title: Call a method after the constructor has ended
body: <p>I need to call a method after the constructor has ended, and I have no idea what is the better approach.</p>
  <p>I have this class:</p>
  <pre class="lang-java prettyprint-override"><code>class A {
      public A() {
          // ...
      }
          
      public void init() {
          // call after the constructor
      }
  }
  </code></pre>
  <p>How do I call <code>init()</code> after the class <code>A</code> has been created?</p>