title: Local variables underline when reallocating in Android Studio
body: <p>When reallocating local variables in Android Studio, why is the underline under the variable name?
  I think because functional programming does not recommend reassigning variables.
  Is it right?</p>
  
  <p>Underline is created in defaultDicWordDuplicationFlag variable</p>
  
  <pre><code>boolean defaultDicWordDuplicationFlag = false;
  
  for (DicWord item: outDefaultDicWords) {
      if (item.word.equals(dicword.word)) {                           
          defaultDicWordDuplicationFlag = true;
          break;
      }
  }
  
  if (defaultDicWordDuplicationFlag == true)
      continue;
  </code></pre>