I would like to know from the people who have passed the Developer Exam
how difficult and how much time-consuming did they find the whole
process.And what advantages they are deriving from the qualification.

Could you please explain threads in detail?

"chris west" <chris-@...> wrote:
original article:http://www.egroups.com/group/javacertstudy/?start=11
> "sivateam" <thegreatsiva_200-@...> wrote:
> original article:http://www.egroups.com/group/javacertstudy/?start=10
> > Our study group has posted some 50 sample questions related to java
> > security awareness. If you want to refer please look at
> >
> > www.mathus.homepage.com
> >
> > sivateam
> >
>
> I tried the "Java Architect" link.  Got "There is an error with your
> selection."  Just letting you know ...
>

NOw it is resolved
> Chris
>

I have a confusion about how to write the client side which is able to
run both in the networked and in the non-networked mode. Also how to
implement database level locking.Can somebody provide any suggestions.

Regards,
OP Verma

Hi, Hua Cao & Chris

I think your Java version are different. For Java 1.1.6 the result is "Not
Equal", for Java 1.2 the result is "Equal". You may find some hints in the
"What's new" from Java 1.2 release.

Frank Xie

----- Original Message -----
From: "Christer Loefving" <chlof@...>
To: <javacertstudy@eGroups.com>
Sent: Monday, February 28, 2000 3:43 PM
Subject: [javacert] Re: Strings confused!!!!please help me!!!!!


> Hi,
>
> I tested too and got "EQUAL". That's because the result of
> s1.toLowerCase()
> "abcs" already exists in the String Pool. Thus they point to the same
> object.
>
> /Christer
>
> hua cao" <sm12r-@...> wrote:
> original article:http://www.egroups.com/group/javacertstudy/?start=21
> > Hi,
> >
> > After the following code is executed
> >
> > s += "morning";
> >
> > s now refers to a NEW object. You are correct that "good" is
> > not referred to by s any more.
> >
> > Regarding String class, I would like to add a new discovery here.
> >
> > Dylan Walsh (dylanwalsh@...) claims in his "Sun Certified
> > Programmer Examination Revision Book" that for the following code
> >
> > String s1 = "abcd"; // all in lowercase
> > String s2 = s1.toLowerCase();
> >
> > if ( s1 == s2)
> > System.out.println("EQUAL");
> > else System.out.println("NOT EQUAL");
> >
> >
> > would print out "EQUAL". However, I did a test and the
> > result is "NOT EQUAL".
> >
> > Any idea?
> >
> > Hua
> >
> >
> >
> >
> >
> >
> >
> > >From: "sree" <ssarma@...>
> > >Reply-To: javacertstudy@eGroups.com
> > >To: javacertstudy@eGroups.com
> > >Subject: [javacert] Strings confused!!!!please help me!!!!!
> > >Date: Thu, 24 Feb 2000 10:19:57 -0800
> > >
> > >Hi,
> > >
> > >                 The more i study about strings the more i get
> > >confused.There were lot of
> > >                 discussions about strings earlier in this forum but
> > >still i am bewildered. I
> > >                 know that strings are immutable if that's the deal
> in
> > >the following case.
> > >
> > >                 String s = "good"
> > >                 s+= "morning" file://isn't this wrong??? but it
compiles
> > >well and prints
> > >                 goodmorning.
> > >
> > >                 Haven't i changed the original contents of the
> string
> > >s.One more thing if it
> > >                 creates a new object by appending "morning" to
> "good"
> > >does that mean
> > >                 "good" is eligible for garbage collection now. How
> can
> > >i check for the
> > >                 immutability of the strings.
> > >
> > >                 A deep explanation would be very helpfull.
> > >
> > >                 Thank you very much.
> > >
> > >
> > >--------------------------------------------------------------------
> ----
> > >To Post a message, send it to:   javacertstudy@eGroups.com
> > >To Unsubscribe, send a blank message to:
> > >javacertstudy-unsubscribe@eGroups.com
> > >
>
>
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javacertstudy-unsubscribe@eGroups.com
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>
>

Hi,

I tested too and got "EQUAL". That's because the result of
s1.toLowerCase()
"abcs" already exists in the String Pool. Thus they point to the same
object.

