title: What is the difference between year and year-of-era?
body: <p>The <code>DateTimeFormatter</code> class documentation defines separate symbols <code>u</code> for year and <code>y</code> year-of-era: <a href="https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html#patterns">https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html#patterns</a></p>
  
  <p>What is the difference between year and year-of-era?</p>