Automated update of JDK path for AdoptOpenJDK triggered by update in Chocolatey. PowerShell directives are provided to the VBS Windows Script Host as encoded commands so as to avoid a shell screen popping up on trigger.

updateJDK.ps1

# This contains two lines (#4, #7) which will be run as an encoded PowerShell command inside a Visual Basic Script (VBScript) scheduled task below.

# Check if 'updateJDK.vbs' is already running in another process; if so, let's quit and just let that finish the task
Get-Process -Name '*WScript*' | foreach{if($_.CommandLine -imatch 'updateJDK.vbs' -and $_.Id -ne $PID){ exit } }

# We will update the %JAVA_HOME% path upon observing discrepency between the newest available JDK (local directory) and the %JAVA_HOME%
$jdk = Get-ChildItem (Resolve-Path 'C:\Program Files\AdoptOpenJDK\') -Depth 0 -Directory | Sort-Object -Property LastWriteTime -Descending | Select-Object -First 1; if(($null -ne ([System.Environment]::GetEnvironmentVariable('JAVA_HOME'))) -and ($env:JAVA_HOME -ne $jdk)) { [System.Environment]::SetEnvironmentVariable('JAVA_HOME',$($jdk.FullName),[System.EnvironmentVariableTarget]::User) }

# Whenever we change the script (i.e., the above line of PowerShell commands), we generate the new encoded command by copying line 4 then running
[Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes( $(Get-Clipboard -Raw))) | Set-Clipboard

# Paste the new encoded command into the updateJDK.vbs after '-encodedCommand'

# Then we digitally sign the VBS using the following command:
$VBSpath = Resolve-Path "${env:OneDriveConsumer}\updateJDK.vbs"; $cert = (Get-Item -Path 'Cert:\CurrentUser\My\*' | Where-Object  -FilterScript {$_.Thumbprint -eq '1C3263285FB617CBC20B9A8E31A3A29448167AFD'}); Set-AuthenticodeSignature -Certificate $cert  -FilePath "$VBSpath"

# For instructions on how to generate a self-signed code-signing certificate in PowerShell (for the last step above), see: http://woshub.com/how-to-create-self-signed-certificate-with-powershell/

# The final step is to import the task into Windows task scheduler.

updateJDK.vbs

command = "powershell.exe -NoProfile -NonInteractive -windowstyle Hidden -nologo -encodedCommand ""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"""
' Get-Process -Name '*WScript*' | foreach{if($_.CommandLine -imatch 'updateJDK.vbs' -and $_.Id -ne $PID){ exit } }
' $jdk = Get-ChildItem (Resolve-Path 'C:\Program Files\AdoptOpenJDK\') -Depth 0 -Directory | Sort-Object -Property LastWriteTime -Descending | Select-Object -First 1; if(($null -ne ([System.Environment]::GetEnvironmentVariable('JAVA_HOME'))) -and ($env:JAVA_HOME -ne $jdk)) { [System.Environment]::SetEnvironmentVariable('JAVA_HOME',$($jdk.FullName),[System.EnvironmentVariableTarget]::User) }
' [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes( $(Get-Clipboard -Raw))) | Set-Clipboard
' $VBSpath = Resolve-Path "${env:OneDriveConsumer}\updateJDK.vbs"; $cert = (Get-Item -Path 'Cert:\CurrentUser\My\*' | Where-Object  -FilterScript {$_.Thumbprint -eq '1C3263285FB617CBC20B9A8E31A3A29448167AFD'}); Set-AuthenticodeSignature -Certificate $cert  -FilePath "$VBSpath"
' 
set shell = CreateObject("WScript.Shell")
shell.Run command,0
'' SIG '' Begin signature block
'' SIG '' MIIFaAYJKoZIhvcNAQcCoIIFWTCCBVUCAQExCzAJBgUr
'' SIG '' [SNIP ✂]
'' SIG '' ynKqgmULvv+e7ZZqKBWbRyerlXeQtzODSbIf3v+0dRkAfQc=
'' SIG '' End signature block

