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Anyone done SCJP 1.4 Beta , please comment~ :)

sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Hello,
I know there are some people who have done SCJP1.4
out there.
Please post some comments on it.
Thanks heaps


Sean <br />SCJP2, SCJP2p1.4, SCWCD
Joshua White
Ranch Hand

Joined: Jun 04, 2001
Posts: 97
Bummer,
Everyone must be waiting until the 17th to take the beta exam. I was hoping to get some feedback as well.
Engin Okucu
Ranch Hand

Joined: Feb 09, 2002
Posts: 174
Hi everybody,

I was wondered why i had not received a response for the certification beta 1.4. Will everybody register for these exam of the number is limited ?
i did my registration yesterday.If somebody receive a response can he signal it?.....

Thanks.
Younes Essouabni
Ranch Hand

Joined: Jan 13, 2002
Posts: 479
Originally posted by Joshua White:
Bummer,
Everyone must be waiting until the 17th to take the beta exam. I was hoping to get some feedback as well.

The 17 th is the last day to take the exam, you can take it tomorrow if you have the voucher. I take it thursday!


Younes
By constantly trying one ends up succeeding. Thus: the more one fails the more one has a chance to succeed.
Younes Essouabni
Ranch Hand

Joined: Jan 13, 2002
Posts: 479
Quel tueur gratteur!
Hi Engin, sorry but it seems like there is no more voucher available! How many times did you subscribe? For me it tooks two times!
Joshua White
Ranch Hand

Joined: Jun 04, 2001
Posts: 97
Younes,
I am sure there will be many people interested in your impressions of the exam. Good Luck!
vinita Kh
Ranch Hand

Joined: Feb 19, 2002
Posts: 49
Hi guys,
I have registered for beta test for 17th May, its not too late
I would be interested in comments from all those who take it before.
Regards,
Vinita
Nazmul Huda Sarkar
Ranch Hand

Joined: Feb 01, 2002
Posts: 317
I also got a voucher for the beta test....but as I can't manage time I returned it to SUN


Nazmul<br />SCJP,SCWCD,IBM OOAD with UML
Younes Essouabni
Ranch Hand

Joined: Jan 13, 2002
Posts: 479
Unfortunately, I'm moving this week so I won't have much time for java, I have delayed the exam until 17 th May, Sorry :roll:
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Geee..
everyone is scheduled to have the test on 17th of May... so do I..
Please someone post some comments if you have done the test......
James Childers
Greenhorn

Joined: Jan 07, 2002
Posts: 9
I took the 1.4 beta exam earlier this week. It was very long (161 questions), but worth it. My most favorable impression was that they dropped the AWT ojbectives. Threading was heavily covered, and questions about the other objectives from the previous exam are of course still there. There were a few questions about assertions -- specifically about their purpose -- but not as many as I expected.
In short, I am happier with this test than with the previous one because the new one is more focused upon the Java language, instead of worrying about libraries that many of us will never use.
-= James


"The enemy is never the enemy in his own eyes." - Sun Tzu
Rob Ross
Bartender

Joined: Jan 07, 2002
Posts: 2205
James, are there any questions about new io? (nio)?
What about the new APIs for various language and utility classes, like the CharSequence interface, LinkedHashMap and LinkedHashSet, and StackTraceElement classes etc. Or new methods in various classes like Thread.holdsLock(), or the assertion-related methods in ClassLoader, etc?
Thanks.


Rob
SCJP 1.4
Jaffery Rab
Ranch Hand

Joined: Jan 18, 2002
Posts: 36
hi
I am living in Detroit MI and wants to appear in beta test can anybody tell me where do I got regestered myself (web link) or the if it is possible by telephone.
Thanks,
Jaffery
Ravi Naidu
Ranch Hand

Joined: Apr 23, 2001
Posts: 43
Sorry ...seems it is too late now.
From the other postings on the site and on checking the sun site it seems registration has closed or Sun has enough candidates for the BEta test now.
Greg Harris
Ranch Hand

Joined: Apr 12, 2001
Posts: 1012
i am taking the test saturday the 11th. however, i am leaving town on sunday, so i will try to post a review before i go on vacation.


