- (id)initWithName:(NSString *)_name 
               age:(NSNumber *)_age 
            gender:(Gender)_gender 
           classes:(NSArray *)_classes
   numberOfCredits:(NSNumber *)_numberOfCredits
             major:(NSString *)_major
{
   if ((self = [super init])) {
      name = _name;
      age = _age;
      gender = _gender;
      classes = _classes;
      numberOfCredits = _numberOfCredits;
      major = _major;
   }
   return self;
}
