title: How to recognize calling object?
body: <p>Can I recognize my calling object? <br>
  I can create <em>stacktrace</em> for <em>classname</em> of <code>A</code> but how can I access an object of <code>A</code>?</p>
  
  <pre><code>class A{
      void method(){
          new B().method();
      }
  }
  
  class B{
      void method(){
          // can i recognize Object A ????
      }
  }
  </code></pre>