Java

Member 1003910921-Feb-14 0:11

Member 10039109

21-Feb-14 0:11

thank u Richard MacCutchan!!!
please can u explain some detail im new for this

Richard MacCutchan21-Feb-14 0:33

21-Feb-14 0:33

I have given you the link to the documentation, so you should go there, read it, and try some of the methods for yourself. Learning by doing is much more useful than having someone else do it for you.

Member 1003910921-Feb-14 0:41

Member 10039109

21-Feb-14 0:41

thank u Richard MacCutchan!!!
what ever u sent right now im reading if i got any doubts i ask you thank u

chronodekar21-Feb-14 2:08

21-Feb-14 2:08

I'm curious. Can you provide a snippet of the XML file you are trying to read?

-chronodekar

Richard MacCutchan21-Feb-14 2:22

how to profile a java application(beginner) ?

21-Feb-14 2:22

You replied to the wrong person.

chronodekar18-Feb-14 6:28

Re: how to profile a java application(beginner) ?

18-Feb-14 6:28

I just ran an internet search for "eclipse java profiler". The results are confusing. I was expecting to find a list of tools or at least a simple tutorial on how to use a free one, but haven't seen anything of the such.

I find it hard to believe that an OSS profiler doesn't exist. Can someone point me to a tutorial on how to use one? Preferably with eclipse integration.

Or should I switch over to netbeans?

-chronodekar

Richard MacCutchan18-Feb-14 22:32

Re: how to profile a java application(beginner) ?

18-Feb-14 22:32

http://www.eclipse.org/tptp/home/documents/tutorials/profilingtool/profilingexample_32.html[^] was the second hit in my Google search.

chronodekar19-Feb-14 4:05

Re: how to profile a java application(beginner) ?

19-Feb-14 4:05

I've seen that too, but if you download the newer eclipse releases, you'll see that it doesn't even have the "Profiling and Logging" perspective mentioned in that tutorial. Furthermore, the tutorial link itself indicates that its a part of "TPTP", the "Eclipse Test & Performance Tools Platform Project", which hasn't been updated since Feb-2011 !

-chronodekar

Richard MacCutchan19-Feb-14 4:22

19-Feb-14 4:22

There were other links[^] but that seemed the most appropriate. If Google does not find you anything better then the chances are that nothing better exists.

Pattern

V$ethi14-Feb-14 0:12

14-Feb-14 0:12

Hello every one ..emm a beginner in progmming . And I have a problem while printing a asterisks patter pattern is :
i have to print the patter as per th user input like {3,2,4}
*
* *
* * *
* * *
this pattern should be for n inputs.MY problem is after printing a vertical line how could i go back to top to print another line. I have understood that first i have to find the max among all the inputs then have to print the max-input no blank in every vertical line but i dnn knw how can i print vertically Confused | :confused:

Richard MacCutchan14-Feb-14 0:47

14-Feb-14 0:47

Well the numbers (3,2,4) don't seem to match your pattern anywhere so it is difficult to see the connection between the two. However, in order to print patterns of stars you print rows first. So it is just a matter of using the counts to decide how many to print on each row. If you try figuring out how you would do it using pen and paper, then coverting that to code should be quite easy.

Veni, vidi, abiit domum

V$ethi15-Feb-14 5:01

15-Feb-14 5:01

opp!!! that was my typing mistake first i want to print the 3 stars then 2 and then 4 means basically depending upon the oder of input given by user ..

Richard MacCutchan15-Feb-14 6:03

15-Feb-14 6:03

So what is the problem? Just use each number to create a loop and print that number of stars.

Veni, vidi, abiit domum

V$ethi15-Feb-14 16:25

15-Feb-14 16:25

i have to print the stars in vertical manner mean first three stars vertical line then 4 stars vertical line and so on basically like the tower of asterisks . the problem is that after printing a line how can i take back control to the top to print another asterisks tower ??

