Computes the classes referred to by another class. The argument should
be a input stream containing the bytecodes for the class. The return
value is a set containing the names of the classes referred to by the
class bytecodes in the input. The input stream is left open when this
method returns.
Parameters:
in - the input stream containing the class bytecodes
Returns:
a set of the names of the classes referred to by the class
bytecodes
Throws:
IOException - if a I/O failure occurs while reading the class
bytecodes