sachin kumar Kansal

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since Mar 25, 2001
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Recent posts by sachin kumar Kansal

hi ,
i was trying Oracle's Flash back query option,
but it is not working ... may be i am not going in right direction
could any one let me know the steps for it.
thanks in advance
17 years ago
hi Grishma !
probable anwsers are
1. a
2. a
3. d
4. a in case data is more
b in case data is less
i hope they r correct
17 years ago
hi !
u do not explicitly store passwords in Oracle using table.
they are encrypted by oracle and that's what security is all about.
how ever u can see the details of user account from
dba_uers table.
SQL> desc dba_users
Name Null? Type
------------------------------- -------- ----
USERNAME NOT NULL VARCHAR2(30)
USER_ID NOT NULL NUMBER
PASSWORD VARCHAR2(30)
ACCOUNT_STATUS NOT NULL VARCHAR2(32)
LOCK_DATE DATE
EXPIRY_DATE DATE
DEFAULT_TABLESPACE NOT NULL VARCHAR2(30)
TEMPORARY_TABLESPACE NOT NULL VARCHAR2(30)
CREATED NOT NULL DATE
PROFILE NOT NULL VARCHAR2(30)
INITIAL_RSRC_CONSUMER_GROUP VARCHAR2(30)
EXTERNAL_NAME VARCHAR2(4000)
17 years ago
hi !
what i think is that u r missing or applying more brackets ().
count them and close all.
cover the quries with in bracket and then apply UNION
in the last query i think u have put in extra bracket.
bye
sachin
17 years ago
96%
Great score !!!
keep it up
regards
sachin
20 years ago
hi to all !!
i have done core java and now doing adv technologies of java
Servlets,EJB,JSP,RMI.
i have a big confusion.
i have heard abt
Web Logic , TomCat , Java Web Server , J2EE , Apache Web Server
but i am really confused where they are used - could any one please let me know about them -- what they are , for what purpose they are used ?
for EJB , JSP ,Servlets what is reqiured from above or can any one of them can do same thing ?
i have also heard that Java Web Server is being depreceated by Sun
and officially it will be annonced in July 2001
post u r replies - pl
regards
sachin kumar

20 years ago
hi to all !!!
i am apperaing for my first online exam in life.
i have completed all the objectives listed by SUN,
BUT i am feeling nervous in I/O and bit shifting.
if some of all can help me i will be thankable to them.
i am getting around 70 - 80 % in JWHIZ mock
61 - 65 % in JQ+ and finding Exam Cram book final exam
to be very easy -- but still i am nervous
can any one tell me wether Q do come FROM JQ+ ???
waiting for reply
sachin

------------------
Hi
my self sachin .
i am preparing for SCJP and shedule to give on 18 june
There is a big confusion :
Questions in SCJP are tested on JDK 1.2 or JDK 1.3 ???
as i have JDK 1.3 and there is ambiguity with JDK 1.2
for example
void test (byte x)
{
switch (x)
{
case 'a' : // complies with a on JDK 1.3 but not on JDK 1.2
case 256:
case 0 :
default :
case 80 :
}
}
so please let me know which JDK is to be used JDK 1.2 or 1.3 ??
please reply urgently as i have to prepare .
regards
sachin
------------------

------------------
hi !
can any one explain
there are 2 class
1. Base class
2. Child class
child class extends base class and in child class if we write
class Child extends Base
{
Child obj1 = new Child(); // no problem
Base obj2 = new Base(); // no problem
Base obj3 = new Child(); // please explain this in all possible situations
// i.e it's working when a method is called from
// base class or from child class
can we use instanceof operator here to check to which the obj belongs to ?
please reply
regards
sachin
delhi
------------------
Hi
my self sachin .
i am preparing for SCJP and shedule to give on 18 june
There is a big confusion :
Questions in SCJP are tested on JDK 1.2 or JDK 1.3 ???
as i have JDK 1.3 and there is ambiguity with JDK 1.2
for example
void test (byte x)
{
switch (x)
{
case 'a' : // complies with a on JDK 1.3 but not on JDK 1.2
case 256:
case 0 :
default :
case 80 :
}
}
so please let me know which JDK is to be used JDK 1.2 or 1.3 ??
please reply urgently as i have to prepare .
regards
sachin
------------------
hi to all !
where can we utilse the real power of J2ME effectively ?
and what is it's main and new feature that will make it a leader
as it was for Java ?
pl let me know
regards
sachin
Delhi
------------------
20 years ago
well done !!!
its really nice score congrats !
i am also giving SCJP on 18 june can u give some tips about exams
tutorials , mocks e.t.c
regards
sachin kumar
sachinkkansal@rediffmail.com
Delhi
20 years ago
hi to all javaranchers
i am taking my SCJP exam on tuesday 29 may.
i just want to know wether the Q's in the real are so tough as in mock exams like JQ+ ?
JCHQ (marcusgreen exam ) are quite easy as compared to it
is it possible to find out weightage given to each exam objectives ?
and last one can i see one one's marksheet who have passed the exam
right on this site or any where ?
please post u r reply as soon as possible
regards
sachin kumar

------------------
hi to all,
i have just faced a problem, which i think can be solved here !
i have written following code in
stat.java
// start of code

abstract class stat1
{
abstract public void method();
}
abstract class stat2 extends stat1
{
int f = 20; // these 2 lines says error
System.out.println(f);
}
public class stat
{
int a = 10;
static int b = 20;
public static void main (String args[])
{
int c = args.length;
System.out.println(c);
System.out.println(args[0]);
System.out.println(b);
stat d = new stat();
System.out.println(d.a);
}
}
// end of code
when i am compling it it is giving 2 errors
at line 10
<identifer> expected and
cannot resolve symbol System.out.println
please copy the code and try out at u r system.
thanks in advance
sachin kumar
sachinkkansal@rediffmail.com
------------------
please let me know about the pre requisities for this exam
and the prodcedure along with time and fees
regards
sachin