Java

Re: Java Heap Space problem(solved)

7-May-10 2:16

Thanks a Lot Arpita. Rose | [Rose]

With ur suggestion I am able to load it without batch file.

Thx Again
Regards
Yogesh

Arrpita7-May-10 15:40

How to update Group and User in JBPM4.3

7-May-10 15:40

read d calc problem shown below..in msg board by me..try .if u can...

sinron3-May-10 16:14

sinron

3-May-10 16:14

Hello, everyone!I'm a freshman for JBPM.I found there were only create and delete functions in IdentityService,but no update.If I want to update the name of a group or user,how to do?

I thought I could delete the group first,then recreate it.However,when I delete the group,the memberships associated with this group will be also deleted.I have to rebuild those associations,and that's very troublesome.

Could you please tell me how to deal with it?
Thank you!

To ask about right allignment in a calc.

Arrpita30-Apr-10 16:10

Re: To ask about right allignment in a calc.

30-Apr-10 16:10

using method

JTextField tf=new JTextField("0");

tf.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

in a text field..& when i use concatenation of any number with 0 which is already in text field using as below..

tf.setText(tf.getText()+".0");

then dot is coming in in other side of 0...as .0

but if do as...

tf.setText(tf.getText()+"10");
tf.setText(tf.getText()+"+0");

i.e. "1" or "+" in place of ".",then answer is coming as usual... as 09 or 0+

any ideas????? m so confused... Sigh | :sigh:

TorstenH.6-May-10 0:54

TorstenH.

6-May-10 0:54

don't do this

TextFiled.setText(TextFiled.getText())

please use some variables. There are some operations on numbers which can ruin your day. Always convert Numbers to String if you want to concat them in some way. And use String.concat, the + Operator is multible overloaded.

Operators in Java @ sun.com Doc

greets
Torsten

I never finish anyth...

Re: To ask about right allignment in a calc.

Arrpita6-May-10 15:55

Re: To ask about right allignment in a calc.

6-May-10 15:55

me saying...dis problem is in case of right allignment only,not in d left.....y is it so?????

TorstenH.11-May-10 21:54

TorstenH.

11-May-10 21:54

this shouldn't be a matter of alignment, this is a general problem. Also there is an

The TextField uses Strings, your input is an int-Value or float. Using the + Operator within this environment is risky. Also is there an hierachy of those operator-actions:
Hierachy of Operators @ princeton.edu

If you want to concat an certain string to another, no matter if the Value of the String is a number or not, always use String.concat()

in your given example:

JTextField tf=new JTextField("0");
tf.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

String strText = tf.getText();

String strNewText = strText.concat(strText, ".0");
tf.setText(strNewText);

and just in case:
you know, there are far better ways to give a number a certain format:

NumberFormat in Java doc @ sun.com

greets
Torsten

I never finish anyth...

Re: To ask about right allignment in a calc.(solved)

Arrpita12-May-10 16:19

converting file data to string

12-May-10 16:19

Thanks..mr. Torsten

voip project

sam_dheol28-Apr-10 20:57

sam_dheol

28-Apr-10 20:57

i am doing project in voip in java eclipse..
now i am unable do this but short time (5 days ) remaining for review..
so please if anyone have coding me mail me arunbca_xxx@yahoo.co.in..
please its urgent

Re: voip project

Peter_in_278028-Apr-10 21:03

Peter_in_2780

28-Apr-10 21:03

Did you read guideline #2 above?

Re: voip project

Richard MacCutchan28-Apr-10 22:31

Richard MacCutchan

28-Apr-10 22:31

sam_dheol wrote:
i am doing project in voip in java eclipse..

Well it seems that you are not doing it as you appear not to have started yet. Or do I misunderstand and you have completed most of the project and are just stuck on one problem?

If you have not started then I doubt that you are going to complete it in 5 days.

BTW saying that it is urgent is unlikely to get people to write it for you.

It's time for a new signature.

002comp27-Apr-10 23:54

27-Apr-10 23:54

Hello Friends
I am reading a file Like this here is the code below:

FileInputStream in = new FileInputStream(file);
Reader r = new InputStreamReader(in, "ISO-8859-1");
int intch;
while ((intch = r.read()) != -1) {

  int temp = intch;

}

Previously I was putting all data into another file char by char like this

OutputStream out = new FileOutputStream(outFilePath);
and using out.write(temp); in while  loop

And it was working fine.
But now The value coming in temp ,I want to store in a string.temp contains some int value of that charset and I want tht in string.

Any Suggestions??
Thanks In Advance.
Regards
Yogesh

002comp28-Apr-10 1:54

28-Apr-10 1:54

Or Is there any way to read file line by line thru BufferedReader whose data is in ISO-8859-1 charset.

I tried like this even

this(new BufferedReader(new InputStreamReader(new FileInputStream(file),"ISO-8859-1")));

but bufferedReader is coming null.