Richard MacCutchan15-Feb-14 21:11

15-Feb-14 21:11

You need to save these numbers in an array which you then use to calculate how many stars to print across each line. It's just a question of a bit of logic and mathematics.

Veni, vidi, abiit domum

chronodekar17-Feb-14 21:18

17-Feb-14 21:18

Try changing your approach to the problem. Let's try this.
Input : 2, 4, 3
Desired output:

*
**
***
***

For graphical purposes let me remake the output as follows

*OO
**O
***
***

Replace the "O" with spaces. Does it help?

-chronodekar

Richard MacCutchan17-Feb-14 21:30

17-Feb-14 21:30

How exactly does that help?

chronodekar18-Feb-14 3:40

18-Feb-14 3:40

There might be a more efficient way of doing it, but here's my thinking.

1. Arrange all the numbers in descending order. Make note of the largest one ( = A). Also store the numbers in an array ( = ARRAY)
2. Count the number of inputs ( = B).
3. Visualize the output in the form of a rectangle - you need to draw (with ASCII) a rectangle whose height is A and width B. Alternatively, you need to print A no. of lines with B characters.

Now we come to implementation. In pseudo-code;

Java

for (i = A ; i>0; i--) 
{
    for (j = 0; j<B; j++)
    {
        if (ARRAY(j) > i)
            print("*");
        else
            print("O");
    }
    print("\n");    
}

I think that should do it. Any edge case I missed?

-chronodekar

jschell14-Feb-14 10:30

jschell

14-Feb-14 10:30

If I understand you post your 'algorithm' is incorrect.
You do not print vertically - Instead you print horizontally.

Hopefully you have already learned about loops and arrays. So
1. Put the values in an array
2. Write a method that finds the maximum value in the array. When if finds it set the array location to -1 (this is how you 'remove' it.)
3. Write a method that takes a X value and prints that many stars.
4. Put 2 and 3 together to print all the rows.
5. Think about how you know it will end (the '-1' is a hint.)

V$ethi15-Feb-14 5:07

How to encrypt old data instead of using jasyptHibernateEncryptorin

15-Feb-14 5:07

yeah i have read about loops and array.i can also find the max among all the elements of an array but what are you saying about location and all couldn't understand... Cry | :((

Member 1058731510-Feb-14 21:50

Member 10587315

10-Feb-14 21:50

Java

Hi
This is suman.
we are using spring with Hibernate in to my application,but we want to implenting jasyptHibernateEncryptorin in to my application.

its working fine when storing a new entry into database table and fetching the same entry,
but problem here its how to encrypt my old data.

can you please any one help me , ASAP

System timezone

Hans Ruck9-Feb-14 22:06

Hans Ruck

9-Feb-14 22:06

Hi,

Is there any way to read the current time zone of the operating system? I need to check it to see if it has been updated.
I have to do this every minute, without restarting the application and without launching an external process.

Thank you very much for your attention.

Re: System timezone

Richard MacCutchan9-Feb-14 22:47

9-Feb-14 22:47

Try the following:

Java

TimeZone tz = Calendar.getInstance().getTimeZone();  
System.out.println(tz.getDisplayName());
System.out.println(tz.getID());

Note that an application can set its own time zone, independently of the system.

Veni, vidi, abiit domum

Re: System timezone

Hans Ruck9-Feb-14 23:20

Hans Ruck

9-Feb-14 23:20

Thank you Richard. But try this and you will see what I mean:

Java

TimeZone tz = Calendar.getInstance().getTimeZone();  
System.out.println(tz.getDisplayName());
System.out.println(tz.getID());

tz = Calendar.getInstance().getTimeZone();   // breakpoint here, stop, change the system time zone and then continue running
System.out.println(tz.getDisplayName());
System.out.println(tz.getID());

The time zone is set at the beginning of the current JVM process. It is subsequently detached from the system time zone and it sadly seems that there is no orthodox way to reattach it...

Bogdan Rechi.

Re: System timezone

Richard MacCutchan10-Feb-14 0:06