[MacPorts] #53963: jython @2.7.0: Unsupported major.minor version 51.0

[MacPorts]

#53963: jython @2.7.0: Unsupported major.minor version 51.0
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  Reporter:  mfacorcoran  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  jython       |
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Comment (by chrstphrchvz):

 I agree that the cause of this is that Java 6 or older is being used,
 whereas Java 7 is required by the current Jython. I have opened a pull
 request that forces Java 8 to be used (since it is currently only possible
 to specify a single version rather than a maximum version using the Java
 portgroup): https://github.com/macports/macports-ports/pull/5130

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Ticket URL: <https://trac.macports.org/ticket/53963#comment:4>
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