Puzzling Problem with getParameter
This is weird.. I shouldn't have any problems with getting the params I've set in the APPLET tag, right?
Well I do - and it's very annoying
Where I call it (in the constructor) the code looks like this:
if(getParameter("URL") != null)
myUrl = getParameter("URL");
When I run in the appletviewer, or try just opening the HTML page with a browser (IE), I get the
following error:
java.lang.NullPointerException
at java.applet.Applet.getParameter(Applet.java:158)
at Configur8Applet.<init>(Configur8Applet.java:32)
Line 32 is the first line of my submitted code
Heeeelp!
I don't know, but I'd expect that in the constructor the parameters aren't available yet. The applet environment has to instantiate your applet and then make the parameters available to it.
I'd suggest moving the troublesome code to the init() method.
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Advance level drawing problem with Jframe and JPanel need optimize sol?
Dear Experts,
I m trying to create a GUI for puzzle game following some kind of "game GUI template", but i have problems in that,so i tried to implement that in various ways after looking on internet and discussions about drawing gui in swing, but i have problem with both of these, may be i m doing some silly mistake, which is still out of my consideration. please have a look at these two and recommend me one of them, which is running without problems (flickring and when you enlarge window the board draw copies (tiled) everywhere,
Note: i don't want to inherit jpanel or Jframe
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public class GameMain extends JFrame {
private static final long serialVersionUID = 1L;
public int mX, mY;
int localpoints = 0;
protected static JTextField[][] squares;
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static final int CANVAS_HEIGHT = 600;
static final int UPDATE_RATE = 4; // number of game update per second
static State state; // current state of the game
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this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.pack();
this.setTitle("MY GAME");
this.setVisible(true);
public void gameInit() {
// Shutdown the game, clean up code that runs only once.
public void gameShutdown() {
// To start and re-start the game.
public void gameStart() {
private void gameLoop() {
public void keyPressed(KeyEvent e) {
public void keyTyped(KeyEvent e) {
public void gameKeyReleased(KeyEvent e) {
PuzzleBoard bd = getBoard();
for (int row = 0; row < 4; ++row) {
for (int col = 0; col < 4; ++col) {
if (e.getSource() == squares[row][col]) {
if (bd.isOpen(col, row)) {
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setStatus1(bd);
pickSquare1(col, row, squares[row][col].getText()
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System.out.println("Exception: " + e.getMessage());
e.printStackTrace();
System.exit(1);
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public void updateBoard(PuzzleBoard new_board) throws RemoteException {
String s1;
for (int row = 0; row < 4; ++row) {
for (int col = 0; col < 4; ++col) {
squares[row][col].setText(new_board.ownerStr(col, row));
lbl_score.setText("Highest Score = "
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setStatus1(new_board);
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boolean locals = bd.getHave_winner();
System.out.println("local win" + locals);
if (locals == true) {
localpoints++;
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lbl_scorelocal.setText("Your Score = " + localpoints);
lbl_score
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protected PuzzleBoard getBoard() {
PuzzleBoard res = null;
try {
res = remoteTTTBoard.getState();
} catch (RemoteException e) {
System.out.println("Exception: " + e.getMessage());
e.printStackTrace();
System.exit(1);
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/** Custom drawing panel (designed as an inner class). */
class GameCanvas extends JPanel implements KeyListener {
/** Custom drawing codes */
@Override
public void paintComponent(Graphics g) {
// setOpaque(false);
super.paintComponent(g);
// main box; everything placed in this
// JPanel box = new JPanel();
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
// add(statusLabel, BorderLayout.NORTH);
// set up the x's and o's
JPanel xs_and_os = new JPanel();
xs_and_os.setLayout(new GridLayout(5, 5, 0, 0));
squares = new JTextField[5][5];
for (int row = 0; row < 5; ++row) {
for (int col = 0; col < 5; ++col) {
squares[row][col] = new JTextField(1);
squares[row][col].addKeyListener(this);
if ((row == 0 && col == 1) || (row == 2 && col == 3)
|| (row == 1 && col == 4) || (row == 4 && col == 4)
|| (row == 4 && col == 0))
JPanel p = new JPanel(new BorderLayout());
JLabel label;
if (row == 0 && col == 1) {
label = new JLabel("1");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else if (row == 4 && col == 0) {// for two numbers or
// two
// blank box in on row
label = new JLabel("2");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else if (row == 1 && col == 4) {
label = new JLabel("3");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else if (row == 4) {
label = new JLabel("4");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
else {
label = new JLabel("5");
label.setHorizontalAlignment(JLabel.LEFT);
label.setVerticalAlignment(JLabel.TOP);
label.setOpaque(true);
label.setBackground(squares[row][col].getBackground());
label.setPreferredSize(new Dimension(label
.getPreferredSize().width, squares[row][col]
.getPreferredSize().height));
p.setBorder(squares[row][col].getBorder());
squares[row][col].setBorder(null);
p.add(label, BorderLayout.WEST);
p.add(squares[row][col], BorderLayout.CENTER);
xs_and_os.add(p);
} else if ((row == 2 && col == 1) || (row == 1 && col == 2)
|| (row == 3 && col == 3) || (row == 0 && col == 3)) {
xs_and_os.add(squares[row][col]);
// board[ row ][ col ].setEditable(false);
// board[ row ][ col ].setText("");
squares[row][col].setBackground(Color.RED);
squares[row][col].addKeyListener(this);
} else {
squares[row][col] = new JTextField(1);
// squares[row][col].addActionListener(this);
squares[row][col].addKeyListener(this);
xs_and_os.add(squares[row][col]);
this.add(xs_and_os);
this.add(statusLabel);
this.add(lbl_score);
this.add(lbl_scorelocal);
public void keyPressed(KeyEvent e) {
public void keyReleased(KeyEvent e) {
gameKeyReleased(e);
public void keyTyped(KeyEvent e) {
// main
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new GameMain();
thanks a lot for your time , consideration and efforts.
