Problem with serial read and write-unable to refresh the port number

I use the advanced serail write and read example. Build the application, copy the application to another laptop with labview run time engine 2009 installed. And I connect my serial device via a serial to usb adaptor. The problem is that VISA source number is always com1, even I refresh it. But in my case the device via adpator should be com5. I can get the hyperterminal working using com5. Something must be wrong. The strange thing is that there are three laptops, I did the same processdure with each one, one of them are working, the other two won't. Anybody came cross same problems before? Many thanks.

Hi,
I think you didn't have installed the Visa Run time engine on this computer.
best regards,
V-F

Similar Messages

Problem with air read and write smb shared directory of file

hi, everyone.
I'm want to access smb directory of file,And to read and
write operation, I would like to ask how I should do?
Thanks!

You can't access any OS facility nor execute arbitrary command.
So the best solution is to mount samba directory BEFORE run your AIR application; you eventually can create a script that mount samba (and asks password) and then run you AIR application.
see
http://www.mikechambers.com/blog/2008/01/17/commandproxy-net-air-integration-proof-of-conc ept/
for a more complex solution.

Hot Data Block with concurrent read and write

Hi,
This is from ADDM Report.
FINDING 8: 2% impact (159 seconds)
A hot data block with concurrent read and write activity was found. The block
belongs to segment "SIEBEL.S_SRM_REQUEST" and is block 8138 in file 7.
RECOMMENDATION 1: Application Analysis, 2% benefit (159 seconds)
ACTION: Investigate application logic to find the cause of high
concurrent read and write activity to the data present in this block.
RELEVANT OBJECT: database block with object# 73759, file# 7 and
block# 8138
RATIONALE: The SQL statement with SQL_ID "f1dhpm6pnmmzq" spent
significant time on "buffer busy" waits for the hot block.
RELEVANT OBJECT: SQL statement with SQL_ID f1dhpm6pnmmzq
DELETE FROM SIEBEL.S_SRM_REQUEST WHERE ROW_ID = :B1
RECOMMENDATION 2: Schema, 2% benefit (159 seconds)
ACTION: Consider rebuilding the TABLE "SIEBEL.S_SRM_REQUEST" with object
id 73759 using a higher value for PCTFREE.
RELEVANT OBJECT: database object with id 73759
SYMPTOMS THAT LED TO THE FINDING:
SYMPTOM: Wait class "Concurrency" was consuming significant database
time. (4% impact [322 seconds])
what does it mean by hot block with concurrent read and write??
is rebuilding the table solves the problem as per addm report?

Hi,
You must suffer from buffer busy waits.
When a buffer is updated, the buffer will be latched, and other sessions can not read it or write it.
You must have multiple sessions reading and writing that one block.
Recommendation 2 results in fewer records per block, so less chance multiple sessions are modifying and reading 1 block. It will also result in a bigger table.
The recommendation doesn't make sense for tablespaces with segment storage management auto, as for those tablespaces pctfree does not apply.
Buffer busy waits will also occur if the blocksize of your database is set too high.
Sybrand Bakker
Senior Oracle DBA

Problem with Adobe Reader and IE

I'm using Vista Home Premium and IE9 with the latest Reader available. Starting yesterday, I cannot read PDF files on the web. This is a new problem. I tried to download newer versions of IE and the Reader, but both tell me I've got the newest versions I can use.
I have no problem with Firefox. Just IE. I prefer using IE. Can someone guide me -- without using technical language. Many thanks!!

Thanks for your input. I opened the standalone Adobe Reader X, clicked Edit, Preferences, Security, Advanced Preferences. Then clicked each of the 3 tabs on top, but nothing looked like "Protected Mode."
Then I went back and clicked Security (Enhanced) and unchecked Enable Enhanced Security. Tested this change, but I still get the gray screen and messages: "A problem has caused IE to close." "A problem with this website has caused IE to close and re-open the tab." I then went back and re-checked Enable Enhanced Security.
I should mention that I have used this particular website for about 10 years and never had a problem. But I now have the same problem with any online PDF that I try to open using IE.
Can you think of anything else? If not, here's my plan of attack. Please let me know if you think it will work.
1) Copy over all my favorite sites from IE to Firefox. (I've already started doing that.)
2) Uninstall IE and re-install it.
3) If I still have a problem, uninstall Adobe Reader and re-install it.
Do you think this will do the job if all else fails?
Many, many thanks for the time you have put into this.

