ChristopherSchultz commented on issue #232: Fix handling of query parameters 
with no value, like `?foo`
URL: https://github.com/apache/tomcat/pull/232#issuecomment-573055772
 
 
   I agree that `getParameter` should remain: a parameter present with no value 
should return `""` and not `null`. `getParameterValues` (and also 
`getParameterMap`) should return `new String[0]` if there are no values but the 
parameter is present, not `null`.
   
   Otherwise, there is no way to tell the difference between parameters which 
are present (e.g. `foo` in your example) and those that are not (e.g. `bar`, 
which isn't in your example URL).
   
   I think this means I disagree 100% with the premise of this PR.

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