This script will disable automatic updates if it is enabled.

Remediate_JavaAutoupdateIsOn.ps1

<#
  This script will disable automatic updates if it is enabled.
 
  Name: 	   Remediate_JavaAutoupdateIsOn.ps1
  Created:     16.05.2015
  Version:     1.0
  Author:      Teksoporte.es
  Homepage:    http://blog.teksoporte.es
 
#>
 
$OSArchitecture = Get-WmiObject -Class Win32_OperatingSystem | Select-Object OSArchitecture
 
If($OSArchitecture.OSArchitecture -ne "32-bit")
    {
    Set-ItemProperty 'HKLM:\SOFTWARE\Wow6432Node\Javasoft\Java Update\Policy' -Name EnableAutoUpdateCheck -Type DWORD -Value 0 -Force
    Set-ItemProperty 'HKLM:\SOFTWARE\Wow6432Node\Javasoft\Java Update\Policy' -Name EnableJavaUpdate -Type DWORD -Value 0 -Force
    Set-ItemProperty 'HKLM:\SOFTWARE\Wow6432Node\Javasoft\Java Update\Policy' -Name NotifyDownload -Type DWORD -Value 0 -Force
    Set-ItemProperty 'HKLM:\SOFTWARE\Wow6432Node\Javasoft\Java Update\Policy' -Name NotifyInstall -Type DWORD -Value 0 -Force
	Write-Host ‘Compliant’
    }
else
    {
    Set-ItemProperty 'HKLM:\SOFTWARE\JavaSoft\Java Update\Policy' -Name EnableAutoUpdateCheck -Type DWORD -Value 0 -Force
    Set-ItemProperty 'HKLM:\SOFTWARE\JavaSoft\Java Update\Policy' -Name EnableJavaUpdate -Type DWORD -Value 0 -Force
    Set-ItemProperty 'HKLM:\SOFTWARE\JavaSoft\Java Update\Policy' -Name NotifyDownload -Type DWORD -Value 0 -Force
    Set-ItemProperty 'HKLM:\SOFTWARE\JavaSoft\Java Update\Policy' -Name NotifyInstall -Type DWORD -Value 0 -Force
	Write-Host ‘Compliant’
    }

$wowNode = ""
If($OSArchitecture.OSArchitecture -ne "32-bit"){
  $wowNode = "Wow6432Node\"
}
Set-ItemProperty "HKLM:\SOFTWARE\$wowNode`JavaSoft\Java Update\Policy" -Name EnableAutoUpdateCheck -Type DWORD -Value 0 -Force
# ...

or

$Path =  "HKLM:\SOFTWARE\JavaSoft\Java Update\Policy"
If($OSArchitecture.OSArchitecture -ne "32-bit"){
   $Path =  "HKLM:\SOFTWARE\wow6432Node\JavaSoft\Java Update\Policy"
}
Set-ItemProperty $Path -Name EnableAutoUpdateCheck -Type DWORD -Value 0 -Force
# ...

both variants shorter in 5 lines of duplicated code