - 7CA00EE2DC5F594451BD5BF78330CAEB

jline\jline\2.13\jline-2.13.jar - F251BA666CCCB260FF7215B2CBEEE8D4

net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar - 13560A58A79B46B82057686543E8D727

net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar - 934B2D91C7C5BE4A49577C9E6B40E8DA

lzma\lzma\0.0.1\lzma-0.0.1.jar - A3E3C3186E41C4A1A3027BA2BB23CDC6

net\minecraftforge\MercuriusUpdater\1.10.2\MercuriusUpdater-1.10.2.jar - DC4CC7DB8347DF3515CB29ADB4712A9D

org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar - 7F7B169667D14B3092A285BADF9487F7

org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar - D9FC987043FCF8C25D0F73BC7CA36A47

org\scala-lang\plugins\scala-continuations-library_2.11\1.0.2\scala-continuations-library_2.11-1.0.2.jar - F2A6B8FB8451839EFB670D03DFD79EBD

org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar - 6F9208AF82F7C2811A6C0DE049CFE279

org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar - FE20384E064DD025E144BEE2858ABF1A

org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar - 08B829B97A4258421B7E5C902B8A08AC

org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar - 5D8C98094F1AE58184ED2E087FCA7C44

org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar - A54CA733EF0EDE9C343F1CE9ED0B527C

net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar - 8FC4D4E0129244F9FD39650C5F30FEB2

java3d\vecmath\1.5.2\vecmath-1.5.2.jar - E5D2B7F46C4800A32F62CE75676A5710

 

Afterwards, I started the minecraft server jar, accepted the eula, and started it again. Starting the forge file wasn't working and gave me this error message:

 

Spoiler

java -jar forge-1.10.2-12.18.3.2185-universal.jar
A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.base/java.lang.reflect.Method.invoke(Unknown Source)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:62)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:31)
Caused by: java.lang.ClassCastException: java.base/jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to java.base/java.net.URLClassLoader
        at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34)
        at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
        ... 6 more

 

I am running java 10:

 

Spoiler

java version "10.0.1" 2018-04-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)

 

Searching on Google, I saw some people encountering this problem as well, but I wasn't able to find any solution to my problem. I think, the problem is, that I'm missing some files, but could somebody please provide me with instructions on where / how to get these files?

 

I know that 1.10.2 isn't the latest MC version, but as there haven't all mods made their way to 1.12 I hope that somebody could help me ?

Edited June 7, 20187 yr by scrouthtv

Use Java 8.

that did it

我也是。我使用Java 8，但是我也有这个问题。为什么？

6 minutes ago, hardy20080505 said:

我也是。我使用Java 8，但是我也有这个问题。为什么？

This thread is nearly 2 years old, if you're having an issue, you should make your own thread.

Also please keep this forum in english.

 

Keep in mind also that versions below 1.14.4 are no longer supported. See the LTS link at the top of every page.