what?
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Thanks Greg.
I am pretty sure there are many people who are
waiting for your input on 11th...
Good luck with your exam
Steven Wong
Ranch Hand

Joined: Mar 07, 2002
Posts: 295
I took the beta-exam yesterday. There were around 5 questions on assertion and one question on the new classes in java.util.
I can't comment on the difficulty level between the 1.2 and 1.4, as I'll only be taking the 1.2 exam end of the month.
Well, if it were to be compared with Marcus Green mocks, the exam is slightly harder.
Clement


best regards,<br />Steven<br />SCJP, SCEA
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Thanks Clement for your comment..
I wonder if beta test will have ALL the questions
that will ever come up in the SCJP1.4 ..
meaning beta testers all have the same questions...
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Hi all,
Did they have anything on Regular expression?
thanks
Sean
Bob Reardon
Ranch Hand

Joined: Jun 01, 2000
Posts: 160
Does anyone know when Sun will drop the current exam (1.2) and start using the new exam (1.4)?
Mike Kelly
Ranch Hand

Joined: Jul 18, 2001
Posts: 78
Originally posted by Bob Reardon:
Does anyone know when Sun will drop the current exam (1.2) and start using the new exam (1.4)?


I heard here, that it was going to be discontinued sometime this summer.
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Hello all,
For anyone who has done it,
Is there going to be more questoins on Collections Frame work?
What kind of Questions were there regarding
Wrapper classes and assertion ?

Thanks
Sean
Greg Harris
Ranch Hand

Joined: Apr 12, 2001
Posts: 1012
Originally posted by sean cee:
Thanks Greg.
I am pretty sure there are many people who are
waiting for your input on 11th...
Good luck with your exam

well, i have to go out of town sooner than i thought... i am not going to be able to take the exam i was not ready for it, but it was FREE, so i was looking forward to it.
oh well, maybe someone who is ready for it will get my spot.
Mark Spritzler
ranger
Sheriff

Joined: Feb 05, 2001
Posts: 17257
    
    6

I am taking the exam tomorrow the 11th also. While studying for this one, I am using the RHE book that I bought when doing the SCJD. So this is my first time through. I am finding the the RHE is very well written, and it clearsed up so much that I was confused at before. I wish I had read it when I too SCJP over a year ago. I would have scored much better.
But I have a chance to make that up with the 1.4 beta. I like not having to worry about IO or AWT. Even though I understand it a lot better than last year.
Mark


Perfect World Programming, LLC - Two Laptop Bag - Tube Organizer
How to Ask Questions the Smart Way FAQ
Sayed Ibrahim Hashimi
Ranch Hand

Joined: May 17, 2001
Posts: 148
I like not having to worry about IO...
I have yet to hear about this can you explain exactly what we will not have to know...for example will there be questions about the File class?
Thanks.


SCJP 1.4<br /><a href="http://www.cise.ufl.edu/~sih" target="_blank" rel="nofollow">www.cise.ufl.edu/~sih</a>
Mark Spritzler
ranger
Sheriff

Joined: Feb 05, 2001
Posts: 17257
    
    6

No IO whatsoever, so the File class is IO. Therefore no File class.
Mark
vinita Kh
Ranch Hand

Joined: Feb 19, 2002
Posts: 49
can nebody throw some light on questions we can expect in assertions.
i have read the material from Sun , now i want to get an idea of questions that can be expected on this topic
Regards,
Vinita
Mark Spritzler
ranger
Sheriff

Joined: Feb 05, 2001
Posts: 17257
    
    6

the assert questions I had related to what is good form. Meaning asserts are good to help document code, so having comments on the same line is not good form.
Plus make sure that you know the first part of the assert command must return a true or false, and should not change any values on the line.
like
assert MyClass.aMethod()=12.
This calls a method and is bad form. Try
int returnValue = MyClass.aMethod();
assert returnValue == 12 : "Wrong Return Value"
also know that the second part of assert needs to have a value. For instance if you have
assert returnValue == 12 : bMethod()
and bMethod returns void. This is wrong.
Hope that helps
Mark
vinita Kh
Ranch Hand

