Java returns wrong DynamicIP

I hava a dynamic IP address and the host:
"somehost.ip.net" returns my dynamic IP.
If I check it with nslookup or ping, I always see my actual IP.
I have run this code:
try {
 InetAddress addr = InetAddress.getByName("somehost.ip.net");
 byte[] ipAddr = addr.getAddress();
 String ipAddrStr = "";
 for (int i=0; i<ipAddr.length; i++) {
 if (i > 0) {
 ipAddrStr += ".";
 ipAddrStr += ipAddr&0xFF;
 } catch (UnknownHostException e1) {
 e1.printStackTrace();
On my computer it returns the right IP. I have tried to run it on the other one and it returns some other IP, I don't have now.
I have checked my DynIP account, there is info, that there is my current IP in their database.
Why on my computer this code returns always right IP. On other computers ping return always right actual IP. But threre is no garanty with the Java-Code on the other computers/servers. What can I do in this situation?
Thanks in advance.

I Think the other computer may not be performing a
DNS lookup. I used your code with a former employer
domain and it worked on both my laptop and my
desktop.
I traced the route to the domain and got back 20
hops.
Conversly, when I used the same procedure for my
registered DynDNS domain name, I never went past my
home router, which is configured to automatically
update the DynDNS record when my public IP changes.
So, in that line of thinking, I think the 'other
computer' is not getting the address for some reason,
or has a bogus host entry in the hosts file.
On another note, thats a nice little for loop you
have there. You do know about the
addr.getHostAddress() method dont you?
It makes life easier.
JJThanks JJ for your answer. It's much clearly for me now.
I can use addr.getHostAddress()I have just called it on the server, not at home. It shows wrong IP twice, so there is no HostAddress for the IP I got.
I know that this server run on Sun. There is the other one, with the same problem. Can you imagine my wounder, all worked fine and then I got error. I just couldn't imagine, what was wrong.
Sometimes it works, sometime not. Is there a way to get the real IP, if they don't have nslookup etc?

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ok I try:
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Hi,
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Hi Xuandao,
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Hi
You can use TDMS file format to save the data. I have attached a reference Vi.
On button click you can log the data or remove the case structure and continuous log the complete acquisition data.
Thanks and Regards
Himanshu Goyal
Thanks and Regards
Himanshu Goyal | LabVIEW Engineer- Power System Automation
Values that steer us ahead: Passion | Innovation | Ambition | Diligence | Teamwork
It Only gets BETTER!!!
Attachments:
Data Save in File.vi ‏35 KB

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Please Mark This As Answer if it solved your issue
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Visakh
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Function sometimes return wrong data

