The problem with people who have no vices is that generally you can be pretty sure they're going to have some pretty annoying virtues.
In the Java programming language, the class
Object forms the root of the class hierarchy, allowing other classes to deal with arbitrary types of objects by declaring that they work with
Object. In Chapter 3 you saw a
SingleLinkQueue class that used
Cell objects to hold a reference to any
Object you wanted in the queue. This provides great flexibility, but with some inconvenience: If you know that the elements in question are
String objects, for example, then you have to cast the result of the
remove method each time.
This use of
Object as a generic reference is also ...