title: Date format in excel with apache poi
body: <p>I use apache poi to write excel file with java. What I need is a way to use "directly" <a href="https://support.office.com/en-us/article/Format-a-date-the-way-you-want-8e10019e-d5d8-47a1-ba95-db95123d273e?ui=en-US&amp;rs=en-US&amp;ad=US" rel="nofollow noreferrer">this</a> format codes to format dates when writing Date variables in some excel cell, eg. something like "dddd dd/mm/yyyy".<br>
  The BuiltInFormats doesn't seem a complete collection of what I need.<br>
  I think an optimal solution would use a carefully set instance of XSSFCellStyle to achieve the goal.</p>