/Christer

hua cao" <sm12r-@...> wrote:
original article:http://www.egroups.com/group/javacertstudy/?start=21
> Hi,
>
> After the following code is executed
>
> s += "morning";
>
> s now refers to a NEW object. You are correct that "good" is
> not referred to by s any more.
>
> Regarding String class, I would like to add a new discovery here.
>
> Dylan Walsh (dylanwalsh@...) claims in his "Sun Certified
> Programmer Examination Revision Book" that for the following code
>
> String s1 = "abcd"; // all in lowercase
> String s2 = s1.toLowerCase();
>
> if ( s1 == s2)
> System.out.println("EQUAL");
> else System.out.println("NOT EQUAL");
>
>
> would print out "EQUAL". However, I did a test and the
> result is "NOT EQUAL".
>
> Any idea?
>
> Hua
>
>
>
>
>
>
>
> >From: "sree" <ssarma@...>
> >Reply-To: javacertstudy@eGroups.com
> >To: javacertstudy@eGroups.com
> >Subject: [javacert] Strings confused!!!!please help me!!!!!
> >Date: Thu, 24 Feb 2000 10:19:57 -0800
> >
> >Hi,
> >
> >                 The more i study about strings the more i get
> >confused.There were lot of
> >                 discussions about strings earlier in this forum but
> >still i am bewildered. I
> >                 know that strings are immutable if that's the deal
in
> >the following case.
> >
> >                 String s = "good"
> >                 s+= "morning" //isn't this wrong??? but it compiles
> >well and prints
> >                 goodmorning.
> >
> >                 Haven't i changed the original contents of the
string
> >s.One more thing if it
> >                 creates a new object by appending "morning" to
"good"
> >does that mean
> >                 "good" is eligible for garbage collection now. How
can
> >i check for the
> >                 immutability of the strings.
> >
> >                 A deep explanation would be very helpfull.
> >
> >                 Thank you very much.
> >
> >
> >--------------------------------------------------------------------
----
> >To Post a message, send it to:   javacertstudy@eGroups.com
> >To Unsubscribe, send a blank message to:
> >javacertstudy-unsubscribe@eGroups.com
> >

"sandeep pashine" <sanpas-@...> wrote:
original article:http://www.egroups.com/group/javacertstudy/?start=20
> I want to know more about java developer exam
>
> Thanks
> Sandeep
>

"The Complete Java 2 Certification Study Guide" (Roberts/Heller/Ernest)
has several chapters regarding this certification.  I found them very
informative.  The least expensive place to buy this book that I know of
is bookpool.com.

This exam revolves around a client/server project which must be
completed by implementing a set of requirements supplied by Sun.  After
the project is completed and submitted, a written exam is then
required.  The book I referenced will help you determine if you have
sufficient experience to pursue this exam, as well as providing
ideas/code/etc that are very useful to know during the process of
designing and coding the project.

If you do decide to purse this certification, it is very important to
spend sufficient time to thoroughly understand the supplied requirement.

Hope this was helpful ...

Chris W.

have a look on
http://www.geocities.com/SiliconValley/Cable/1025/exam1.html

-Sreenivasa Kumar Majji

----- Original Message -----
From: "mdrafi" <mdrafi555@...>
To: <javacertstudy@eGroups.com>
Sent: Friday, February 25, 2000 17:58
Subject: [javacert] No Subject


| i like  to get some tricky questons from green or any body else.there
| thank in advance for jcp
|
|
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|

i like  to get some tricky questons from green or any body else.there
thank in advance for jcp

Hi,

After the following code is executed

s += "morning";

s now refers to a NEW object. You are correct that "good" is
not referred to by s any more.

Regarding String class, I would like to add a new discovery here.

