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powershelljarexecutable-jarexecute

Run a jar file from powershell

I want to run a jar file from powershell. Till now I have been able to find this:

Start-Process -FilePath java -ArgumentList '-jar Upload_Download.jar FilePickupPath= $pickuppath FileDownloadPath= $download' -PassThru -RedirectStandardError E:\stderr.txt

Some how this is not working. Any suggestions?

Solution

  • Powershell has multiple string quotation characters that behave different ways. The double quote " allows evaluations within the string whilst the single quote ' doesn't.

    As a practical example:

    $foo=42
write-host "The foo: $foo"
# Prints The foo: 42
write-host 'The foo: $foo'
# Prints The foo: $foo

    The command uses single quote like so, (backtick is used to split the code into screen friendly format)

    Start-Process -FilePath java `
-ArgumentList '-jar Upload_Download.jar FilePickupPath= $pickuppath fileDownloadPath= $download' `
-PassThru -RedirectStandardError E:\stderr.txt

    This will pass literally $pickuppath and $download. The intention is likely to pass $pickuppath and $download's values.

    In order to resolve the issue, use double quotes.