How do I migrate files created in a Windows OS to a new external drive that is formatted as a MAC drive. I want to read and write these files back to the new drive.

How do I migrate files from an external hard drive created in a Windows OS to a new MAC external drive? I want to read and write these files to the new drive.

LKrzesowski wrote:
How do I migrate files from an external hard drive created in a Windows OS to a new MAC external drive? I want to read and write these files to the new drive.
If all you're trying to do is move the files from the Windows external to the Mac external, you can simply connect them both to the Mac and drag the files from the Windows drive to the Mac drive. If you want to move the files back and forth between them, you'll need to establish the format of the Windows external. Macs can read and write to FAT32 and exFAT (which can handle files larger than 4GB) formatted drives but can only read NTFS formatted drives without additional software. With the Windows drive connected, you can check its format with Disk Utility.

Java and Tomcat: Why do I need the port number when accessing Tomcat?

My ultimate goal is to setup a website that displays data from a database. I will use Java, Apache, Oracle, and whatever else I need to create a website the uses servlets, JavaServer Pages, and JDBC.
I�ve got four Pentium III computers:
1. Windows 2000 Server to be the web server (MyWebServer, IP = 10.10.1.1).
2. Windows 2000 Professional to be the database server (MyDatabaseServer, IP = 10.10.1.2).
3. Windows 2000 Professional that I use to develop and test (MyDeveloperPC, IP = 10.10.1.3).
4. Windows 2000 Professional that I use as a client to connect to the website (MyClientPC, IP = 10.10.1.4).
I installed Java Web Services Developer Pack on MyWebServer. It requires Java 2 Standard Edition (J2SE), so I installed that first. The files I downloaded and installed are as follows:
J2SE: j2sdk-1_4_0-rc-win.exe
JWSDP: jwsdp-1_0-ea1-win.exe
After installing these products, I set the environment variables as follows:
JAVA_HOME = c:\j2se
JWSDP_HOME = c:\jwsdp
Path = c:\j2se\bin;c:\jwsdp\bin; [and other previous statements]
On MyWebServer I start Tomcat (from the JWSDP menu option). It starts properly (as far as I can tell).
Then, from MyClientPC I open Internet Explorer and in the address box I type:
http://10.10.1.1
�The page cannot be displayed�.
I then try again and add the port number:
http://10.10.1.1:8080
This displays the page c:\jwsdp\webapps\root\index.html.
Here�s my question: Why do I have to enter the port number to get a page displayed? Do I have to have Apache HTTP Server running on MyWebServer to display pages without entering the port number?
Thanks for your help.

When you web server is running at the default Http Port, then you do not have to specify the port yourself.(The browser does it automatically)
So if you run your web server at port 80, then you will not have to specify the port explicitlyin the url.
If you want to use tomcat only as a jsp/servlet processing engine then install a web server (either IIS, or apache web server) and run it on port 80. (so that you dont have to specify the port)
Now configure tomcat to run as a servlet engine for this web server. for this refer to the tomcat documentation.
If you do not want to have an external webserver then you can configure tomcat itself to run at port 80 (in this case tomcat would do the work of both the web server as well as jsp/servlet engine... but this is not the setup for a production site). this can be done by changing the server.xml file in the conf directory of tomcat installation.
hope this helps.
regards,
Abhishek.