Dylan Walsh (dylanwalsh@...) claims in his "Sun Certified
Programmer Examination Revision Book" that for the following code

String s1 = "abcd"; // all in lowercase
String s2 = s1.toLowerCase();

if ( s1 == s2)
System.out.println("EQUAL");
else System.out.println("NOT EQUAL");


would print out "EQUAL". However, I did a test and the
result is "NOT EQUAL".

Any idea?

Hua







>From: "sree" <ssarma@...>
>Reply-To: javacertstudy@eGroups.com
>To: javacertstudy@eGroups.com
>Subject: [javacert] Strings confused!!!!please help me!!!!!
>Date: Thu, 24 Feb 2000 10:19:57 -0800
>
>Hi,
>
>                 The more i study about strings the more i get
>confused.There were lot of
>                 discussions about strings earlier in this forum but
>still i am bewildered. I
>                 know that strings are immutable if that's the deal in
>the following case.
>
>                 String s = "good"
>                 s+= "morning" //isn't this wrong??? but it compiles
>well and prints
>                 goodmorning.
>
>                 Haven't i changed the original contents of the string
>s.One more thing if it
>                 creates a new object by appending "morning" to "good"
>does that mean
>                 "good" is eligible for garbage collection now. How can
>i check for the
>                 immutability of the strings.
>
>                 A deep explanation would be very helpfull.
>
>                 Thank you very much.
>
>
>------------------------------------------------------------------------
>To Post a message, send it to:   javacertstudy@eGroups.com
>To Unsubscribe, send a blank message to:
>javacertstudy-unsubscribe@eGroups.com
>
>------------------------------------------------------------------------
>eGroups.com Home: http://www.egroups.com/group/javacertstudy/
>http://www.egroups.com - Simplifying group communications
>
>

______________________________________________________

Hi,

                 The more i study about strings the more i get
confused.There were lot of
                 discussions about strings earlier in this forum but
still i am bewildered. I
                 know that strings are immutable if that's the deal in
the following case.

                 String s = "good"
                 s+= "morning" //isn't this wrong??? but it compiles
well and prints
                 goodmorning.

                 Haven't i changed the original contents of the string
s.One more thing if it
                 creates a new object by appending "morning" to "good"
does that mean
                 "good" is eligible for garbage collection now. How can
i check for the
                 immutability of the strings.

                 A deep explanation would be very helpfull.

                 Thank you very much.

Hello All

I am new to your group, just joined yesterday. I am thinking of
thinking of taking up Java Certification.

Can anybody suggest some really good books as per my background.

I have been into IT for around 5 years now and quite a few years of it
have been using PB-Oracle. Picked up Java in September and have been
reading a lot of material on java and related technologies.

Some sites say book by Simon Roberts, Philip Heller is good.
Others say it covers a lot about API which is not really required.

Also have some good reviews on books by Bill Brogden Exam Prep and Exam
Cram.
Has anybody read them. Are they for more experienced people.

Please do provide any info you all might have

Thanks

Best Regards
N.J.

"frank z.f. xie" <frank_xi-@...> wrote:
original article:http://www.egroups.com/group/javacertstudy/?start=4
> Hi, There
>
> For anyone who have taken SCJP test, would you please tell me if I
> would be told the number of the correct items for each question?
>
No, you will be asked questions like

//Quote
Which of the following are Java modifiers?

1) public
2) private
3) friendly
4) transient
4) vagrant

//EndQuote

You will not be told how many are correct items.

Try a search engine for mock exams and you will get a good idea of what
the questions are like.

Marcus

Hi everyone ,
Passed SCJP2 today(22/02/2000) with 78%. I sincerly thank all the
persons who are behind these discussion  forums. this is very good
place to clear your doubts.
Special thanks to Marcus , Roll & Tony.
About my test, first my score is not very good mainly because of those
theory type Qs. which ask you "Which of the following is/are true about
XXX(Some topic) ?" I had about 8 such Qs.I had  2 from GridBag, 3 from
IO.
My ref. Roberts & Heller -Sybex, Java Lang. Specification, API & all
those great tests on the net without which this was not possible .

I once again thank you all who are behind all these wonderfull sites.