Hi all.
I have a very strange problem with a function. Situation is this: I have an application that handles processes. Each process have a number of steps that is arranged in a matrix like layout. User clicks a step to start/execute it.
Now in a list of current processes i want to have an indication of how "far" a process has reached so i created a function for that and included that in my processlist fetch.
gchs_user_process_steps is the table where the user data for the process step is
gchs_process_steps is the definition table of what steps a process has
gchs_steps is the definition table of all steps
The below function is supposed to return latest step user clicked in the display matrix. tier is used to store the column number and sortorder is the row number of any step user clicked.
CREATE OR REPLACE FUNCTION FN_REACHEDSTEP(p_user_process_id NUMBER)
RETURN VARCHAR IS
 ret VARCHAR(30);
 ret_id INTEGER;
 ret_num INTEGER;
BEGIN
 ret := '';
 ret_id := 0;
 ret_num := 0;
 BEGIN
SELECT substr(step_name,1,30),step_id,reached INTO ret,ret_id,ret_num
FROM (
SELECT a.*, rownum rnum
FROM (
 SELECT s.name AS step_name, ps.id AS step_id, max((ps.tier*1000)+ps.sortorder) AS reached
 FROM gchs_user_process_steps ups, gchs_process_steps ps, gchs_steps s
 WHERE ups.gchs_process_step_id=ps.id AND
 ps.gchs_step_id=s.id AND
 ups.gchs_user_process_id=p_user_process_id
 GROUP BY s.name,ps.id
 ORDER BY 3 DESC) a
WHERE rownum <= 1 )
WHERE rnum >= 1;
 EXCEPTION
 WHEN OTHERS THEN
 ret:='';
 END;
 RETURN ret;
 EXCEPTION
WHEN OTHERS THEN
 ret := '';
 RETURN ret;
END FN_REACHEDSTEP;
Now the problem is that the function sometimes return wrong value. The name of the step that is returned is not the one i get if i run the SQL by itself.
So doing a
SELECT substr(step_name,1,30),step_id,reached INTO ret,ret_id,ret_num
FROM (
SELECT a.*, rownum rnum
FROM (
 SELECT s.name AS step_name, ps.id AS step_id, max((ps.tier*1000)+ps.sortorder) AS reached
 FROM gchs_user_process_steps ups, gchs_process_steps ps, gchs_steps s
 WHERE ups.gchs_process_step_id=ps.id AND
 ps.gchs_step_id=s.id AND
 ups.gchs_user_process_id=21680
 GROUP BY s.name,ps.id
 ORDER BY 3 DESC) a
WHERE rownum <= 1 )
WHERE rnum >= 1;
and a
select fn_ReachedStep(21680) from dual;
will sometimes return different values.
So is the function fundamentally wrong or is there any cache or something that i've missed that could hold "old" function outputs or am i missing something else.
Thankful for any clues.
I'm using Oracle 10.2.0.1.0
Best regards
/Tomas
Edit: Here's some data that the system uses.
gchs_steps
ID NAME
10000 Step 1
10020 Step 2
10021 Step 3
10022 Step 4
10023 Step 5
10060 Step 6
10140 Step 7
gchs_process_steps
ID GCHS_STEP_ID TIER SORTORDER
10000 10000 0 1
10001 10020 1 1
10002 10021 1 2
10003 10022 2 1
10020 10023 3 5
10060 10060 3 4
10080 10140 3 2
10040 10040 3 3
10100 10160 4 3
10160 10220 4 2
11640 11640 3 1
11660 11660 0 6
11661 11661 0 7
11600 11600 0 4
11620 11620 4 1
gchs_user_process_steps
ID GCHS_USER_PROCESS_ID GCHS_PROCESS_STEP_ID
35541 21680 10002
38441 21680 10020
38440 21680 10000
52062 21680 10060
Relations beween table is
gchs_user_process_steps.gchs_process_step_id=gchs_process_steps.id
and
gchs_process_steps.gchs_step_id=gchs_steps.id
So doing the SQL alone will always return
SUBSTR(..) STEP_ID REACHED
Step 5 10020 3005
but executing the function sometimes returns
FN_REACHEDSTEP(21680)
Step 6
Also removing the rownum limits return and doing a
SELECT s.name AS step_name, ps.id AS step_id, max((ps.tier*1000)+ps.sortorder) AS reached
FROM gchs_user_process_steps ups, gchs_process_steps ps, gchs_steps s
WHERE ups.gchs_process_step_id=ps.id AND
ps.gchs_step_id=s.id AND
ups.gchs_user_process_id=21680
GROUP BY s.name,ps.id,ps.tier, ps.sortorder
ORDER BY 3 DESC
give this result
STEP_NAME STEP_ID REACHED
Step 5 10020 3005
Step 6 10060 3004
Step 3 10002 1002
Step 1 10000 1
Edited by: user4935832 on 2008-sep-19 01:38

ORDER BY 3 DESC) a
WHERE rownum <= 1 )
WHERE rnum >= 1;Just some thoughts.
1. You could replace "ORDER BY 3" by "ORDER BY reached"
2. the rownum <=1 and rnum>=1 will return only one row... I don't understand the second one.
Lastly, the difference might come from a duplicate value return by your MAX() function.
If there is two rows (or more) with same MAX, Oracle might return one row arbitrary.
To get the same row, you have to use some aggregation function like MAX() KEEP (DENSE_RANK LAST...).
Here a try for your query, obviously not tested :
SELECT max(substr(step_name,1,30)) keep (dense_rank last order by reached) as step_name,
 max(step_id) keep (dense_rank last order by reached,step_name) as step_id,
 max(reached) as reached
FROM (SELECT s.name AS step_name,
 ps.id AS step_id,
 max((ps.tier*1000)+ps.sortorder) AS reached
 FROM gchs_user_process_steps ups,
 gchs_process_steps ps,
 gchs_steps s
 WHERE ups.gchs_process_step_id=ps.id
 AND ps.gchs_step_id=s.id
 AND ups.gchs_user_process_id=21680
 GROUP BY s.name,ps.id) a;Nicolas.

