Mathavan Balakrishnan

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since Nov 10, 2005
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Recent posts by Mathavan Balakrishnan

Hi friends
I want to know how to get the system date and time.
Can u tell me the method and class used for that ?
Waiting for ur reply.
13 years ago
Hi friends

I want to know what is the actual use of interfaces in java.

I know that interfaces have methods that are not implemented.

Why do we use a thing that doesn't have any implementation ?

Can't we accomplish our task without interfaces ?

What is the speciality of interfaces ?

What interfaces can do that classes can't do ?

Can u please illustrate the use of interfaces with examples ?

Waiting for ur reply friends.

urs
Mathavan
13 years ago
Hi friend
There is a good mock exam available for SCJP 5.0 at the link :
http://www.examulator.com/phezam/login.php

There is also an ebook available for SCJP 5.0 at :
http://java.boot.by/scjp-tiger/

God is great. Friendship is double great.
Mathavan
SCJP 1.4
SCWCD (preparing)
Hi Friends,
We can purchase the exam voucher from any prometric centres in India. RCS is not the only prometric centre - There are totally 124 prometric centres in India. There are 17 prometric centres in Bangalore and 11 prometric centres in Hyderabad.

You can find the details of all the prometric centres at the link :
http://www.register.prometric.com/Centers.asp

God is great. Friendship is double great.
Mathavan
SCJP1.4
SCWCD (preparing)
Hi Swapna,
Following are the constraints of the instanceof operator :
1.The operands must be a reference variable(LHS) and a class name(RHS).
2.The reference variable must be related to the class name in some way, that is, they should be inside the same inheritance hierarchy.

If any of the above conditions is not satisfied, you get a compiler error.

Note : LHS - Left hand side of instanceof operator
RHS - Reft hand side of instanceof operator

Following is my definition for instance operator :
"The instanceof operator returns true if the reference variable in the LHS is an object of the class name in RHS or an object of a subclass of that class name"

You get the compile error in your program due to the failure of the condition no.2 - that is, the classes foo and bar were not related to each other.

God is great. Friendship is double great.
Mathavan
SCJP 1.4
SCWCD (preparing)
Hello friend,
In SCJP 1.4, there won't be any question regarding unreachable code. I am not sure about the SCJP 5.0 exam.
I finished the 1.4 exam last month and there were no questions on that. Further, i took some mock exams and didn't find any questions on unreachable code.

God is great. Friendship is double great.
Mathavan
SCJP 1.4
SCWCD (preparing)
Hi
My Best wishes for your success in the exam.
Be relaxed in the exam hall and do the best.

ALL THE BEST
God is great. Friendship is double great.

Mathavan
SCJP 1.4
SCWCD (preparing)
Hi samala,
I wrote the SCJP exam in bangalore. Totally there are 124 prometric centres in india. There are 17 prometric centers in Bangalore.
I wrote at RCS Prometric centre which is in Brigade Road in Bangalore.
Its a nice and peaceful place to write the exam. The exam fees is Rs.7200.
Following is the details :

R.C.S. EDUCATION PVT LTD
127, 4TH FLOOR,
ANCHORAGE COURT,
OPP BRIGADE TOWERS,
BRIGADE ROAD,
BANGALORE, Karnataka - 560025
Phone: 080-25361911
Site Code: IIF16

U can find the details of all other prometric centres in the link :
http://www.register.prometric.com/Centers.asp?Page=1

Mathavan
SCJP 1.4
[ July 04, 2008: Message edited by: Mathavan Balakrishnan ]
Hi Hema,
Time won't be a constraint in the exam (in most of the cases). The exam duration is actually more than we need. You will finish the exam 15 minutes earlier (assuming you don't think toooooo much on a single question).

The exam duration is 2 hours and there are 61 questions - ok,if you now use an intelligent calculator, it will say "2 minutes can be taken for each question"

The questions will be easy and don't require us to think deeply.
But don't be relaxed - you should be ready to face any rare tough questions.
Study the K&B book thoroughly as you can expect many questions from that book (or atleast similar pattern of questions)

The exam software is very user-friendly. The concept of marking & unmarking is very simple. While reviewing you CAN go back to all the questions. The marking of questions is to highlight some questions among the whole set.

If you have doubts on some questions and like to come back again at the end then just mark those questions - so that you don't have to search for the doubtful questions. Then there is no need of unmarking the questions.

It seems you are having lot of books for preparation. Its better to study a single book completely than to study more books partially. That single book is none other than K&B.

God is great. Friendship is double great.
Mathavan
SCJP 1.4
SCWCD (preparing)
Hi RajaSekhar & Steve,
Thanks for your comments & compliments on my writing.