Pankaj Sachdeva

No difference at all.
Interfaces are implicitly abstract.

-Sreenivasa Kumar Majji

----- Original Message -----
From: "B. V. Narayana" <bvnarayana@...>
To: <javacertstudy@eGroups.com>
Sent: Wednesday, February 23, 2000 06:19
Subject: [javacert] No Subject


| Hi all,
|
| When we define an interface as "abstract interface", how different is
| this w.r.t. "interface"?
|
| Thanks
| Batchu
|
|
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|
|

Hi all,

When we define an interface as "abstract interface", how different is
this w.r.t. "interface"?

Thanks
Batchu

"chris west" <chris-@...> wrote:
original article:http://www.egroups.com/group/javacertstudy/?start=11
> "sivateam" <thegreatsiva_200-@...> wrote:
> original article:http://www.egroups.com/group/javacertstudy/?start=10
> > Our study group has posted some 50 sample questions related to java
> > security awareness. If you want to refer please look at
> >
> > www.mathus.homepage.com
> >
> > sivateam
> >
>
> I tried the "Java Architect" link.  Got "There is an error with your
> selection."  Just letting you know ...
>
> Chris
>
Now it is resolved. Sorry for the roadblock. ...sivateam

Hi
	 I would like to know about how to prepare for the java certification.
I also wanted to know if there are any institutes in India which give
this certification.

"sivateam" <thegreatsiva_200-@...> wrote:
original article:http://www.egroups.com/group/javacertstudy/?start=10
> Our study group has posted some 50 sample questions related to java
> security awareness. If you want to refer please look at
>
> www.mathus.homepage.com
>
> sivateam
>

I tried the "Java Architect" link.  Got "There is an error with your
selection."  Just letting you know ...

Chris

Our study group has posted some 50 sample questions related to java
security awareness. If you want to refer please look at

www.mathus.homepage.com

sivateam

I have spent weeks designing/coding my Developer Project, working alone
with few "talking resources".  I went into this cerification a bit
experience poor, but have managed to obtain the correct materials from
which to study and now feel that I have the knowledge to successfully
complete this certification.  However, my approach has resulted in many
design changes, etc.  I did overdo the interface, providing additional
capability to adequately test some of the functionality I was requried
to add.  I currently have about 6000 lines of code/comments and am
nearly complete with it.

Sun claims that they give explicit requirements from which to design
the project, yet in the some document admit that some things have been
left purposefully vague.  This has caused me to overdesign a bit,
something I'm a bit concerned about (as their requirements are written
in such a manner as to discourage this .... likely to make things a bit
more fair for those working on the project, as well as making the
evaluation a bit more definitive.

I just would like to get some feedback regarding how much time others
have taken to do the project, the number of lines of code they
submitted, etc.  Also, how difficult is the exam (without getting to
precise regarding its content)?  Does anybody know how many people have
completed this certification?

I'm concerned about a few things:

1) It wasn't necessary for me to develop an Applet, and consequently
didn't use to many layout managers (which sometimes are cumbersome to
use and often result in awkward interfaces ... although they do have
their place).
2) I didn't alter the data interface, even though the supplied code
passed more information accross the network then necessary(making it a
bit inefficient).  I wasn't certain if I had a license to make these
type of changes, as it might impact the way Sun evaluates my project.
3) By "test harness", I assumed that Sun meant the functionality
requirements listed in their requirements document.  I didn't receive a
"tool" which would provide a means to test my design.
4) I did use ArrayList, Collections class, plus a few others, but not
Iterator.
5) A person could spend much time with exception handling alone.  My
approach was to do the minimum, as their evaluation criteria doesn't
assign many points to this aspect.

Part of my difficulty with this is that I've never been involved in the
design of a client/server app.  Just thinking about how to do it has
made me well aware how complex it can be (e.g., do you have a continous
connection or connect/disonnect with each transaction; do you launch a
separate thread for each transaction or do you use a thread queue ... I
could go on).