jibby
Edited by: jibbylala on Sep 20, 2010 6:06 PMjibbylala wrote:
thanks for mentioning as i wasn't able to write complete context here.Yep thanks camickr. I think that Darryl's succinct reply applies here as well. -
Rather odd problem with package naming...
Background info:
I'm working on a web-based application, on a Tomcat server. Classes (and packages) must be in a subfolder of WEB-INF/classes of the app's root. So the packages are in WEB-INF/classes/com/<package>.
The older packages are in com/gestion (for the package com.gestion ) and the newer ones are in com/incsolution/<various> where <various> can be either chart, util or pgm - following convention more closely.
OK! We have a class called SqlBean in com.gestion, which starts off like so:package com.gestion;
import java.sql.*;
import javax.sql.*;// stock pour pooled connection c'est dans javax.sql
import javax.naming.*;
import java.io.*;
public abstract class SqlBean
...rest of code...
}and is used in several other objects, like TransferQBean.java, which is in the same package:
package com.gestion;
import java.sql.*;
public class TransfertQBean extends SqlBean
...rest of code...
}Now, i've been working (with others) on this project for 2 years now, and up until last week, there was no problem with the way things were called. Come Monday (April 11), the classes won't compile any more - gives me this error:
classes/com/gestion/TransferQBean.java [5.1] cannot resolve symbol
symbol : class SqlBean
location: class com.geastion.TransferQBean
public class TransferQBean extends SqlBean
....................................................................^
Now if i add classes to com.gestion to get...
package classes.com.gestion;
import java.sql.*;
public class TransfertQBean extends SqlBean
rest of code...
}and same for SqlBean...
package classes.com.gestion;
import java.sql.*;
import javax.sql.*;// stock pour pooled connection c'est dans javax.sql
import javax.naming.*;
import java.io.*;
public abstract class SqlBean
...rest of code...
}...it works, but that's not how it's supposed to be. What puzzles me the most is how this came about suddenly.
Anyone have an idea what might be causing this? AFAIK, it's abnormal...
JHclasses/com/gestion/TransferQBean.java [5.1] cannot resolve symbol
symbol : class SqlBean
location: class com.geastion.TransferQBean
public class TransferQBean extends SqlBean
....................................................................^The solution to your problem is simply that your classpath is incorrect at compile-time. How you fix that depends on how you compile (from an IDE, from the command-line javac tool, etc). But whatever you do, don't make your solution depend on a system environment CLASSPATH variable. -
Problem with application server shutdown when connecting
Hi Friends,
I am new to J2EE applications.
I developed a web application that uses jxl and mysql for reading excel sheets. The host I am working on is supposed to be the server. The application I am running is working absolutely fine, by creating a directory and saving the excel file in my webapps folder and inserting the data to the database. But the minute I send the file from client system, there is a sudden shutdown in my server.
I am sending the jsp and java code related to this application and related log file..
I guess the main problem is with sending the exact path from the remote client, rest all is fine including excel and database interactions.
I commented the database interaction class just for now as I don't think there is a problem with it.
I am using Tomcat 4.1, MySQL 3.23
====================================================
JSP FILE
=====================================================
<%@ page language="java" import="pdss.*"%>
<html>
<head><title>File Upload</title></head>
<body>
<% String action=request.getParameter("go");
String message=request.getParameter("msg");
String str="";
if(message!=null)
str="Please enter valid filename!";
ExcelInteraction xlInt=new ExcelInteraction();
if(action==null)
%>
<center><font color="red"><%=str%></font></center>
<form name="myform" method="post">
<input type="file" name="filename"></input>
<input type="submit" name="go" value="Send">
</form>
<%
else if("send".equalsIgnoreCase(action))
String filename=request.getParameter("filename");
int ex=0;
System.out.println("************"+filename.endsWith(".xls"));
if(filename!=null && (filename.endsWith(".xls")))
ex=xlInt.fileTransfer(filename, getServletContext());
else if(filename==null || ("".equals(filename)) || filename.endsWith(".xls")==false)
response.sendRedirect("uploadFile.jsp?msg=a");
if(ex>0)
%> DONE
<% }
else
%> Data Inconsistency found
<% }
%>
</body>
</html>
======================================================
JAVA FILES
======================================================
ExcelInteraction:
package pdss;
import pdss.*;
import java.io.*;
import java.lang.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ExcelInteraction
//PDSSUtilities pdsUtil=new PDSSUtilities();
public int fileTransfer(String readFile, ServletContext app) throws Exception
int i=0, j=0;
String strDirectory = "pdssexcelfiles";
System.out.println("..............ReadFile..."+readFile);
File srcFile=new File(readFile);
System.out.println(".................Created source file."+srcFile.getAbsolutePath());
