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Abhishek Misra

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Recent posts by Abhishek Misra

Have been delaying it for god knows how long. Planned on taking it in 2005 when i was at Sun and Java 5 was brand new. Since then work and then family kept me preoccupied. Finally just decided to go ahead and give it. This time i didn't get to revise my mock exams (enthuware) didn't get to read up On K&B and just banked on whatever i had read a year back. Anyways i passed with 86%. The exam seemed to be difficult while i was giving it but it was a satisfactory score not what i would have been proud of but its good enough.

Some pointers for the fellow brethren here:

1.) Generics............know what can be passed to a function and assigned in terms of generics. Specially understand the concept clearly of Polymorphism. Passing in polymorphic types to a function ( without ? extends ClassName) etc. What if uses extends syntax. You need to know that before you give your exam.

2) Huge amount of Drag and Drop questions, which is kind of good.

3) Thread synchronization. Know the difference between Object function calls like wait etc and Thread functions.

4) Know how to chain File I/O classes.

5) Don't go back to a drag and drop question because it resets your answer.

6) I did not do to well on OOAD concepts (70%) which is a shame because that is my bread and butter and i seemed to know it very well. Watch out for some trick stuff there. I would say prepare this section the best because people generally tend to ignore it thinking its easy.

7) Static's watch out for stuff like polymorphic calls to static member variables, like casting a object reference and then accessing some static variable using the casted reference. Practice it at home.

That's all i can remember for now.
If you need any other pointers i will be glad to help.

Oh remembered some other stuff. Read up on System class API. getProperty, getProperties, getenv specifically. what they do how to retrieve etc

[ May 13, 2007: Message edited by: Abhishek Misra ]
[ May 13, 2007: Message edited by: Abhishek Misra ]
13 years ago
enthuware is good......very good. No training as such but the tests are worth it. Whizlabs training for scjp 1.5 is very new and i have not used it so won't be sure if it is worth it. there mock tests are good though.
[ February 01, 2007: Message edited by: Abhishek Misra ]
I am not complaining about Ruby being weak. It's just my personal experience in the industry that a technology doesn't get popular enough unless and untill it is widely adopted by the industry. There are hobbyists and people like us who love new better technologies like Ruby on Rails ( a language, a complete framework) but it won't be accepted a universal platform for web programming unless and until you do a monster search for ruby or rails and see a 1000 hits. There must be something pulling this thing from hitting a chord with the industry.

On second thoughts i am going to be buying this book to read how it makes a difference to a java developers life.
13 years ago
I don't know if Ruby on Rails would ever be a viable option against J2EE or .net. I have worked and played around it for some time now, but i still doubt its sturdy enough. First and foremost the platform doesn't have a really nice server to start with. I was looking for some good rails based websites which can handle multi million transactions, but the only ones which really use it in production seem to be the creators. Anyways what do the geniuses here think? is industry ever going to look at Ruby on Rails as an option? What do people think about Java on sails?
13 years ago
It seems like what we needed was a LGPL rather then a GPL to make java really the defacto choice and compete. If it would have been LGPL'ed we could have stripped out stuff we didn't need from JRE and made our product compact. It doesn't make sense for many to use java for downloadable apps as JRE is freaking insanely huge.
14 years ago
Paulo it does mean that your app be open sourced. But it is not that bad. They have added the classpath exception to the license which will allow to link with jre without opensourcing your product.

This is from FAQ section of Sun java website

The Classpath exception was developed by the Free Software Foundation's GNU/Classpath Project (see http://www.gnu.org/software/classpath/license.html). It allows you to link an application available under any license to a library that is part of software licensed under GPL v2, without that application being subject to the GPL's requirement to be itself offered to the public under the GPL.

Back to top

Q:
Why do you need the Classpath exception?
A:
If an application is distributed with an implementation of Java such as the JDK under GPL v2, that application could be subject to the requirements of the GPL that all code that is shipped as part of a �work based on the [GPL] program� also be GPL licensed. Accordingly, a GPL license exception is needed that specifically excludes from this licensing requirement any application that links to the GPL implementation. The Classpath exception accomplishes this. Without the Classpath exception, a Java SE implementation licensed under GPL v2 could not practically be distributed with non-GPL licensed Java applications. This could present a serious barrier to adoption, for example by OpenSolaris or GNU/Linux distributions if left unaddressed.
[ November 13, 2006: Message edited by: Abhishek Misra ]
14 years ago
Read this specifically :
"You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License."

GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

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a notice placed by the copyright holder saying it may be distributed
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means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
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is covered only if its contents constitute a work based on the
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14 years ago
It is finally done. Sun choose the most restrictive of all licenses. I see it as a step back rather the step forward. To appease the open source community Sun is risking the industry support which Java has. Most of the people as they know GPL are really hesitant to use Java anymore because of the fine prints in GPL of making your product open source as well.

Before people panic. Sun has releade GPL + classpath which is close to LGPL so not that bad. I would still have preferred LGPL.

" The Classpath exception was developed by the Free Software Foundation's GNU/Classpath Project (see http://www.gnu.org/software/classpath/license.html). It allows you to link an application available under any license to a library that is part of software licensed under GPL v2, without that application being subject to the GPL's requirement to be itself offered to the public under the GPL.

Back to top

Q:
Why do you need the Classpath exception?
A:
If an application is distributed with an implementation of Java such as the JDK under GPL v2, that application could be subject to the requirements of the GPL that all code that is shipped as part of a �work based on the [GPL] program� also be GPL licensed. Accordingly, a GPL license exception is needed that specifically excludes from this licensing requirement any application that links to the GPL implementation. The Classpath exception accomplishes this. Without the Classpath exception, a Java SE implementation licensed under GPL v2 could not practically be distributed with non-GPL licensed Java applications. This could present a serious barrier to adoption, for example by OpenSolaris or GNU/Linux distributions if left unaddressed. "

[ November 13, 2006: Message edited by: Abhishek Misra ]
[ November 14, 2006: Message edited by: Abhishek Misra ]
14 years ago
Awesome. Congrats!!!. May be time to look the microsotf way and get MCSD MCSE etc.
14 years ago
Sweet!!! Matt if you plan on making it community driven may be go the open source way and post you stuff on sourceforge. This is a nicely done UI though commendable work.
I tried to look up on prometric and schedule my exam in California but to my utter disbelief they don't have centers in bay area which offer the exams on weekends. What does prometric and Sun expect from people who are working ?? to take a day off. its disappointing.
Go ahead you can do it.There is always an option to retake later if things don't work out. BUt for now go ahead and ace it.
I bought it in USA and is valid here. I am not sure if it is valid worldwide. I will send a mail to u guys,

Thanks,
Abhi
[ June 28, 2006: Message edited by: Abhishek Misra ]