[logback-dev] [JIRA] Created: (LBCLASSIC-111) Improve performance by removing StringBuffer where possible

[Rick Beton (JIRA)]

Improve performance by removing StringBuffer where possible
-----------------------------------------------------------

                 Key: LBCLASSIC-111
                 URL: http://jira.qos.ch/browse/LBCLASSIC-111
             Project: logback-classic
          Issue Type: Bug
    Affects Versions: 0.9.15
         Environment: any
            Reporter: Rick Beton
            Assignee: Logback dev list
            Priority: Minor


StringBuffer is used in some local variables. The newer StringBuilder alternative will improve the performance slightly in such cases.

E.g.in FileNamePattern

  public String convert(Object o) {
    Converter<Object> p = headTokenConverter;
    StringBuffer buf = new StringBuffer();
    while (p != null) {
      buf.append(p.convert(o));
      p = p.getNext();
    }
    return buf.toString();
  }

should change to use

    StringBuilder buf = new StringBuilder();


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