File destFile=null;
String newDirStr="",srcFileName="",destFileLoc="", realPath="";
try{
realPath=app.getRealPath("/");
System.out.println("newDirStr..........."+realPath);
newDirStr=realPath+strDirectory;
System.out.println("newDirStr..........."+newDirStr);
if((new File(newDirStr)).exists()==false)
boolean success = (new File(newDirStr)).mkdir();
System.out.println("....................success..."+success);
if (success) {
System.out.println(".................Directory...: " + strDirectory + " created");
srcFileName = srcFile.getName();
destFileLoc=newDirStr+"\\"+srcFileName;
System.out.println("DestFileLoc............"+destFileLoc);
if(srcFile.exists()){
destFile=new File(destFileLoc);
InputStream in = new FileInputStream(srcFile);
OutputStream out = new FileOutputStream(destFile);
byte[] buf = new byte[1024];
int len=0;
while ((len = in.read(buf)) > 0){
out.write(buf, 0, len);
in.close();
out.close();
System.out.println("............File copied to... "+destFile.getAbsolutePath());
System.out.println("......Closing Streams......");
/*if(destFile.exists())
j=pdsUtil.readXlData(destFileLoc);
System.out.println("..........j::"+j+"rows affected");
catch(Exception e)
e.printStackTrace();
System.exit(0);
return j;
=====================================================
LOG FILE FROM HOST SYSTEM:
=====================================================
2008-09-16 16:53:52 StandardContext[pdss]: Mapping contextPath='/pdss' with requestURI='/pdss/uploadFile.jsp' and relativeURI='/uploadFile.jsp'
2008-09-16 16:53:52 StandardContext[pdss]: Trying exact match
2008-09-16 16:53:52 StandardContext[pdss]: Trying prefix match
2008-09-16 16:53:52 StandardContext[pdss]: Trying extension match
2008-09-16 16:53:52 StandardContext[pdss]: Mapped to servlet 'jsp' with servlet path '/uploadFile.jsp' and path info 'null' and update=true
2008-09-16 16:54:01 StandardContext[pdss]: Mapping contextPath='/pdss' with requestURI='/pdss/uploadFile.jsp' and relativeURI='/uploadFile.jsp'
2008-09-16 16:54:01 StandardContext[pdss]: Trying exact match
2008-09-16 16:54:01 StandardContext[pdss]: Trying prefix match
2008-09-16 16:54:01 StandardContext[pdss]: Trying extension match
2008-09-16 16:54:01 StandardContext[pdss]: Mapped to servlet 'jsp' with servlet path '/uploadFile.jsp' and path info 'null' and update=true
=====================================================
LOG FILE FROM CLIENT SYSTEM:
2008-09-16 16:54:41 StandardContext[pdss]: Mapping contextPath='/pdss' with requestURI='/pdss/uploadFile.jsp' and relativeURI='/uploadFile.jsp'
2008-09-16 16:54:41 StandardContext[pdss]: Trying exact match
2008-09-16 16:54:41 StandardContext[pdss]: Trying prefix match
2008-09-16 16:54:41 StandardContext[pdss]: Trying extension match
2008-09-16 16:54:41 StandardContext[pdss]: Mapped to servlet 'jsp' with servlet path '/uploadFile.jsp' and path info 'null' and update=true
2008-09-16 16:54:42 StandardContext[pdss]: Stopping
2008-09-16 16:54:42 StandardContext[pdss]: Stopping filters
2008-09-16 16:54:42 StandardContext[pdss]: Processing standard container shutdown
2008-09-16 16:54:42 ContextConfig[pdss]: ContextConfig: Processing STOP
2008-09-16 16:54:42 StandardWrapper[pdss:jsp]: Waiting for 1 instance(s) to be deallocated
2008-09-16 16:54:42 StandardContext[pdss]: Sending application stop events
2008-09-16 16:54:42 StandardContext[pdss]: Stopping complete
=====================================================
Regards
VasumitraThe VERY FIRST message in the server log gives you a hint as to what the problem might be. The server thinks you have spaces in your PATH to the application server. Therefore, the solution is to kill the server however you need to (task manager, whatever) and then reinstall it in a path that doesn't contain spaces. That's the low-hanging fruit here; if that doesn't work, well, then we will have to find some other solution.
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Hi,
I am working on a JSP based website, where I am facing problem with sessions. The user is asked to login by providing her id and password. If found correct, a bean is created and populated with all her details and placed in session scope. I plan to use the information stored in the bean on other related pages until she logs out.
<jsp:useBean id="validUser" scope="session" class="UserBean" >
<c:set target="${validUser}" property="userId" value="${fn:trim(dbValues.UserId)}" />
<c:set target="${validUser}" property="userName" value="${fn:trim(dbValues.UserName)}" />
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<A HREF='userHome.jsp'>Home</A>
<A HREF='editPersonal.jsp'>Update Profile</A>
<A HREF='registrationFee.jsp'>Pay Registration Fees</A>
<A HREF='bookRoom.jsp'>Book Room</A>
<A HREF='logout.jsp'>Logout</A> The problems are:
1. Whenever user clicks on any of the above mentioned links and moves to any page, the bean comes out as null.
<%-- Verify that the user is logged in --%>
<c:if test="${validUser == null}">
<jsp:forward page="loginForm.jsp">
<jsp:param name="origURL" value="${pageContext.request.requestURL}" />
<jsp:param name="errorMsg" value="You must be logged in to access this site." />
</jsp:forward>
</c:if> 2. The URL shows an additional jsessionid, which my client doesn't want to see.
