You cannot have '!'s in your user name / profile name, this breaks java horribly.
This is something we cannot control or fix
You can fix it by not having '!'s in your user name / profile name name.
(Quote from MCL-1133)
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When minecraft_server.exe or minecraft_server.jar is put into a directory with a name containing the character '!', it crashes with a java.lang.NullPointerException straight away.
This is obviouslyt not intended, and it took me quite a while to understand why my server wouldn't run.
Steps to Reproduce:
1. Make a directory called '!' (or anything containing it)
2. Put minecraft_server.exe in it.
3. Run and watch it never open.
I've tested this on both jars and exes, snapshot 13w25b and 1.5.2.
Linked issues
relates to 1
Comments 4
Confirmed on Windows 7, getting this error (same as Linux)
java.lang.NullPointerException
at java.io.Reader.<init>(Unknown Source)
at java.io.InputStreamReader.<init>(Unknown Source)
at ky.<init>(SourceFile:15)
at ky.<clinit>(SourceFile:9)
at kr.g(SourceFile:37)
at ko.g(SourceFile:15)
at kx.<clinit>(SourceFile:27)
at net.minecraft.server.MinecraftServer.main(SourceFile:508)
Exception in thread "main" java.lang.ExceptionInInitializerError
at bt.<clinit>(SourceFile:7)
at xx.v(SourceFile:495)
at kx.a(SourceFile:139)
at kx.c(SourceFile:85)
at xx.<clinit>(SourceFile:310)
at aqs.<clinit>(SourceFile:362)
at kx.a(SourceFile:122)
at kx.<clinit>(SourceFile:55)
at net.minecraft.server.MinecraftServer.main(SourceFile:508)
Caused by: java.lang.NullPointerException
at java.io.Reader.<init>(Unknown Source)
at java.io.InputStreamReader.<init>(Unknown Source)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:986)
at bu.<init>(SourceFile:26)
at bu.<clinit>(SourceFile:19)
... 9 more
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
I know it’s a template text, but yes, of course this is still an issue, no-one from the developers team actually cared about that issue so far.
$ java -jar minecraft_server.1.6.2.jar
java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:78)
at java.io.InputStreamReader.<init>(InputStreamReader.java:72)
at la.<init>(SourceFile:15)
at la.<clinit>(SourceFile:9)
at kt.g(SourceFile:37)
at kq.g(SourceFile:15)
at kz.<clinit>(SourceFile:27)
at net.minecraft.server.MinecraftServer.main(SourceFile:508)
Exception in thread "main" java.lang.ExceptionInInitializerError
at bt.<clinit>(SourceFile:7)
at yb.v(SourceFile:495)
at kz.a(SourceFile:139)
at kz.c(SourceFile:85)
at yb.<clinit>(SourceFile:310)
at aqw.<clinit>(SourceFile:362)
at kz.a(SourceFile:122)
at kz.<clinit>(SourceFile:55)
at net.minecraft.server.MinecraftServer.main(SourceFile:508)
Caused by: java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:78)
at java.io.InputStreamReader.<init>(InputStreamReader.java:113)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:986)
at bu.<init>(SourceFile:26)
at bu.<clinit>(SourceFile:19)
... 9 more
Confirmed on Linux in directory “/home/myusername/!” with snapshot 13w25b JAR server file.