God is great. Friendship is double great.
Mathavan
SCJP1.4
SCWCD (under construction)
Hi
U don't need any practical experience. To be an SCJP, u must be knowing core java concepts very well. The syllabus of SCJP doesn't include JSP or Javascript (It never happens bcoz Javascript is not a Sun product).
The SCWCD exam is for J2EE - so it includes JSP. (u should be an SCJP to write the SCWCD exam)
For SCJP 1.4 exam, there are 9 cool chapters in the syllabus.

(i told "9 cool chapters" bcoz i studied the K&B book)

U can prepare SCJP in 6 weeks - first 2 weeks for studying basic java book, next 3 weeks for studying certification book and last 1 week for revision & mock exams. (sounds simple or not ?)

Having SCJP certification is a plus point for anyone hunting for jobs (especially in india). U will receive a sun logo indicating that u r an SCJP (ofcourse after passing the exam) and u can have that logo printed at the top ur resume - that will definitely attract the recruiters.

For preparation, u definitely need the so called "K&B book" - K for Kathy Sierra & B for Bert Bates. There are many certification books available for the SCJP 1.4 exam in the market. There has never been an argument like "Which is the best book ?". But there might be an argument like "Which is the second best book ?". Bcoz everybody (even a newly born baby) knows K&B book is the best for SCJP.

I finished SCJP last month and got 86% marks (truly bcoz of the K&B book). I just prepared for 1 month for the exam bcoz i planned to have the exam quick. If i had prepared for more days, i would have probably got 100% marks (thats the greatness of the K&B book).

With SCJP, getting marks is not so important (ur mark is not shown in the certificate) - its a matter of how much u learn and gain knowledge from it.

Mathavan
SCJP 1.4
SCWCD (preparing)
God is great. Friendship is double great.
Hi Palu sing,
Since you have 1 year experience in Java, its easy for you to be an SCJP.
I suggest you to first study the reference books and go for certification book. If you do that, it will be easy for you.

Regarding SCJP, getting marks is not so important - its a matter of how much you learn and how much you gain knowledge from it.
(your mark is NOT shown in the certificate)

Try to work out programs. Write your own programs - even if you know that it will have errors, just try it and see what & why are the errors so that you can correct it.

Mathavan
SCJP 1.4
[ July 04, 2008: Message edited by: Mathavan Balakrishnan ]
Dear Kathy & Bert,
I am Mathavan Balakrishnan.
I have sent u an important e-mail (with the subject "sorry") to ur ids :

bert.bates@wickedlysmart.com
kathy@wickedlysmart.com

Plz read that and reply me.
Waiting for ur reply,
Mathavan Balakrishnan
SCJP 1.4
Hi Sunitha,
U should not go for the exam with panic. Plz read every page from K&B book. That book is great for the preparation. Don't go for the exam without completing that book. Take your own time.

If time is a problem for u, there is an option for changing the proposed exam date.

The mock exams given at the K&B book is enough for u. U don't have to try any other mock exams (if u read every page from K&B book).

I finished the SCJP 1.4 exam last month and got 86% marks.
I just studied the K&B book (nothing else) for 1 month and succeeded with ease.

If u have any doubt, mail me at : mathavanwithu@yahoo.com

Regards,
Mathavan
SCJP 1.4
Hi Swapna,
I finished the SCJP 1.4 exam last month and got 86% marks. I am now preparing for SCWCD 1.4 exam. My strong advice for you is to take the 1.4 exam instead of 1.5 exam. i am NOT discouraging you. its a matter of being wise.

U might think that taking the latest version is good (i also thought in that way at first). But having the certification is more important than to think about the versions. There is no real good book available for 1.5 exam. The syllabus for the 1.5 exam is huge when compared to 1.4 exam. Further the exam pattern is somewhat new and strange to many people - you can't find any good mock exam from the net.

I don't know with what intention you are taking the SCJP.
If you intend to search for jobs having the certification as an highlighting point, then its wise to go for 1.4 exam.
Or if there is a company which compulsarily requires people with SCJP 5.0 certification, then go for 5.0 exam.

The arrival of JDK-5.0 does not mean that JDK-1.4 is old or out-of-date. JDK-1.4 has been used in many companies and professionals. There is an estimate which shows that usage of JDK-1.4 is more than JDK-5.0.

After finishing SCJP 1.4, if you decide to have an SCJP 1.5 certification in the future, then there is an "upgrade exam" available for you to have the SCJP 1.5 certification. The cost of the upgrade exam is low.

For preparing SCJP 1.4, the book written by Kathy Sierra & Bert Bates is great. That book is truly amazing. After reading that book, you will have 100% confidence (and 100% mark is possible too).

The mock exam given at the end of each chapter in that book almost resembles the real exam question. I didn't try any other mock exams for preparation - i just studied the Kathy sierra & Bert Bates book for 1 month and got 86% marks with ease.

- Mathavan
[ July 04, 2008: Message edited by: Mathavan Balakrishnan ]