Joined: Feb 19, 2002
Posts: 49
Thanks Mark!
similary can u comment on the questions we can expect on hashcode method.'
I didn't find questions on this in any mock exam as well.
Can nebody point me to a good resource for hashcode.
Jose Botella
Ranch Hand

Joined: Jul 03, 2001
Posts: 2120
Creating key classes from Thinking in Java by Bruce Eckel has examples.
Also Effective Java Programming Language Guide by Joshua Bloch.
And of course:
The API
[ May 12, 2002: Message edited by: Jose Botella ]

SCJP2. Please Indent your code using UBB Code
Mark Spritzler
ranger
Sheriff

Joined: Feb 05, 2001
Posts: 17257
    
    6

vinita - It was basically about which one proves that objects are equal. Meaning if the object.equals() to another object does that mean that the hashcodes will be the same, or the other way around.
I believe if the hashcodes are the same then the objects must be the same. Am I right?
Mark
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
Hi Mark,
Thanks for your useful info.
What type of questions were there regarding
Collections Framework and Wrapper Classes?
Thanks in advance
vinita Kh
Ranch Hand

Joined: Feb 19, 2002
Posts: 49
Mark- I believe that
if o1.equals(o2), then it ensures that o1.hashCode()==o2.hashCode
, but i'm not sure of the other way around.
can nebody comment
sean cee
Ranch Hand

Joined: Oct 24, 2000
Posts: 115
vinita,
I don't think that is the case.
just because o1.equals(o2) is true, it doesn't mean that o1.hashCode() == o2.hashCode() is true.
Because with hashed data structure, there is usually "external chaining" happening when looking up an element and this happens when hashCode() return an index that points to "array of elements" which in turn is searched through using equals(..).
anyone please correct me if I am wrong.
Sean
Steven Wong
Ranch Hand

Joined: Mar 07, 2002
Posts: 295
Hi,
The following is extracted out from the Java API for hashcode. Hope that will give you the answers.

The general contract of hashCode is:
If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results.
However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables.

Clement
vinita Kh
Ranch Hand

Joined: Feb 19, 2002
Posts: 49
exactly Clement!
that means wat i said is true, right?
plz comment if i'm wrong
Steven Wong
Ranch Hand

Joined: Mar 07, 2002
Posts: 295
Hi,
It means that if the objects are unequal, they don't have to product distinct integer results.
Check out this thread.
http://www.coderanch.com/t/197517/java-programmer-SCJP/certification/hashCode-method-pls-help
Clement
vinita Kh
Ranch Hand

Joined: Feb 19, 2002
Posts: 49
so we can sum up as:
"if o1.equals(o2) ---> true then
o1.hashCode() == o2.hashCode() -----> always return true"
"if o1.equals(o2) ---> false then
o1.hashCode() == o2.hashCode() -----> May be true or false"
Jenn Green
Greenhorn

Joined: Nov 26, 2000
Posts: 28
Hey,
I wrote the java beta test on last Thursday... all in all, it seemed a little easier than the 1.2 exam.. I'm not sure if that's because when I wrote the orginal exam I had little programming experience and now I have about 1.5 years? That might make the difference.
Anyway, not a bad exam. Some stuff on assertions, but mostly relating to good programming practice. No IO or AWT!!! Unbelievable. I did feel that they beat garbage collection to death with very long code examples, and a lot of theory questions. The new collections stuff is nothing to worry about, there didn't seem to be any emphasis on these questions. Seemed to be less on casting and converting than I originally remembered on the first exam too. And of course, the regular run of the mill string immutablity-type questions.
Good luck to everyone still to write... now I have to wait 8 weeks for the results!
JG
Syed AliRaza Zaidi
Ranch Hand

Joined: May 12, 2002
Posts: 169
I am giving Sun Beta on 16th can some one tell me how to prepare i left java after SCJP bcz of my exams for 3 months but still very good at it.tell me some easy way to prepare 100% in two days.
 
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subject: Anyone done SCJP 1.4 Beta , please comment~ :)