title: What would be the default constructor header
body: <p>I am new to java and trying to grasp concepts concerning headers for the default constructor.</p>
  
  <p>The header for the first constructor in Circle is:</p>
  
  <pre><code>public Circle(String label, int radius)
  </code></pre>
  
  <p>If one decides to add a default constructor to the class. What would be the header for this default constructor?</p>
  
  <p>I have looked online but not really seen a succinct answer. </p>