Problem With File Reading And Sorting

I'm having problems with a particular task. Here is what I have to do:
Write a program which reads 100 integers from a file. Store these integers
in an array in the order in whcih they are read. Print them to the screen.
Sort the integers in place using bubble sort. Print the sorted array to the
screen. Now implement the sieve of Eratosthenes to place all prime numbers
in an ArrayList. Print that list to the screen.
Here is the code I have so far:
import java.util.ArrayList;
import java.io.*;
public class Eratosthenes
    private ArrayList numbers;
    private String inputfile1 = "numbers.txt";
    public Eratosthenes()
        numbers = new ArrayList();
    public void readData()
        try {
            BufferedReader reader = new BufferedReader(new FileReader(inputfile1));
            for(int i = 1; i <= 100; i++) {
                String temp = reader.readLine();
                numbers.add();
        catch(Exception e)
This is the file reading part I have done but it doesn't recognise the line numbers.add() . It brings up the error - 'Cannot resolve symbol - method add(). Thats the first problem I have, can anyone see any way to fix it and to achieve the task. Also can someone help with the structure of a bubble sort method and a sieve of Eratosthenes method as I have no clue whatsoever. Any help will be greatly appreciated.

Ok, I've done that but I'm having another problem. When I'm printing an output to the screen, it prints 100 lines of integers and not 1 line of 100 integers. Can you see the problem in the code that is doing this?
import java.util.ArrayList;
import java.io.*;
public class Eratosthenes
    private ArrayList numbers;
    private String inputfile1 = "numbers.txt";
    public Eratosthenes()
        numbers = new ArrayList();
    public void readData()
        try {
            BufferedReader reader = new BufferedReader(new FileReader(inputfile1));
            for(int i = 1; i <= 100; i++) {
                String temp = reader.readLine();
                numbers.add(temp);
                System.out.println(numbers);
        catch(Exception e)
}

Problem with ImageIO.read and ImageReader JPG colors are distorted/wrong

(Using JDK 1.5)
ImageIO incorrectly reads some jpg images.
I have a jpg image that, when read by the ImageIO api, all the colors become reddish.
        try
            java.awt.image.BufferedImage bi = javax.imageio.ImageIO.read( new java.io.File("javabug.jpg") );
            javax.imageio.ImageIO.write( bi, "jpg", new java.io.File("badcolors.jpg") );
            javax.imageio.ImageIO.write( bi, "png", new java.io.File("badcolors.png") );
        catch ( java.io.IOException ioe )
            ioe.printStackTrace();
        }Why is this happening??? My guess is there is a problem with the ImageIO.read ?
the jpg can be downloaded at http://www.alwaysvip.com/javabug.jpg
<BufferedImage@11faace: type = 5 ColorModel: #pixelBits = 24 numComponents = 3 color space = java.awt.color.ICC_ColorSpace@1ebbfde transparency = 1 has alpha = false isAlphaPre = false ByteInterleavedRaster: width = 1691 height = 1269 #numDataElements 3 dataOff[0] = 2>
I have even tried creating a new buffered image but still have the same problem:
(suggested by http://forum.java.sun.com/thread.jspa?forumID=20&threadID=665585) "Java Forums - ImageIO: scaling and then saving to JPEG yields wrong colors"
        try
            java.awt.image.BufferedImage bi = javax.imageio.ImageIO.read( new java.io.File("javabug.jpg") );
            java.awt.image.BufferedImage out = new java.awt.image.BufferedImage( bi.getWidth(), bi.getHeight(), java.awt.image.BufferedImage.TYPE_INT_RGB );
            java.awt.Graphics2D g = out.createGraphics();
            g.drawRenderedImage(bi, null);
            g.dispose();
            javax.imageio.ImageIO.write( out, "jpg", new java.io.File("badcolors.jpg") );
        catch ( java.io.IOException ioe )
            ioe.printStackTrace();
        }I have used the following which works but does not use the ImageIO api. However, I tried using the ImageIO to write and it worked for writing which leads me to believe there is a problem with the reader.
(suggested by http://developers.sun.com/solaris/tech_topics/java/articles/awt.html "Server-Side AWT")
        try
            java.awt.Image image = new javax.swing.ImageIcon(java.awt.Toolkit.getDefaultToolkit().getImage("javabug.jpg")).getImage();
            java.awt.image.BufferedImage bufferedImage = new java.awt.image.BufferedImage( image.getWidth( null ), image.getHeight( null ), java.awt.image.BufferedImage.TYPE_INT_RGB );
            java.awt.Graphics g = bufferedImage.createGraphics();
            g.setColor( java.awt.Color.white );
            g.fillRect( 0, 0, image.getWidth( null ), image.getHeight( null ) );
            g.drawImage( image, 0, 0, null );
            g.dispose();
            com.sun.image.codec.jpeg.JPEGImageEncoder encoder = com.sun.image.codec.jpeg.JPEGCodec.createJPEGEncoder( new java.io.FileOutputStream( "goodcolors.jpg" ) );
            encoder.encode( bufferedImage );
            javax.imageio.ImageIO.write( bufferedImage, "jpg", new java.io.File("goodiocolors.jpg") );
            javax.imageio.ImageIO.write( bufferedImage, "png", new java.io.File("goodiocolors.png") );
        catch ( java.io.IOException ioe )
            ioe.printStackTrace();
        }BTW, the following does not work either:
            java.util.Iterator readers = javax.imageio.ImageIO.getImageReadersByFormatName( "jpg" );
            javax.imageio.ImageReader reader = ( javax.imageio.ImageReader ) readers.next();
            javax.imageio.stream.ImageInputStream iis = javax.imageio.ImageIO.createImageInputStream( new java.io.File("javabug.jpg") );
            reader.setInput( iis, true );
            java.awt.image.BufferedImage bufferedImage = reader.read( 0 );

