Slide 1

CS202 Java-70

Constructors

lLike C++, constructors are implicitly invoked

lThey allow us to initialize data members to other values than their zero equivalent

lNote, unlike C++ data members are automatically initialized prior to a constructor invokation (to their zero equivalent) --- even if you provide a constructor

lThe default constructor has no arguments

lIf you write a constructor with arguments, then the default constructor is not provided automatically and you cannot create objects without arguments specified

class list {

list () { ///blablabla}

list (int arg) { //blablabla }

//we create objects via;

list l = new list(10); //uses the int arg version

lYes, you can overload multiple constructors just so the argument lists are unique