updateJDK.xml

<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.4" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
  <RegistrationInfo>
    <Date>2020-03-02T21:10:25.7270549</Date>
    <Author>AzureAD\MavaddatJavid</Author>
    <Description>Update the JDK to the latest AdoptJDK whenever updated by Chocolatey</Description>
    <URI>\Update JDK Path</URI>
  </RegistrationInfo>
  <Triggers>
    <EventTrigger>
      <Enabled>true</Enabled>
      <Subscription>&lt;QueryList&gt;&lt;Query Id="0" Path="Microsoft-Windows-PowerShell/Admin"&gt;&lt;Select Path="Microsoft-Windows-PowerShell/Admin"&gt;*[System[(Level=4 or Level=0) and (EventID=400 or EventID=403 or EventID=600)]]&lt;/Select&gt;&lt;Select Path="Microsoft-Windows-PowerShell/Operational"&gt;*[System[(Level=4 or Level=0) and (EventID=400 or EventID=403 or EventID=600)]]&lt;/Select&gt;&lt;Select Path="PowerShellCore/Operational"&gt;*[System[(Level=4 or Level=0) and (EventID=400 or EventID=403 or EventID=600)]]&lt;/Select&gt;&lt;Select Path="Windows PowerShell"&gt;*[System[(Level=4 or Level=0) and (EventID=400 or EventID=403 or EventID=600)]]&lt;/Select&gt;&lt;/Query&gt;&lt;/QueryList&gt;</Subscription>
    </EventTrigger>
    <EventTrigger>
      <Enabled>true</Enabled>
      <Subscription>&lt;QueryList&gt;&lt;Query Id="0" Path="Windows PowerShell"&gt;&lt;Select Path="Windows PowerShell"&gt;*[System[Provider[@Name='PowerShell'] and EventID=400]]&lt;/Select&gt;&lt;/Query&gt;&lt;/QueryList&gt;</Subscription>
    </EventTrigger>
    <EventTrigger>
      <Enabled>true</Enabled>
      <Subscription>&lt;QueryList&gt;&lt;Query Id="0" Path="Windows PowerShell"&gt;&lt;Select Path="Windows PowerShell"&gt;*[System[Provider[@Name='PowerShell'] and EventID=403]]&lt;/Select&gt;&lt;/Query&gt;&lt;/QueryList&gt;</Subscription>
    </EventTrigger>
    <EventTrigger>
      <Enabled>true</Enabled>
      <Subscription>&lt;QueryList&gt;&lt;Query Id="0" Path="Windows PowerShell"&gt;&lt;Select Path="Windows PowerShell"&gt;*[System[Provider[@Name='PowerShell'] and EventID=600]]&lt;/Select&gt;&lt;/Query&gt;&lt;/QueryList&gt;</Subscription>
    </EventTrigger>
  </Triggers>
  <Principals>
    <Principal id="Author">
      <UserId>S-1-5-18</UserId>
      <RunLevel>HighestAvailable</RunLevel>
    </Principal>
  </Principals>
  <Settings>
    <MultipleInstancesPolicy>StopExisting</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>true</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries>true</StopIfGoingOnBatteries>
    <AllowHardTerminate>true</AllowHardTerminate>
    <StartWhenAvailable>false</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>
    <IdleSettings>
      <StopOnIdleEnd>true</StopOnIdleEnd>
      <RestartOnIdle>false</RestartOnIdle>
    </IdleSettings>
    <AllowStartOnDemand>true</AllowStartOnDemand>
    <Enabled>true</Enabled>
    <Hidden>true</Hidden>
    <RunOnlyIfIdle>false</RunOnlyIfIdle>
    <DisallowStartOnRemoteAppSession>false</DisallowStartOnRemoteAppSession>
    <UseUnifiedSchedulingEngine>true</UseUnifiedSchedulingEngine>
    <WakeToRun>false</WakeToRun>
    <ExecutionTimeLimit>PT1H</ExecutionTimeLimit>
    <Priority>7</Priority>
    <RestartOnFailure>
      <Interval>PT1H</Interval>
      <Count>3</Count>
    </RestartOnFailure>
  </Settings>
  <Actions Context="Author">
    <Exec>
      <Command>%OneDriveConsumer%\updateJDK.vbs</Command>
    </Exec>
  </Actions>
</Task>