I figured out the problem. It was an actual BUG in the JDK!
The code failed with the following JDKs:
java version "1.5.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_01-b08)
Java HotSpot(TM) Client VM (build 1.5.0_01-b08, mixed mode, sharing)
java version "1.5.0_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_03-b07)
Java HotSpot(TM) Client VM (build 1.5.0_03-b07, mixed mode)
The code ran sucessful with this JDK:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)
If you are using the ImageIO classes, I highly suggest you upgrade to the latest JDK.
Best,
Scott

Problems with Adobe Reader and Flash Player

I had an Adobe update last Monday and, ever since then, I can't view documents (eg credit card statements) on screen and sites that I previously visited regularly without problem suddenly say that I need to have Adobe Flash Player installed. I've downloaded Adobe Flash Player and it says it's installed correctly but when I return to the site, it still says I need Adobe Flash Player. I've also tried doing an uninstall first and then an instal but the same thing happens. I've run disk first aid and it found a problem with the Head which it fixed but I still can't open documents using Adobe in Safari. Adobe Plug ins tells me that the Internet Access plug in is not loaded but when I ran 'repair Adobe Reader installation", it said there were no missing components detected and repair was not needed. I don't know if it's relevant but I've been having problems with Safari for several weeks, quitting 3 or 4 times a day, mainly when I'm switching from Safari to another programme such as Entourage or Excel.
Message was edited by: Aileen2

Hi Carolyn
I don't think I made it clear on the original post that I'm having problems with both Adobe Reader AND Adobe Flash Player. Unfortunately, all the Adobe Reader sites are confidential so I can't give you an illustration on that but for the Adobe Flash Player, try www.jacquielawson.com/ - you can preview cards without being signed in. With the Adobe Reader problems, I get a picture of a blank 'piece of paper' with a small blue square in the top right hand corner that has a white question mark inside it. The first time this happened to me, I was on the UK Inland Revenue site trying to print out some end of year forms. I phoned the Revenue's helpline and they said to try doing a 'save as' to my desktop. It seemed bizarre - saving a blank piece of paper - but lo and behold, when I opened it on my desktop, the forms appeared exactly as normal. However, I've since tried this 'save as' technique with my credit card statement and I still get a blank piece of paper with a blue square and white question mark when I open the desktop copy.
Thanks for your help and patience. I really appreciate it.
Aileen