Any Ideas??

Regards
Yogesh

jwhite928-Apr-10 2:44

jwhite9

28-Apr-10 2:44

I'm kind of new to this whole Java thing but there is a readLine() method on BufferedReader. How about something like this? ISO-8859 is a standard 8 bit character encoding so you shouldn't have problems reading the file.

<br />
String line;<br />
BufferedReader br = new BufferedReader(new FileReader(fileName));<br />
<br />
while ((line = br.readLine()) != null) {<br />
   // do stuff with line<br />
}<br />
<br />
br.close();<br />

002comp28-Apr-10 18:07

28-Apr-10 18:07

I already Tried like this but bufferedReader is coming null.
And moreover it would be better if somebody suggest how can I convert each ISO-8859-1 character into String Bcoz I have to do some decoding for each character.
Thanks
Yogesh

Re: converting file data to string(Solved)

David Skelly28-Apr-10 22:27

David Skelly

28-Apr-10 22:27

What do you mean "bufferedReader is coming null"?

If I do this:

BufferedReader br = new BufferedReader(new FileReader(fileName));

then either I will get a BufferedReader created or I will get a FileNotFoundException. I can't quite see how you are getting a null here.

If file encoding is a problem for you then use InputStreamReader:

http://java.sun.com/docs/books/tutorial/i18n/text/stream.html[^]

002comp28-Apr-10 23:24

28-Apr-10 23:24

Thx a Lot David.Tht link is very helpful and solves my prob.
And actually bufferedReader.readLine is coming null tht i just forget to write.

Anyway,Thx again.

Regards
Yogesh

Json -> java object

Evgeni5723-Apr-10 9:37

Evgeni57

23-Apr-10 9:37

Hi
There is no problem to convert JSON which looks like this:
"{\"response\": {\"Code\":200, \"Text\":\"Ok\", \"Id\":\"123\"}}
to the following object:

public class JsonCL
{
    private int Code;
    private String Text;
    private int Id;
    
    setters;
    getters;
}

But what about the JSON, which contains arrays of data, and nested arrays?
For example:

{\"response\": {\"Code\":200, \"Text\":\"Ok\", \"Id\":\"123\", \"data\":{\"groups\": [{\"key1\":\"value1\", \"nestedData\":[{\"key1\":\"value1\", \"key2\":\"value2\", \"key3\":\"value3\"},{\"key1\":\"value4\", \"key2\":\"value5\", \"key3\":\"value6\"}]},{\"key1\":\"value2\", \"nestedData\": [{\"key1\":\"value7\", \"key2\":\"value8\", \"key3\":\"value9\"},{\"key1\":\"value10\", \"key2\":\"value11\", \"key3\":\"value12\"}]}]}}}

How can I convert such JSON into java object?

Thanks!

Re: Json -> java object

TorstenH.6-May-10 0:56

TorstenH.

6-May-10 0:56

check this:

Json.Array @ Json.org

greets
Torsten

I never finish anyth...

VPN project tips??

Strategic_Thinker20-Apr-10 6:41

Strategic_Thinker

20-Apr-10 6:41

Hello all dear friends Smile | :)

I was wondering if anyone can helps me, I'm doing my final year project and it's on VPN in Java , so can anybody provides me with an idea, tip or anything to do in VPN and I'll be so thankful

The way of Professional softwares start in two:
Simple codes and develop it.
Simple but effective ideas.

Richard MacCutchan20-Apr-10 11:06

Richard MacCutchan

20-Apr-10 11:06

Try doing your own research - start with Google "VPN Java" and go on from there. When you hit a problem then try asking a specific technical question.

It's time for a new signature.

Strategic_Thinker22-Apr-10 4:12

Strategic_Thinker

22-Apr-10 4:12

thx I've tried a lot and thus why I'm here asking , If I found a solution I wouldn't be here , thx for ur time

The way of Professional softwares start in two:
Simple codes and develop it.
Simple but effective ideas.

Richard MacCutchan22-Apr-10 5:51

Richard MacCutchan

22-Apr-10 5:51

ZaidIT wrote:
I'm doing my final year project and it's on VPN in Java

So this is your final year project but you have no ideas about it, but you expect someone here to provide a solution. You need to understand that this site is setup to help people who do their own work but get stuck on technical problems or bugs. We don't have the time to provide full solutions, design specifications etc. If you really have no idea where to start with this project may I respectfully suggest you try something within your skill set.

It's time for a new signature.

Paul Conrad22-Apr-10 6:21

Paul Conrad

22-Apr-10 6:21

Richard MacCutchan wrote:
If you really have no idea where to start with this project may I respectfully suggest you try something within your skill set.

I second that, especially looking back at his posts from about 2 years ago. He should pursue a different career perhaps.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham