[tor-bugs] #19624 [Metrics/ExoneraTor]: Comply to Metrics Java style guide

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#19624: Comply to Metrics Java style guide
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 Reporter:  iwakeh              |          Owner:  iwakeh
     Type:  task                |         Status:  needs_review
 Priority:  Medium              |      Milestone:  ExoneraTor 1.0.0
Component:  Metrics/ExoneraTor  |        Version:
 Severity:  Normal              |     Resolution:
 Keywords:  metrics-2017        |  Actual Points:
Parent ID:  #19611              |         Points:
 Reviewer:                      |        Sponsor:
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Comment (by iwakeh):

 Please find another commit on the
 [https://gitweb.torproject.org/user/iwakeh/exonerator.git/log/?h=task-19624
 above branch] that replaces the legacy commons lang version (catering to
 java 1.2) by lang3 (designed for Java 7 and up).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19624#comment:16>
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