Problems with sort, search and write objects o an ArrayList

Hi
Lets say that i have two subclasses (the program is not finished so in the end it can be up to 34 classes) of an abstract superclass. I also got one class which basicly is a register in which i've created an ArrayList of the type <abstractClass>. This means that i store the two subclasses in the arrayList. no problems so far i think (at least eclipse doesn't mind).
1. now, i want to be able to sort the arrayList aswell as search thorugh it. I've tried Collections.sort(arrayList) but it doesn't work. So i have no idea how to solve that.
2.The search-method i made doesn't work as good as i hoped for either. I ask the user to first decide what to search for (choose subclass) and then input the same properties as the subclass we search for. I create a new object of the subclass with these inputs and try arrayList.contains(subClassObject)
it runs but it returns +"false"+ even if i create an object with the exact same properties.
3. If i want to write this arrayList to a txtFile so i can import it another time. Which is the best method? first i just thought i'd convert the arrayList to string and then print every single object to a textfile as strings. that worked but i have no good idea how to import that into the same arrayList later. Then i found ObjectOutputStream and import using inputStream.nextObject(). But that doesn't work :(
Any ideas?
Thank you!
Anton

lavalampan wrote:
Hi
Lets say that i have two subclasses (the program is not finished so in the end it can be up to 34 classes) of an abstract superclass. I also got one class which basicly is a register in which i've created an ArrayList of the type <abstractClass>. This means that i store the two subclasses in the arrayList. no problems so far i think (at least eclipse doesn't mind).
1. now, i want to be able to sort the arrayList aswell as search thorugh it. I've tried Collections.sort(arrayList) but it doesn't work. So i have no idea how to solve that. Create a custom comparator.
>
2.The search-method i made doesn't work as good as i hoped for either. I ask the user to first decide what to search for (choose subclass) and then input the same properties as the subclass we search for. I create a new object of the subclass with these inputs and try arrayList.contains(subClassObject)
it runs but it returns +"false"+ even if i create an object with the exact same properties.Implement hashCode and equals.
>
3. If i want to write this arrayList to a txtFile so i can import it another time. Which is the best method? first i just thought i'd convert the arrayList to string and then print every single object to a textfile as strings. that worked but i have no good idea how to import that into the same arrayList later. Then i found ObjectOutputStream and import using inputStream.nextObject(). But that doesn't work :(Depends on what your requirement is, but yes, Serialization might work for you. Your classes should in that case implement Serializable.
Kaj

Adobe Flash, latest version, is hitting the disk hundreds of times per second with disk reads and writes for no obvious reason. Is this normal? If not, ...

I am running Firefox 18 on Windows 7, all with latest updates. The Adobe Flash plugin (latest version) hits the disk with hundreds of reads and hundreds of writes each second. This seems to start as soon as cnn.com is loaded then as other sites are loaded it just gets worse. Any thoughts on what might be causing this? Is it normal? If not normal, how can I can stop it?

I do not really have any solid suggestions for this but
* 11.6.602.168 is now the latest version. You were using Flash 11.5 r502 <br />Have you now updated ?
* Hardware acceleration issues are sometimes resolved by upgrading Graphics drivers <br /> [[Upgrade your graphics drivers to use hardware acceleration and WebGL]]
Flash often causes issues with Firefox. From Flash 11.3 some Windows users were needing to disable Flash's ''protected mode''. Rather a longshot but it may be worth experimenting with the protected mode and trying turning it off.
* http://kb.mozillazine.org/Flash#Flash_Player_11.3_Protected_Mode_-_Windows
Potential workarounds would be
#look at the pageinfo media. Use Ctrl + I -> |Media| to see what is on the pages
# If you do not want that content to play automaticaly consider add-ons like http://noscript.net/ &/or [https://addons.mozilla.org/en-US/firefox/addon/flashblock/ Flashblock] or one of the related addons.

Problems with PDFs, Reader, and Printing

My web application exports PDF files using SQL Server Reporting Services. The exported PDF files are version 1.3 (supposedly compatible with Adobe Acrobat version 4 and higher). Previously I used Crystal Reports which output PDF files as version 1.2.
This switch to 1.3 has caused havoc with SOME of my ASP (application service provider) customers because if they use Adobe Reader 8 to print the PDFs then they get obscure printing errors (the header of one page prints and then a printed error message of ERROR: Undefined COMMAND: 1b&) with certain Xerox workgroup printers (and not with most other printers). If they use Adobe Reader 7, then they have no problems at all with ANY of the printers.
So, at its core, this is a problem somewhere with Adobe PDF files, PDF versions, printers and their drivers, and the latest version of Adobe Reader (8.1.2). I would like to think that the latest version of any software should work better and my customers won't have to go back to Adobe Reader 7.0 to print things.
Is this a bug in Adobe Reader 8.1.2? What are the workarounds?
Thanks for any help.