3. On every click on any link, the value of this jsessionid changes.
What I presume, when I am clicking on different links, my session changes, and so I am seeing a different jsessionid. And since session is changing, therefore the bean is not available in a different session.
All this works fine with localhost, problem comes into picture, when I upload my pages to the server.
Puzzled, can anyone help, where am I going wrong? Let me add here, I am new to JSP and hence don't have much resources with me.There are several ways sessions can be exchanged between the browser and the server in a j2ee web application.
1. The default is through cookies. However when the client does not accept cookies, the server appends the session id to the url.
2. Some servers also facilitate session information exchange using session id in the url even if the client does accept cookies. This is usually ahieved through a setting in some server configuration file.
You will have to find out why the server in your application is appending the session id to the url.
Whatever be the case, the server should be able to look up the session from the incoming request (be it from the session id in the url or a session cookie).
When session information is exchanged through the JSESSIONID in the url, you should ensure that each and every url that goes to the server has this input parameter. To do that all links and form post urls in your servlet/jsp should be treated with a call to encodeURL().
For example, in a jsp
<a href = "<%=response.encodeURL("/nextJsp.jsp")%>">Click here </a>
or
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Problem with JavaBeans in JSP.IT'S URGENT!!!
Hi, i have problems with JavaBeans in JSP.
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<jsp:useBean id="paramBean" class="licentza.ParamBean" />
<jsp:setProperty name="paramBean"
property="nume"
value='<%= request.getParameter("numeUser") %>' />
where ParamBean it's a "bean" class locating in jakarta-tomcat-4.0.6\webapps\examples\web-inf\classes\licentza (licentza is the package i'm using).
And i get this error:
Generated servlet error:
D:\jakarta-tomcat-4.0.6\work\Standalone\localhost\_\dora\intrare2$jsp.java:67: Class licentza.ParamBean not found.
ParamBean paramBean = null;
What is the problem?Thank you.Hi,
Put the class file or the package under :jakarta-tomcat-4.0.6\webapps\root\WEB-INF\classes.
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Problem with date format from Oracle DB
Hi,
I am facing a problem with date fields from Oracle DB sources. The date format of the field in DB table is 'Date base type is DATE and DDIC type is DATS'.
I mapped the date fields to Date characters in BI. Now the data that comes to PSA is in weird format. It shows like -0.PR.09-A
I have changing the field settings in DataSource to internal and external and also i have tried mapping these date fields to text fields with out luck. All delivers the same format.
I have also tried using conversion routines like, CONVERSION_EXIT_IDATE_INPUT to change format. It also delivers me the same old result.
If anybody of you have any suggestions or if anybody have you experienced such probelms, Please share your experience with me.
Thanks in advance.
Regards
VaradaThanks for all your reply. I can only the solutions creating view in database. I want some solution to be done in BI. I appreciate if some of you have idea in it.
The issue again in detail
I am facing an issue with date fields from oracle data. The data that is sent from Oracle is in the format is -0.AR.04-M. I am able to convert this date in BI with conversion routine in BI into format 04-MAR-0.
The problem is, I am getting data of length 10 (Output format) in the format -0.AR.04-M where the month is not in numericals. Since it is in text it is taking one character spacing more.
I have tried in different ways to convert and increased the length in BI, the result is same. I am wondering if we can change the date format in database.
I am in puzzle with the this date format. I have checked other Oracle DB connections data for date fields in BI, they get data in the format 20.081.031 which will allow to convert this in BI. Only from the system i am trying creating a problem.
Regards
Varada -
Problem with Vision Builder and LabView: Error -1074395995, File not found
I have created an inspection with Vision Builder AI 2009 SP1. In it I load some pictures from the HDD and run some checks over it. It works fine. Then I have migrated it to LabView 2010, I get a message that the migration is successfull, but when I run the VI on LabView I get a fail status. I have been checking my program and I have found and error when I try to load the picture from file: Error -1074395995 occurred at IMAQ ReadImageAndVisionInfo
Possible reason(s): IMAQ Vision: File not found.
But I am not sure which file it refers to. At first I thought it was the picture I wanted to load, but I have checked the path and it is correct, so maybe it refers to another thing. What puzzles me most is that it works perfectly on Vision Builder and I have changed nothing in LabView, maybe it is a problem with the migration. Any clues?Here's a screenshot of what I'm talking about. Put a break point here and see what the path is and compare that with what Vision Builder AI is using (described where to find this in the previous post). You could find where this global is used to make debugging easier.
Hope this helps,
Brad
Attachments:
Generated Code.png 43 KB -
Mapping problem with Wireless Keyboard and Japanese iPhone
Hi everyone:
This seems to be a slightly obscure question -- at least, I can't find a ready answer for it with the search terms I've tried, possibly because most people don't use this particular accessory with the iPhone.
