Self Test With Answers

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1) Which of the following would likely be the simplest in nature?

a) Visual GUI JavaBean
b) JSP Data Bean
c) JSP Session Bean
d) Enterprise JavaBean     ( b or c )


// If the session bean was a simple algorithm, for instance returning
// the time it might be simplest. The point is that both EJB and Visual
// JavaBeans are more complex expressions of the beans metaphor.


2) True or False? Simple properties that use boolean types must us the
'is' prefix in it's getter method.  True / False    ( False )

// It is just an option get and set methods can be used to return boolean.

3) Which of the following is not a property type specified by the JavaBean
    specification.

a) simple
b) indexed
c) bound
d) inhibited                                                            ( d )

4)  Which of the following useBean attributes represents a little used
      alternative way to reference a JavaBean instance into a Java page.

a) id
b) scope
c) beanName
d) type                                                                        ( c )

5) Which of the following is not a legal id identifier.
     (Note: there are more than one answer)

a ) bill
b) inner$
c) _ref
d) x2345_12D                                              ( b and c )

// Comment: id identifiers must start with a letter. Subsequent
// characters must be letters, numbers or underscores.

6) True or False? The body of useBean tag has characteristics
     roughly analogous to a Java class constructor.    ( True )

// Comment: True. This zone is read once and is useful for
//  initialization like a constructor