Not sure, but have you tried this patch: http://helpx.adobe.com/acrobat/kb/pdf-wont-print-reader-10.html ?

Problem with ImageIO.read and ImageReader GIF becomes dark

I am having problems with certain GIF images loading completely dark. I previously had problems with certain JPGs colors being distorted http://forum.java.sun.com/thread.jspa?threadID=713164&tstart=0. This was a problem in an old JDK.
Here is the code:
            java.awt.image.BufferedImage bufferedImage = javax.imageio.ImageIO.read( new java.io.File("javabug.gif") );
            System.out.println( bufferedImage );
            javax.imageio.ImageIO.write( bufferedImage, "jpg", new java.io.File("badcolors.jpg") );
            javax.imageio.ImageIO.write( bufferedImage, "png", new java.io.File("badcolors.png") );BufferedImage Read is:
BufferedImage@337838: type = 5 ColorModel: #pixelBits = 24 numComponents = 3 color space = java.awt.color.ICC_ColorSpace@119cca4 transparency = 1 has alpha = false isAlphaPre = false ByteInterleavedRaster: width = 1536 height = 1152 #numDataElements 3 dataOff[0] = 2
Here is the GIF
http://www.alwaysvip.com/javabug.gif
I am using jdk1.5.0_06
If I use java.awt.Toolkit.getDefaultToolkit().getImage instead of ImageIO.read, the problem no longer exists.
        java.awt.Image image = java.awt.Toolkit.getDefaultToolkit().getImage( file.toURL() );
        java.awt.MediaTracker mediaTracker = new java.awt.MediaTracker( new java.awt.Container() );
        mediaTracker.addImage( image, 0 );
        mediaTracker.waitForID( 0 );
        java.awt.image.BufferedImage bufferedImage = new java.awt.image.BufferedImage( image.getWidth( null ), image.getHeight( null ), java.awt.image.BufferedImage.TYPE_INT_RGB );
        java.awt.Graphics g = bufferedImage.createGraphics();
        g.setColor( java.awt.Color.white );
        g.fillRect( 0, 0, image.getWidth( null ), image.getHeight( null ) );
        g.drawImage( image, 0, 0, null );
        g.dispose();
        javax.imageio.ImageIO.write( bufferedImage, "jpg", new java.io.File("goodcolors.jpg") );
        javax.imageio.ImageIO.write( bufferedImage, "png", new java.io.File("goodcolors.png") );BufferedImage Read is:
BufferedImage@1bf216a: type = 1 DirectColorModel: rmask=ff0000 gmask=ff00 bmask=ff amask=0 IntegerInterleavedRaster: width = 1536 height = 1152 #Bands = 3 xOff = 0 yOff = 0 dataOffset[0] 0
Is this another bug in the JDK? Is there a possible workaround where I can still use ImageIO.read?

I figured out the problem. It was an actual BUG in the JDK!
The code failed with the following JDKs:
java version "1.5.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_01-b08)
Java HotSpot(TM) Client VM (build 1.5.0_01-b08, mixed mode, sharing)
java version "1.5.0_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_03-b07)
Java HotSpot(TM) Client VM (build 1.5.0_03-b07, mixed mode)
The code ran sucessful with this JDK:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)
If you are using the ImageIO classes, I highly suggest you upgrade to the latest JDK.
Best,
Scott

How can I read and write a Word document keeping the formatting properties

Hi everybody,
I am reading a word document and writting it into a XML document. I need to keep the text formatting. Which properties and how I
can access them using HWPF POI?

Note: I am already using HWPF POI with java to read the word document.

Problem with serialized objects and JWS

My JWS launched application fails when loading a serialized object that has been instatiated from a class not contained in the signed jar-file. Does anyone know why this happens and if there is some workaround for the problem?

Where is the class contained then?

Problem with serial read and write-unab​le to refresh the port number

Similar Messages

Maybe you are looking for

Problem with serial read and write-unable to refresh the port number