摘要:
As usual, constructors are different from other kinds of methods. This is also true when polymorphism is involved. Even though constructors are not po... 阅读全文
摘要:
Create a simple class. Inside a second class, define a reference to an object ofthe first class. Use lazy initialization to instantiate this object. 1... 阅读全文
摘要:
If you want the references initialized,you can do it: 1.At the point the objects are defined.This means that they'll always be initialized before the... 阅读全文