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This issue is only for General format cells, I am getting correct id for Number format cells.
Below is the
Standard ECMA-376 Office Open XML File Formats specified set of implied cell formats for reference-
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0 General
1 0
2 0.00
3 #,##0
4 #,##0.00
9 0%
10 0.00%
11 0.00E+00
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13 # ??/??
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16 d-mmm
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The purpose of this forum is to support the Open Specifications documentation. You can read about the Microsoft Open Specifications program here,
http://www.microsoft.com/openspecifications/en/us/default.aspx
The library of Open Specification documents is located here,
http://msdn.microsoft.com/en-us/library/dd208104.aspx
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https://social.msdn.microsoft.com/Forums/office/en-US/home?forum=oxmlsdk
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Cross posted
[ASK]Bugs of Java or Wrong Code?
[HELP]Bugs of Java or Wrong Code?
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I got it worked with using DateFormat.parse !
The trick is to instantiate a new Date object as a result
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with below code :
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localCal.set(Calendar.YEAR, 2003);
localCal.set(Calendar.HOUR_OF_DAY,6);
localCal.set(Calendar.MINUTE, 38);
localCal.set(Calendar.SECOND, 11);
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int year = sinCal.get(Calendar.YEAR);
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time in SIN using Date.toString(): Fri Jul 25 21:38:11 PDT 2003
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 _pageCount = pageCount;
 public int print(java.awt.Graphics g, java.awt.print.PageFormat pf, int pageIndex)
 throws java.awt.print.PrinterException
 int drawX = 0, drawY = 0;
 double scaleRatio = 1;
 if (getCurrentPage() != (pageIndex - getPageOffset()))
 try
 setCurrentPage(pageIndex - getPageOffset());
 setImage(_reader.read(getCurrentPage()));
 setImgWidth(getImage().getWidth(null));
 setImgHeight(getImage().getHeight(null));
 catch (IndexOutOfBoundsException e)
 return NO_SUCH_PAGE;
 catch (IOException e)
 throw new PrinterException(e.getLocalizedMessage());
 if (!_isTiff && getImgWidth() > getImgHeight())
 pf.setOrientation(PageFormat.LANDSCAPE);
 else
 pf.setOrientation(PageFormat.PORTRAIT);
 Graphics2D g2 = (Graphics2D) g;
 g2.translate(pf.getImageableX(), pf.getImageableY());
 g2.setClip(0, 0, (int) pf.getImageableWidth(), (int) pf.getImageableHeight());
 scaleRatio =
 (double) ((getImgWidth() > getImgHeight())
 ? (pf.getImageableWidth() / getImgWidth())
 : (pf.getImageableHeight() / getImgHeight()));
 //check the scale ratio to make sure that we will not write something off the page
 if ((getImgWidth() * scaleRatio) > pf.getImageableWidth())
 scaleRatio = (pf.getImageableWidth() / getImgWidth());
 else if ((getImgHeight() * scaleRatio) > pf.getImageableHeight())
 scaleRatio = (pf.getImageableHeight() / getImgHeight());
 int drawWidth = getImgWidth();
 int drawHeight = getImgHeight();
 //center image
 if (scaleRatio < 1)
 drawX = (int) ((pf.getImageableWidth() - (getImgWidth() * scaleRatio)) / 2);
 drawY = (int) ((pf.getImageableHeight() - (getImgHeight() * scaleRatio)) / 2);
 drawWidth = (int) (getImgWidth() * scaleRatio);
 drawHeight = (int) (getImgHeight() * scaleRatio);
 else
 drawX = (int) (pf.getImageableWidth() - getImgWidth()) / 2;
 drawY = (int) (pf.getImageableHeight() - getImgHeight()) / 2;
 g2.drawImage(getImage(), drawX, drawY, drawWidth, drawHeight, null);
 g2.dispose();
 return PAGE_EXISTS;
 * 
 * Created By: TSO1207 - John Loyd
 * @since version XXX
 * @return
 public int getPageCount()
 return _pageCount;
 public void destroy()
 setImage(null);
 try
 _reader.reset();
 _reader.dispose();
 catch (Exception e)
 System.gc();
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @return
 public Image getImage()
 return _image;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @return
 public int getImgHeight()
 return _imgHeight;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @return
 public int getImgWidth()
 return _imgWidth;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @param image
 public void setImage(Image image)
 _image = image;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @param i
 public void setImgHeight(int i)
 _imgHeight = i;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @param i
 public void setImgWidth(int i)
 _imgWidth = i;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @return
 public int getCurrentPage()
 return _currentPage;
 * 
 * Created By: TSO1207 - John Loyd
 * @since Mar 25, 2008
 * @param i
 public void setCurrentPage(int i)
 _currentPage = i;
}Edited by: jloyd01 on Jul 3, 2008 8:26 AM

Figured it out. The files have a different vertical and horizontal resolutions. In this case the horizontal resolution is 200 DPI and the vertical is 100 DPI. The imgage width and height values are based on those resolution values. I wrote a section of code to take care of the problem (at least for TIFF 6.0)
 private void setPageSize(int pageNum) throws IOException
 IIOMetadata imageMetadata = _reader.getImageMetadata(pageNum);
 //Get the IFD (Image File Directory) which is the root of all the tags
 //for this image. From here we can get all the tags in the image.
 TIFFDirectory ifd = TIFFDirectory.createFromMetadata(imageMetadata);
 double xPixles = ifd.getTIFFField(256).getAsDouble(0);
 double yPixles = ifd.getTIFFField(257).getAsDouble(0);
 double xRes = ifd.getTIFFField(282).getAsDouble(0);
 double yres = ifd.getTIFFField(283).getAsDouble(0);
 int resUnits = ifd.getTIFFField(296).getAsInt(0);
 double imageWidth = xPixles / xRes;
 double imageHeight = yPixles / yres;
 //if units are in CM convert ot inches
 if (resUnits == 3)
 imageWidth = imageWidth * 0.3937;
 imageHeight = imageHeight * 0.3937;
 //convert to pixles in 72 DPI
 imageWidth = imageWidth * 72;
 imageHeight = imageHeight * 72;
 setImgWidth((int) Math.round(imageWidth));
 setImgHeight((int) Math.round(imageHeight));
 setImgAspectRatio(imageWidth / imageHeight);
 }

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