I have an iPhone 4 that I bought from and use on Softbank, the carrier in Japan, where I live. While visiting the United States recently, I bought an Apple Wireless Keyboard from an Apple retailer. I wanted to carry it with me for use with my iPhone, so I would reliably have a convenient way to access the Internet without being confined to the touchscreen keyboard. (I live in a rural area where WiFi spots are uncommon, but my iPhone's access to Softbank's data network is fairly good and consistent.)
However, to my frustration, I can't use the keyboard due to a mapping problem. The Bluetooth connection is fine -- the iPhone can discover the keyboard. However, the mapping is off: typing "Q" gets me "A," typing "Z" gets me "W", numbers and punctuation are off, etc. The key point: This is NOT a problem with the International Keyboard settings (under the Settings -> General -> Keyboard -> International Keyboards menu). I have the Keyboard setting set to QWERTY, which is the layout of the Apple keyboard; I have tried all the other possibilities, just in case. None of them work. Setting the Keyboard setting to QWERTY does not make the external QWERTY keyboard map correctly.
The rather ironic addendum is this: While on a recent trip to Tokyo, I visited the Apple store in Shibuya and, after concluding the main business of my visit (discussing my MacBook's battery problems with an English-speaking staffer), I took out my iPhone and keyboard and asked him about my mapping problem. He started with the Keyboard menu, tried the same things I had tried, realized they weren't working, and puzzled over the problem for a while. Then he did this: He hit a key combination (I believe) that brought up a menu on the iPhone's screen. "Ah, there's your problem," he said, and selected a new setting. The problem was instantly fixed.
To my chagrin, however, I neglected to write down what "Ken" had done to fix the problem. Argh... I was looking at the iPhone upside-down; I'd already taken up more than half an hour; people were waiting, and I guess, being used to living in the countryside now, that I'm not used to Shibuya crowds any more. Anyway, I didn't take careful notes or ask him to walk me through it, and now I cannot recall or repeat what he did. And I still can't use my keyboard!
Any ideas or advice, anyone? How did "Ken" fix my problem, and how can I repeat it? Much, much appreciated, in advance.THAT'S IT. Sir, you have solved my problem. Thank you!!
And I feel a little silly; this will doubtless seem to an expert as if it should have been obvious all along. But isn't that always the way in hindsight?
Here's what happened: The key combination I was trying to remember was "Apple/command + space on the hardware keyboard," as you just said above. The "menu" it brings up is, apparently, a list of keyboards. I take it that this list is the same as the list of the "virtual" keyboards on the iPhone? I have never had more than one external keyboard -- the Apple Wireless -- but I do have several keyboards active virtually, as the iPhone in Japan seems to come with both the "Nihongo Ten-key" and the "Nihongo Romaji" keyboards active, and I added several other languages as well.
When I hit "Apple/command + space," this list comes up on the iPhone's touchscreen. Highlighted and checked at the top is "English," just as if it had been selected all along. But nonetheless, when I first turn on and pair my keyboard with the iPhone, I need to perform this key-combination action, as if to "reselect" English, and then the keyboard promptly starts working properly as QWERTY. I can only assume that one of the others had been default-selected before -- presumably one of the Nihongo ones? -- and that this was causing the interference.
Thank you again! You have made me and my wireless keyboard very happy. -
Unknown device - ipod nano fine - problem with windows xp and usb root hub
Greetings all. I've seen this question come up over and over again and have been working on it following previous posts and posts on microsoft and hp sites for a couple of days now.
First off - the ipod nano is fine. Works on my son's computer well.
When I plug it into my 6 months new HP Pavilion laptop it says: 'found new hardware' and goes through the process of installing it, says it's been installed, but then shows 'unknown device'. In Device Manager it tells me there are no drivers installed, but when I try to follow the other instructions on this forum to update the drive to USB mass storage device (usbstor.inf), it tells me the best driver is installed and won't do it.
Many seem to have this problem with devices other than the iPod on Windows service pack 2 so I went to the Microsoft forums and they seem just as puzzled. I've updated all my Windows & HP software to the latest possible versions. The problem is definitely in the USB. Once, when I uninstalled the USB device and then rebooted the computer with my iPod still plugged into the port, it found my iPod, correctly identified it, and for a blissful moment I thought everything was fine! Then it reinstalled the USB drivers and made a comment to the effect that I should move the iPod to a USB 2.0 port for more effective operation and the iPod disappeared again.
I have 3 USB ports on my laptop, all are USB 2.0 and all 3 have the same problem.
I've tried all the stuff people have already said on here...does anyone have any NEW ideas? I'm hesitant to take it in for service because it seems to be a software problem that should be fixable.
Thanks in advance for your help and sorry about the long post.This isn't a solution, but it's something I just tried and it may provide someone additional clues about's going on. I too think this is some sort of USB problem.
I have 6 USB ports. Two of them are USB 2.0. Since I applied the 03-23 update my computer hasn't recognized my nano at all. I would connect my nano and I couldn't get it to show up in My Computer, in iTunes, or on the far right side of the Start taskbar.
I just tried plugging my nano into the first USB port of my USB 2.0 pair and left the second 2.0 port empty. I then rebooted with the nano attached. Viola - I get a "Found New Hardware Apple iPod USB Device" message. My nano is now flashing "Do Not Disconnect." A small removeable storage icon with green arrow now shows on the far right side of the Start taskbar. If I click on it (like you're going to eject it) the note displayed says "Safely remove USB Mass Storage Device - Drive (F:)".
