title: Java - Object storing a reference to another object
body: <p>I have to create an array of 5 objects in which some objects <em>hold a reference</em> to another object in the array.</p>
  
  <p>Is this as simple as creating the objects and using, for example, <strong>a[0] = a[1]</strong>, or am I severely underestimating what's being asked?</p>