What I'm doing is to putting together a thorough but concise summary of
my design decisions, as they request in the spec.  This will at least
demonstrate I have some knowledge of this type of design.

Any comments on the above would be appreciated.  I've worked too long
and hard on this to not pass.

Once I'm finished and have received my results, I'll gladly provide a
bit of insight regarding my experience with this certification.

Thanks ...

Chris

> But does it tell me how many right answers there are? Just like MCSE, it
> tells you to "Select two", "Select three", etc for the check box type.

It does not.

___________________________________________________________________________
ian wojtowicz                                           http://javacert.com

Hi, there

Thanks for your inputs.

But does it tell me how many right answers there are? Just like MCSE, it
tells you to "Select two", "Select three", etc for the check box type.

Frank Xie

----- Original Message -----
From: "Sreenivasa "Msk" Majji" <sreenivasa.majji@...>
To: <javacertstudy@egroups.com>
Sent: Monday, February 21, 2000 2:35 PM
Subject: [javacert] Re: SCJP info


> Hi
>
> I passed SCJP exam in June 1999.
>
> If I understood your question correctly my answer is,
> in the test you have to select ALL correct answers otherwise it will be
counted as wrong.
> For some questions it is radio button type (one answer) and some questions
it is check box type.
>
>
> -Sreenivasa Kumar Majji
>
>
>
>
> ----- Original Message -----
> From: "Frank Z.F. Xie" <frank_xie@...>
> To: <javacertstudy@eGroups.com>
> Sent: Sunday, February 20, 2000 22:05
> Subject: [javacert] SCJP info
>
>
> | Hi, There
> |
> | For anyone who have taken SCJP test, would you please tell me if I
> | would be told the number of the correct items for each question?
> |
> |
> | ------------------------------------------------------------------------
> | To Post a message, send it to:   javacertstudy@eGroups.com
> | To Unsubscribe, send a blank message to:
javacertstudy-unsubscribe@eGroups.com
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Hi

I passed SCJP exam in June 1999.

If I understood your question correctly my answer is,
in the test you have to select ALL correct answers otherwise it will be counted
as wrong.
For some questions it is radio button type (one answer) and some questions it is
check box type.


-Sreenivasa Kumar Majji




----- Original Message -----
From: "Frank Z.F. Xie" <frank_xie@...>
To: <javacertstudy@eGroups.com>
Sent: Sunday, February 20, 2000 22:05
Subject: [javacert] SCJP info


| Hi, There
|
| For anyone who have taken SCJP test, would you please tell me if I
| would be told the number of the correct items for each question?
|
|
| ------------------------------------------------------------------------
| To Post a message, send it to:   javacertstudy@eGroups.com
| To Unsubscribe, send a blank message to: javacertstudy-unsubscribe@eGroups.com
|
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|
|

Hi, There

For anyone who have taken SCJP test, would you please tell me if I
would be told the number of the correct items for each question?

Hi  Qaiser,
      Two important points with regards to BitShift in java are
1)   The left shift and unsigned right shift fill the vacated spaces
with zeroes
2)   the signed right shift fill the vacated spaces with the sign bit.

So in this case,
     i = 1                       00000000 00000000 00000000 00000001
     i<<31                     10000000 00000000 00000000 00000000
     i>>31                     11111111 11111111 11111111 11111111
     i>>1                       11111111 11111111 11111111 11111111
which is  i = -1

Same is the case for j.  that's the reason.

Even though j is not right shifted finally by 1 place it is still -1.

Cheers,
krishna

Can any one explain me why the output of following code is
i = -1
j = -1

public class BitShift
{
    public static void main(String args[])
    {
       int i = 1;
       i <<= 31;
       i >>= 31;
       i >>=1;

       int j = 1;
       j <<= 31;
       j >>=31;

      System.out.println("i = " +i);
      System.out.println("j = " + j);

    }
}

Hi,

Welcome to the egroups discussion forum for http://javacert.com

We are currently upgrading the community software on our site and will be using
egroups as a temporary replacement while development and testing is completed at
javacert.com

Cheers,

Ian Wojtowicz