Mon Minecraft bug

comment mettre a jour java ou minecraft

tu vas sur le site de java officiel et tu regardes si tu possède la dernières version

j' ais mis a jour java mais s' est pas sa comment mettre a jour minecraft

il me mais sa: ---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 11/05/14 16:11
Description: Starting integrated server

java.lang.ExceptionInInitializerError
at net.minecraft.server.MinecraftServer.<init>(SourceFile:120)
at bvj.<init>(SourceFile:38)
at ban.a(SourceFile:1610)
at bdt.e(SourceFile:162)
at bdu.a(SourceFile:214)
at bcl.a(SourceFile:186)
at bdt.a(SourceFile:187)
at bof.b(SourceFile:852)
at ban.ak(SourceFile:801)
at ban.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)
Caused by: java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:61)
at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
at nb.<clinit>(SourceFile:31)
... 11 more
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:57)
... 15 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl.<init>(Unknown Source)
at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source)
at java.nio.channels.Pipe.open(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.<init>(Unknown Source)
at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
... 18 more
Caused by: java.net.ConnectException: Connection timed out: connect
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Unknown Source)
at sun.nio.ch.Net.connect(Unknown Source)
at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)
at java.nio.channels.SocketChannel.open(Unknown Source)
... 27 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at net.minecraft.server.MinecraftServer.<init>(SourceFile:120)
at bvj.<init>(SourceFile:38)

-- Starting integrated server --
Details:
Level ID: world
Level Name: world
Stacktrace:
at ban.a(SourceFile:1610)
at bdt.e(SourceFile:162)
at bdu.a(SourceFile:214)
at bcl.a(SourceFile:186)
at bdt.a(SourceFile:187)

-- Screen render details --
Details:
Screen name: bea
Mouse location: Scaled: (127, 54). Absolute: (255, 370)
Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
at bof.b(SourceFile:852)
at ban.ak(SourceFile:801)
at ban.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)

-- System Details --
Details:
Minecraft Version: 1.7.9
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_21, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 137310168 bytes (130 MB) / 175570944 bytes (167 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.9
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics GL version 3.1.0 - Build 9.17.10.3347, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: Français (France)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

je ne sais pas
pardon de ne pas pouvoir t'aider plus que sa =(

avant de faire sa je pense qu'il faudrait mieux faire un copier/coller de tes maps
pour ca tu vas dans ton dossier minecraft puis dans save et puis tu copies et tu colles autre parts

perso . au pire il fait un cp de son dossier. le but est juste de faire le ménage. Si le jeu repart comme il faut. il remet ses maps.