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Is this incorrect? bad question

Stephen Davies
Ranch Hand

Joined: Jul 23, 2008
Posts: 352
Q4)
Which of the following statement(s) are not true about JavaBeans?

* a) JavaBeans implements java.io.serializable interface.
* b) JavaBeans provides no argument constructor.
* c) JavaBeans provides getter and setter method for accessing its properties.
* d) JavaBeans class can contain public instance variable.
* e) None of the above

My answer: b,c?
Their answer: a,d


be a well encapsulated person, don't expose your privates, unless you public void getWife()!
Jeffry Kristianto Yanuar
Ranch Hand

Joined: Oct 01, 2007
Posts: 759
Of course their answer is true. JavaBeans cannot has public instance variable, they must be encapsulated. and JavaBeans doesn't implements java.io.Serializable. It is SCJP question isn't it?

Jeffry Kristianto Yanuar
SCJP 5.0
SCJA
SCJD (Working on UrlyBird 1.3.2)
Sybyll Jones
Greenhorn

Joined: Dec 20, 2007
Posts: 14
But here is written, that javabeans implements this interface:

http://www.stardeveloper.com/articles/display.html?article=2001071901&page=1

? I am confused, too

Sybyll
Oscar Hansen
Greenhorn

Joined: Jul 09, 2008
Posts: 10
I am confused too. There got to be some reason behind it. Either the question is not put in correctly or the answer to the question is misleading. Need some experienced input here .... Anybody???
[ August 06, 2008: Message edited by: Asif ]
Jimmy Clark
Ranch Hand

Joined: Apr 16, 2008
Posts: 2187
http://java.sun.com/docs/books/tutorial/javabeans/whatis/index.html

Read the section describing persistence to learn more.

Enjoy!
Stephen Davies
Ranch Hand

Joined: Jul 23, 2008
Posts: 352
java.io.Serializable. It is SCJP question isn't it?

Actually this was from a SCJA mock exam site
Stephen Davies
Ranch Hand

Joined: Jul 23, 2008
Posts: 352
Originally posted by James Clark:
http://java.sun.com/docs/books/tutorial/javabeans/whatis/index.html

Read the section describing persistence to learn more.

Enjoy!


..Which confirms that JavaBeans implements the java.io.serializable interface,
so the set answer is worng as by selecting it they suggest that JavaBeans do not implement the serialieable interface!
Jimmy Clark
Ranch Hand

Joined: Apr 16, 2008
Posts: 2187
...and also confirms that any non-Sun Microsystems technical documentation or "mock exam site" may contain incorrect information.

Mock at your own risk
 
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subject: Is this incorrect? bad question