If I go into My Computer, "Removeable Disk (F:)" now shows there. However, if I try to follow Trevor's instructions in another post to "go into My Computer with iPod connected, right click it, wait till the right click menu comes up (could take a few minutes); click Format, . . ." I'm stuck. I do the right click, watch the hour glass and wait for the Format menu to come up but it never does. Eventually the hour glass just goes away. No message, no Format menu. The waiting hour glass just goes away.
My computer isn't as new as yours, but like you I am completely current on maintenance.
I'm going to keep trying . . . If anyone has any ideas, please let me know.
Dell Dimension 8100 Pentium 4 Windows XP Service Pack 2 Phoenix ROM Bios PLUS Version 1.10 A09 -
Hello all,
I am making a simple HttpServlet, which takes input
from html page and saves in to a file, but I'm having a
bit of a problem with file permissions.
I'm getting the following exception
java.security.AccessControlException: access denied (java.io.FilePermission ./data/result read)
java.security.AccessControlContext.checkPermission(AccessControlContext.java:264)
java.security.AccessController.checkPermission(AccessController.java:427)
java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
java.lang.SecurityManager.checkRead(SecurityManager.java:871)
java.io.File.exists(File.java:700)
SyksyHTTPServlet.doPost(SyksyHTTPServlet.java:31)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585)
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
java.security.AccessController.doPrivileged(Native Method)
javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:275)
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)The exception seems to occur when I'm trying to check whether the file already
exists or not.
The data directory has all permissions (read, write and execute) set for all users,
and I have made an empty file called result inside the data directory for testing.
This file has read and write permissions enabled for all users.
Here's my code
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.Enumeration;
import java.util.List;
import java.util.ArrayList;
public class SyksyHTTPServlet extends HttpServlet
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
int totalCount = 0;
List list;
String song = request.getParameter("song");
PrintWriter out = response.getWriter();
File file = new File("./data/result");
if(file.exists()) // this is line 31, which seems to cause the exception
list = readFile(file);
else
file.createNewFile();
list = new ArrayList();
list.add(song);
writeFile(file, list);
for(int i = 0 ; i < list.size() ; i++)
out.println(list.get(i));
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
doPost(request, response);
private List readFile(File file)
List list = null;
try
FileInputStream fis = new FileInputStream(file);
ObjectInputStream ois = new ObjectInputStream(fis);
list = (ArrayList)ois.readObject();
ois.close();
catch(Exception e)
e.printStackTrace();
return list;
private void writeFile(File file, List list)
try
FileOutputStream fos = new FileOutputStream(file);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(list);
oos.flush();
oos.close();
catch(Exception e)
e.printStackTrace();
}I'm using Tomcat 5.5 on Ubuntu Linux, if that has anything to do with this.
I'll appreciate all help.
kari-mattiHello again.
I'm still having problems with this. I made
a simple servlet that reads from and writes
to text file. The reading part work fine on my
computer, but the writing doesn't, not even
an exception is thrown if the file exists that
I'm trying to write to. If I try to create a new
file I'll get an exception about file permissions.
I also asked a friend of mine to try this same
servlet on his windows computer and it works
as it should.
Here's the code
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class ReadServlet extends HttpServlet
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
String s = "";
PrintWriter out = response.getWriter();
String docroot = getServletContext().getRealPath( "/" );
out.println("docroot: "+docroot);
File file = new File(docroot+"test.txt");
if(file.exists())
s = readFile(file);
out.println(s);
else
out.println("file not found");
//file.createNewFile(); // causes exception
//out.println("new file created.");
writeFile(file, "written by servlet");
out.println("Now look in the file "+file.getPath());
out.println("and see if it contains text 'written by servlet'");
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
doPost(request, response);
private String readFile(File file)
FileInputStream fis = null;
BufferedInputStream bis = null;
DataInputStream dis = null;
String s = "";
try
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
dis = new DataInputStream(bis);
s = dis.readLine();
fis.close();
bis.close();
dis.close();
catch(Exception e)
e.printStackTrace();
return s;
private void writeFile(File file, String s)
FileOutputStream fos = null;
BufferedOutputStream bos = null;
DataOutputStream dos = null;
try
fos = new FileOutputStream(file);
bos = new BufferedOutputStream(fos);
dos = new DataOutputStream(bos);
dos.writeChars(s);
fos.flush();
bos.flush();
dos.flush();
fos.close();
bos.close();
dos.close();
catch(Exception e)
e.printStackTrace();
}And if someone wants to test this servlet I can
give a war package.
Any advices?
kari-matti -
NT security problems with file I/O
I have 2 problems with file I/O. When I read from a file I use the getAbsolutePath() method that is part of the File class to find what directory the files are currenlty. The problem is that the returned path says that the file is on the desktop no matter what directory the file really is in. The second problem is that I am unable to save files anywhere but the desktop. I must run the class files from the desktop too to get it to work.
I am using NT 4.0 for development. I'm guessing that these problems might be NT security related. Could someone help me?
