Cannot get setupDecompWorkspace to finish building

[Puffy73]

Hi!

First-time poster, not 100% sure if this goes here but here goes.

I've been trying to install forge all morning. When I run "gradlew setupDecompWorkspace" I get this:

Spoiler

C:\Users\Tommy\Desktop\Mod Environment>gradlew setupDecompWorkspace
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/2.14/userguide/gradle_daemon.html.
This mapping 'snapshot_20161220' was designed for MC 1.11! Use at your own peril.
#################################################
         ForgeGradle 2.2-SNAPSHOT-7a557d2
  https://github.com/MinecraftForge/ForgeGradle
#################################################
               Powered by MCP unknown
            http://modcoderpack.com
         by: Searge, ProfMobius, Fesh0r,
         R4wk, ZeuX, IngisKahn, bspkrs
#################################################
:deobfCompileDummyTask
:deobfProvidedDummyTask
:getVersionJson
:extractUserdev UP-TO-DATE
:extractDependencyATs SKIPPED
:extractMcpData SKIPPED
:extractMcpMappings SKIPPED
:genSrgs SKIPPED
:downloadClient SKIPPED
:downloadServer SKIPPED
:splitServerJar SKIPPED
:mergeJars SKIPPED
:deobfMcSRG SKIPPED
:decompileMc SKIPPED
:fixMcSources
:applySourcePatches SKIPPED
:remapMcSources SKIPPED
:recompileMc FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':recompileMc'.
> Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "C:\Program Files\Java\jre1.8.0_131"

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 55.221 secs

 

So naturally, I tried to amend the issue by declaring JAVA_HOME in my environment variables. I set it to "C:\Program Files (x86)\Java\jdk1.8.0_131". However when I run "gradlew setupDecomWorkspace" with JAVA_HOME declared I get this error

Spoiler

C:\Users\Tommy\Desktop\Mod Environment>gradlew setupDecompWorkspace
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/2.14/userguide/gradle_daemon.html.

FAILURE: Build failed with an exception.

* What went wrong:
Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized JVM option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/2.14/userguide/gradle_daemon.html
Please read the following process output to find out more:
-----------------------
Error occurred during initialization of VM
Could not reserve enough space for 3145728KB object heap

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

C:\Users\Tommy\Desktop\Mod Environment>

 

How do I remedy this? Or am I doing something totally stupid?

[Puffy73]

Whoops! look at me being a pleb. Thanks! that helped!