Functions/Get-JavaExePath.ps1
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function Get-JavaExePath { [CmdletBinding()] param() try { Write-Verbose 'Checking installed programs list for an existing Java installation on this host.' $javaProductGuid = (Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -match '^Java (?:8|9) Update \d{1,3}.*$'} | Sort-Object -Property Name -Descending | Select-Object -First 1).IdentifyingNumber if ($javaProductGuid) { Write-Verbose "Java is installed. Getting the installation location from HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$javaProductGuid" $javaInstallationPath = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$javaProductGuid" -Name 'InstallLocation').InstallLocation.TrimEnd('\') Write-Verbose "Java installation path detected is $javaInstallationPath" Write-Verbose "Checking $javaInstallationPath for \bin\java.exe" if (Test-Path "$javaInstallationPath\bin\java.exe") { Write-Verbose "Found $javaInstallationPath\bin\java.exe" "$javaInstallationPath\bin\java.exe" } else { Write-Verbose "Could not find /bin/java.exe in $javaInstallationPath" } } else { Write-Verbose "Java was not found in the installed programs list" } } catch { Write-Warning 'Something went wrong attempting to detect the Java installation or its installation path. The error was $_' } } |