title: Does an object in java have any memory size constraints?
body: <p>Can we have any size of Java object without any fear of exception? I am going to use an object of a class that consists of an <code>ArrayList</code> of thousands of other objects that contains couples of <code>HashMap</code>s and <code>ArrayList</code>s and many other non primitive type.</p>
  
  <p>Thank you</p>