How to run minecraft under linux ubuntu 15.04?

Question

linux

Good afternoon.
I have a normal computer - it exports everything to Win 10.
I installed Linux Ubuntu 15.04 for work - I want to take a break to play Minecraft on the minecraftonly.ru server
. The guys have a Linux launcher.
I launch - and it crashes at startup, while downloading updates.
I installed Java 8 and Java 7 on the computer.
These are the errors that the game console sends.

2015-07-30 22:29:37 [INFO] Operating system name: Linux
2015-07-30 22:29:37 [INFO] Operating system version: 3.19.0-25-generic
2015-07-30 22:29:37 [INFO] Operating system architecture: i386
2015-07-30 22:29:37 [INFO] JRE vendor name: Oracle Corporation
2015-07-30 22:29:37 [INFO] JRE version number: 1.8.0_45
Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 
июл 30, 2015 10:29:45 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
июл 30, 2015 10:29:45 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
июл 30, 2015 10:29:45 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) Server VM, version 1.8.0_45, running on Linux:i386:3.19.0-25-generic, installed at /usr/lib/jvm/java-8-oracle/jre
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [INFO] [STDERR] Warning: version of ForgeMultipart-universal-1.6.4-, 1.0.1.268 is newer than request 1.0.0.244
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod atomicstryker.dynamiclights.common.DLFMLCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Loading tweaker fontfix.FontFixForgeTweaker from FontFix-1.0.jar
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod invtweaks.forge.asm.FMLPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.6.4_HD_C6.jar
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod mrtjp.projectred.compatibility.CompatibilityCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod appeng.transformer.AppEngCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [INFO] [ForgeModLoader] [AppEng] Core Init
2015-07-30 22:29:45 [WARNING] [ForgeModLoader] The coremod ic2.core.coremod.IC2core does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Loading tweak class name fontfix.FontFixForgeTweaker
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Loading tweak class name optifine.OptiFineForgeTweaker
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2015-07-30 22:29:45 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2015-07-30 22:29:45 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
  at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
  at java.util.ArrayList$Itr.remove(ArrayList.java:865)
  at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
  at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

What to do tell me, guys?

Answer 1

It turned out that you just need to install the JAVA 6 version - and delete all the rest.

Answer 2

Try setting Java 7 as default sudo update-java-alternatives -s java-7-oracle. Switch back to 8 sudo update-java-alternatives -s java-8-oracle

Answer 3

Try Wine.