Code below:
import java.awt.*;
import java.applet.*;
import java.net.*;
import java.io.File;
import java.awt.event.*;
//import java.security.*;
//import sun.security.*;
//import java.awt.Window;
//import com.ms.security.*;
public class Edit extends Applet implements ActionListener, ItemListener
String Gselect;
reader readit;
int mhz, khz;
TextField textField1;
String freq = "000.000";
String data;
Choice freqC;
Button ActivateB, SaveB, /*CancelB, HelpB,*/ DeleteB;
Checkbox SetC;
int NotUsedReply[] = new int[200];
int HwListReply[] = new int[200];
public void init()
readit = new reader();
String myFile="satellite.st1";
// myFile = myFile.concat(Gselect);
File satellite = new File(myFile);
textField1 = new TextField();
textField1.setText( "(void) " );
add( textField1 );
SetC = new Checkbox("TRAP-RX");
add(SetC);
SetC.addItemListener(this);
freqC = new Choice();
freqC.setSize(20,50);
freqC.add("000.000");
add(freqC);
freqC.addItemListener(this);
ActivateB = new Button("Activate");
add(ActivateB);
ActivateB.addActionListener(this);
SaveB = new Button("Save");
add(SaveB);
SaveB.addActionListener(this);
DeleteB = new Button("Delete");
add(DeleteB);
DeleteB.addActionListener(this);
/*CancelB = new Button("Cancel");
add(CancelB);
CancelB.addActionListener(this);
HelpB = new Button("Help");
add(HelpB);
HelpB.addActionListener(this);*/
//textField1.setText( data );
for(int a = 1; a < 9; a++)
data = readit.getData(satellite.getAbsolutePath(), a);//("E:\\forte4j\\system\\Projects\\Zebra\\satellite.st1", a);
freqC.addItem(data);
textField1.setText(satellite.getAbsolutePath() );
public void paint(Graphics g)
//g.drawString("Radio Setup Files",20, 20);
//g.drawString(getParameter("wse"),20, 20);
public void actionPerformed(ActionEvent event)
if(event.getSource() == ActivateB)
activator();
if(event.getSource() == SaveB)
/*if(event.getSource() == CancelB)
stop();
if(event.getSource() == HelpB)
if(event.getSource() == DeleteB)
public void itemStateChanged(ItemEvent e)
if(e.getItemSelectable() == SetC)
textField1.setText("Check box 1 clicked!");
if(e.getItemSelectable() == freqC)
freq = ((Choice)e.getItemSelectable()).getSelectedItem();
public void activator()
makeMHZ();
makeKHZ();
if(mhz > 254)
int StartLink[]={0x0c,0x01,0x07,0x00,0x00,0x00,0x00,0x00,0x00}; //New Link Proc Start
int TrapConfig[]={0x25,0x80,0x00,0x00,0x00,0xb7,0x00,0x0c,0x0b, //TRAP Configuration
0x00,0x00,0x00,0xff,0xa0,0xff,0x0d,0xff,0xe8,
0xff,0x0d,0xff,0x00,0xff,0x15,0xff,0xb0,0xff,
0xff,0xff,0x94,0x0a,0x01,0x06,0x1a,0x00,0x0d,
0x2d,0x21};
TrapConfig[11]=(mhz-255);
TrapConfig[12]=(khz/5);
int SetUserOutput[]={0x41,0x42,0x49,0x54,0x52,0x41,0x50,0x20,0x34, //Sets User Output Format
0x35,0x34,0x35,0x30,0x30,0x2e,0x30,0x4e,0x30,
0x38,0x32,0x34,0x35,0x30,0x30,0x2e,0x30,0x57,
0x30,0x31,0x30,0x30,0x2e,0x30,0x30,0x4b,0x4d,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00};
sendget CmdFunc;
CmdFunc=new sendget();
try
//PolicyEngine.assertPermission(PermissionID.SYSTEM);
Socket h = new Socket("192.9.200.155",9000);
Socket s = new Socket("192.9.200.155",9001);
Socket t = new Socket("192.9.200.155",9002);
int j;
CmdFunc.SendCmd(h,0,0x01,null);
CmdFunc.GetCmd(h,HwListReply);
CmdFunc.SendCmd(s,9,0x1e,StartLink); //New Link Proc Start
CmdFunc.GetCmd(s,NotUsedReply);
CmdFunc.SendCmd(s,37,0x00,TrapConfig); //TRAP Configuration
CmdFunc.GetCmd(s,NotUsedReply);
CmdFunc.SendCmd(s,155,0x03,SetUserOutput);//Sets User Output Format
CmdFunc.GetCmd(s,NotUsedReply);
catch(Exception e){}
else
textField1.setText( "000.000 is the null choice. Try another." );
public void receiveText1( String select )
Gselect=select;
public void makeMHZ()
String y = freqC.getSelectedItem();
y = y.substring(0,3);
mhz = Integer.parseInt(y);
//textField1.setText( y );
public void makeKHZ()
String y = freqC.getSelectedItem();
y = y.substring(4,7);
khz = Integer.parseInt(y);
//textField1.setText( y );
import java.awt.*;
import java.applet.*;
import java.io.RandomAccessFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.LineNumberReader;
import java.awt.event.*;
import com.ms.security.*;
import netscape.security.*;
import netscape.util.*;
public class saver extends Applet implements ActionListener
String nameS = "Data.txt";
String dataS = "Default Data";
Button saveB;
public void init()
saveB = new Button("SaveFile");
add(saveB);
saveB.addActionListener(this);
