ritwik roy

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since May 13, 2005
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Recent posts by ritwik roy

hi

i have some specific questions on marker interfaces

1.Though there are no methods in marker interfaces like java.io.Serializable , how the serialization will be done?

2.The relevent clone() method could have been moved out of the Object class into the relevent Cloneable interface - and thus the Cloneable interface would no longer be marker interface. But it is not done ,why?

Thanks
Ritwik
16 years ago
hi friends
this is a going to be a very tough task for me. i will have to print an image with its description in text from a j2me application...
i m using Nokia 6681 and a hp bluetooth printer...plz help..
17 years ago
hello friends
do u know how to print a file(image/text) from a j2me application using an external printer...i m using cldc1.0 and midp2.0
plz help...
ritwik
17 years ago
hi friends
do u know any api which can be used to print a form (text/image) from a j2me application....I am using MIDP2.0 and CDLC1.0
if u know any technique to use an external printer form a j2me application, plz send it...
thanking u all
ritwik
17 years ago
hi all
i have passed my scjp1.4 last month with 88% and started preparing for the developer exam. i don't have any real life software development experience.. all i did were simple java projects in my college days....
i am about to enter this new world of development....plz give some sort of guidence aboout how to start... it will also be helpful for many other young fresh developers like me........
i have also the same question
When can i expect SCJD Exam with J2SE 5, Second Edition this book in indian market?
ritwik
i am a B.tech(CS) and having 5 months of experience in a Software company at kolkata. Our company is mainly a product development company, but unfortunately i have been assigned to a project which has very little scope of technological growth.
I have passed SCJP1.4 with 88% and have good knowledge on java related technologies. I always want to do some technological jobs but my present project mainly needs managerial jobs like giving training to the clients..., and it will continue for the next 2-3 years..
Actually i never tried any other options as i was campus selected on this company.
Should i change my company??? if u have any requirements plz contact me
ritchi_4_u@yahoo.co.in
17 years ago
hi all
tank you very much K&B for such a wondurful creation. I passed my scjp1.4 last saturday with 88%. I am from Kolkata, India.
I would also like to thanks
1.Java Quick references ( http://www.janeg.ca/scjp/tips.html)
2.Marcus Green's mock exam
3.Dan Chisholm's Mock Exam (Single Topic)
finally K&B
Now one single question, my project manager is telling me to do the Sun Certification on Solaris.. I am a fresher and I don't know much about it.
So plz help me by giving some sort of guidence.( K&B can you hear me !!!)
Ritwik
17 years ago
thanks Naresh!
i m preparing for scjp1.4 ,but i have been using jdk1.5 for the last 2 months. now my question is that suppose in the real exam(scjp1.4) i face such type of problem, then what should i do. go for the compiler error option.....or utilize this type of latest technology.....
what r the other things which i have not got any error in jdk1.5 but will get if i use jdk1.4..
if u know some points, plz send me..
hi!Aurelio
what is this auto-boxing and auto-unboxing. It is applicable to all wrapper Objects and primitives or in some particular cases???
plz send some related links......
hi all
Byte is a wrapper object, not a primitive. But in the code given below if we
try to catch that wrapper object with the primitive 'int', then there will not be any error. why!!!
class C1
{
int m1()
{
Byte b=7;
return b;
}

public static void main(String arg[])
{
C1 c=new C1();
int p=c.m1();
System.out.println(p);
}
}
thanks Steve and sherry.
My doubt is cleared. But why then in java API the start() method has not
been declared final??
we know final method can't be overriden and in this type of case we must not override the start() method, so it should have been declared final.
what do u think???
hai all
i have a doubt regarding the start() method of Thread class. start() implicitly calls the run() method of that class. o.k
but what is the problem if i override the start().
why in my follwing code after completing the start method in PrintNumThread
class the control fails to go to the run() method ???
plz clarify.
ritwik


class TestThread
{
public static void main(String arg[])
{
PrintNumThread pnt=new PrintNumThread();
pnt.start();
}
}
class PrintNumThread extends Thread
{
public void start()
{
System.out.println("PrintNumThread Started");

}
public void run()
{
for(int i=0;i<5;i++)
{
System.out.println(i);
}

}
}
hai vneeth
plz clarify this doubt.

class A{
final int a=10; //1
int b=20; //2
}
so the variable a is initialized at compile time, but the variable b will be initialized at run time???

if b is initialized at compile time then there should not be any compile time error in the following code. But there is a compile time error in this code.......

class TypeConversion
{
public byte getNumber()
{
int b=20 ;
return b ; //this will causes compile error
}
}
hai Ramdas
i have tried your your first code (return txt in finally block), but i have not got any compile time or run time error/warning . It is working perfectly.
I am using jdk 1.5 in Windows 2000 professional.
this is ritwik here.
Please let me know if any one from kolkata is planning for SCJP4.0.
Please keep in touch so that we can interact with each other.
i am in InterraIT and my mail address is ritchi54@rediffmail.com