Write
a method that takes an object and recursively prints all the classes in that
object’s hierarchy.
In
ToyTest.java,
comment out
Toy’s
default constructor and explain what happens.
Create
a new type of collection that uses a
Vector.Capture
the type of the first object you put in it, and then allow the user to insert
objects of only that type from then on.
Write
a program to determine whether an array of
char
is a primitive type or a true object.
Implement
clearSpitValve( )
as described in this chapter.
Implement
the
rotate(Shape)
method described in this chapter, such that it checks to see if it is rotating a
Circle
(and, if so, doesn’t perform the operation).