... implicitly converted to a reference to object, and a reference to object may be explicitly converted to a reference to any class type. Figure 15-2 shows the previous example pictorially. Figure ... the reference to the field with calls to getFilename(). This took a while, since the project was fairly big. I also had to remember that when I wanted to get the filename, I had to call the getFilename() ... fail. To the Base Class of an Object A reference to an object can be converted implicitly to a reference to the base class of an object. Note that this does not convert the object to the type...