Java Removal Tool

$RegUninstallPaths = @(
    'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall',
    'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall')
$VersionsToKeep = @('Java 7 Update 40','Java 7 Update 40 (64-bit)','Java 8 Update 25','Java 8 Update 25 (64-bit)')

#Kill anything that is running the jre executable
Get-WmiObject Win32_Process | Where {$_.ExecutablePath -like '*Program Files*\Java\*'} |
    Select @{n='Name';e={$_.Name.Split('.')[0]}} | Stop-Process -Force
#Kill IE, kill all of the IEs, they're as bad as lawyers
get-process -Name *iexplore* | Stop-Process -Force -ErrorAction SilentlyContinue

#Filter results from RegUninstallPaths to just Java entries by specified Publishers
$UninstallSearchFilter = { ($_.GetValue('DisplayName') -like '*Java*') -and
    (($_.GetValue('Publisher') -eq 'Oracle') -or
    ($_.GetValue('Publisher') -eq 'Sun Microsystems, Inc.')) -and
    (Foreach{$VersionsToKeep -notcontains $_.GetValue('DisplayName')})}

#Uninstall filtered results
foreach ($Path in $RegUninstallPaths) {
    if (Test-Path $Path) {
        Get-ChildItem $Path | Where $UninstallSearchFilter |
        Foreach { Start-Process 'C:\Windows\System32\msiexec.exe' "/x $($_.PSChildName) /qn" -Wait}
    }
}

#Script by Phillip Sugg 10/16/2014
#We would like you to know that those responsible for the comments, have just been sacked