title: Can Java enum class set default value
body: <p>Mycode is </p>
  
  <pre><code>public enum PartsOfSpeech2 {
  
      n("noun"),
      wp("标点"),
      a("adjective"),
      d("conjunction"),
      ...;
  </code></pre>
  
  <p>which I want </p>
  
  <pre><code>public enum PartsOfSpeech2 {
  
      n("noun"),
      wp("标点"),
      a("adjective"),
      d("conjunction"),
      %("noun");
  </code></pre>
  
  <p>can I hava a default value which is not in it， can it be set as a  default value？
  because I have a type is "%", but enum is not support %, so I want a default value to solve it</p>