Java Programming Ideas Fourth Edition Nineth chapter exercises

1. Third question

   Package net.mindview.interfaces;Abstract classbase{ PublicBase () {print (); }    Abstract voidprint ();} Public classTest3 extends base{Private inti =5; @Overridevoidprint () {System. out. println (i); }     Public Static voidMain (string[] args) {Test3 T=NewTest3 ();    T.print (); }}

   Output Result:

   0 5

   When calling the base class construction method, it simply allocates a chunk of memory space to the member variable of the subclass and sets the value of the memory space to the default value of 0. The member variable is assigned a value before the subclass constructor method is actually called.

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Java Programming Ideas Fourth Edition Nineth chapter exercises