[MacPorts] #61445: Java version not detected on macOS Big Sur 11.0.1

[MacPorts]

#61445: Java version not detected on macOS Big Sur 11.0.1
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  Reporter:  breun   |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:          |
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Comment (by catap):

 I've discovered that `-f` is a cause for strange behaviour:

 {{{
 catap at Kirills-mini-m1 ~ % env | grep JAVA
 catap at Kirills-mini-m1 ~ % /usr/libexec/java_home -V
 Matching Java Virtual Machines (2):
     16 (arm64) "Azul Systems, Inc." - "Zulu 16.0.65-ea"
 /Library/Java/JavaVirtualMachines/zulu-jdk16/Contents/Home
     11.0.9.1 (arm64) "Azul Systems, Inc." - "Zulu 11.43.1007"
 /Library/Java/JavaVirtualMachines/zulu-jdk11/Contents/Home
 /Library/Java/JavaVirtualMachines/zulu-jdk16/Contents/Home
 catap at Kirills-mini-m1 ~ % /usr/libexec/java_home -v 1.8+
 /Library/Java/JavaVirtualMachines/zulu-jdk16/Contents/Home
 catap at Kirills-mini-m1 ~ % /usr/libexec/java_home -f -v 1.8+
 The operation couldn’t be completed. Unable to locate a Java Runtime that
 supports (null).
 Please visit http://www.java.com for information on installing Java.

 catap at Kirills-mini-m1 ~ %
 }}}

 I have no idea that `-f` means because I haven't found it inside man page
 for `java_home` for mac OS Catalina and Big Sur.

 => I've opened PR: https://github.com/macports/macports-ports/pull/9264
 that solved issue on two machines with Big Sur.

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Ticket URL: <https://trac.macports.org/ticket/61445#comment:15>
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