Java constructor does not look the way it should -

i referencing y. daniel liang's book "introduction java programming, comprehensive version, ninth edition" when ask question. every time see object created using constructor, goes :

car engine = new car().  

but in daniel liang's book, found following code (only first 9 lines written here):

   public class simplegeometricobject {       private string color = "white";       private boolean filled;       private java.util.date datecreated;        /** construct default geometric object */       public simplegeometricobject() {          datecreated = new java.util.date();    } 

what don't understand how come object "datecreated" not created in normal way, ie.:

simplegeometricobject datecreated = new simplegeometrciobject(); 

i'm confused.

actually datecreated object class date in package java.util , inside object defining simplegeometricobject

in other words java guys wrote this:

  package java.util;   public class date{     //with own attributes     public date(){       ...     //and own constructor    }      ...//and it's own methods } 

and provided developpers can use in our own class/objects , way if import package import java.util.date; in beginning of file need construct date follows : date objectdate = new date();