public void actionPerformed(ActionEvent event)
if(event.getSource() == saveB)
RandomAccessFile RAF;
byte array0[] = dataS.getBytes();
try
if (Class.forName("com.ms.security.PolicyEngine") != null)
PolicyEngine.assertPermission(PermissionID.SYSTEM);
if(Class.forName("netscape.security.PrivilegeManager") != null)
netscape.security.PrivilegeManager.enablePrivilege("UniversalFileWrite");
catch (Throwable cnfe)
try
RAF = new RandomAccessFile(nameS, "rw");
// RAF.writeUTF(dataS);
RAF.write(dataS.getBytes());
RAF.close();
catch(Exception e)
public void receiveND(String name, String data)
if(name != null)
nameS = name;
dataS=data;
import java.io.RandomAccessFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.LineNumberReader;
//import java.security.*;
import com.ms.security.*;
import netscape.security.*;
import netscape.util.*;
public class reader
//Signature sig;
public String getData(String filename, int pass)
//String nameS = "Data.txt";
String dataS = "Default Data Sucks";
String comma = ",";
int get = pass, count=0, top=0, bottom=0;
char[] work;
try
if (Class.forName("com.ms.security.PolicyEngine") != null)
PolicyEngine.assertPermission(PermissionID.SYSTEM);
if(Class.forName("netscape.security.PrivilegeManager") != null)
netscape.security.PrivilegeManager.enablePrivilege("UniversalFileRead");
catch (Throwable cnfe)
try
//sig.sign();
//nameS = filename;
RandomAccessFile RAF = new RandomAccessFile(filename, "r");
// dataS = RAF.readUTF();
dataS = RAF.readLine();
RAF.close();
catch(Exception e)
return e.toString();
work = dataS.toCharArray();
for(int i = 0; i < dataS.length(); i++)
if( work[i] == ',' )
count++;
if(get == count)
bottom = i + 1;
if( (work[i] == ',') && (count > get) && (top == 0) )
top = i;
dataS = dataS.substring(bottom,top);
return dataS;
}import java.awt.*;
import java.applet.*;
import java.net.*;
import java.io.File;
import java.awt.event.*;
//import java.security.*;
//import sun.security.*;
//import java.awt.Window;
//import com.ms.security.*;
public class Edit extends Applet implements ActionListener, ItemListener
String Gselect;
reader readit;
int mhz, khz;
TextField textField1;
String freq = "000.000";
String data;
Choice freqC;
Button ActivateB, SaveB, /*CancelB, HelpB,*/ DeleteB;
Checkbox SetC;
int NotUsedReply[] = new int[200];
int HwListReply[] = new int[200];
public void init()
readit = new reader();
String myFile="satellite.st1";
// myFile = myFile.concat(Gselect);
File satellite = new File(myFile);
textField1 = new TextField();
textField1.setText( "(void) " );
add( textField1 );
SetC = new Checkbox("TRAP-RX");
add(SetC);
SetC.addItemListener(this);
freqC = new Choice();
freqC.setSize(20,50);
freqC.add("000.000");
add(freqC);
freqC.addItemListener(this);
ActivateB = new Button("Activate");
add(ActivateB);
ActivateB.addActionListener(this);
SaveB = new Button("Save");
add(SaveB);
SaveB.addActionListener(this);
DeleteB = new Button("Delete");
add(DeleteB);
DeleteB.addActionListener(this);
/*CancelB = new Button("Cancel");
add(CancelB);
CancelB.addActionListener(this);
HelpB = new Button("Help");
add(HelpB);
HelpB.addActionListener(this);*/
//textField1.setText( data );
for(int a = 1; a < 9; a++)
data = readit.getData(satellite.getAbsolutePath(), a);//("E:\\forte4j\\system\\Projects\\Zebra\\satellite.st1", a);
freqC.addItem(data);
textField1.setText(satellite.getAbsolutePath() );
public void paint(Graphics g)
//g.drawString("Radio Setup Files",20, 20);
//g.drawString(getParameter("wse"),20, 20);
public void actionPerformed(ActionEvent event)
if(event.getSource() == ActivateB)
activator();
if(event.getSource() == SaveB)
/*if(event.getSource() == CancelB)
stop();
if(event.getSource() == HelpB)
if(event.getSource() == DeleteB)
public void itemStateChanged(ItemEvent e)
if(e.getItemSelectable() == SetC)
textField1.setText("Check box 1 clicked!");
if(e.getItemSelectable() == freqC)
freq = ((Choice)e.getItemSelectable()).getSelectedItem();
public void activator()
makeMHZ();
makeKHZ();
if(mhz > 254)
int StartLink[]={0x0c,0x01,0x07,0x00,0x00,0x00,0x00,0x00,0x00}; //New Link Proc Start
int TrapConfig[]={0x25,0x80,0x00,0x00,0x00,0xb7,0x00,0x0c,0x0b, //TRAP Configuration
0x00,0x00,0x00,0xff,0xa0,0xff,0x0d,0xff,0xe8,
0xff,0x0d,0xff,0x00,0xff,0x15,0xff,0xb0,0xff,
0xff,0xff,0x94,0x0a,0x01,0x06,0x1a,0x00,0x0d,
0x2d,0x21};
TrapConfig[11]=(mhz-255);
TrapConfig[12]=(khz/5);
int SetUserOutput[]={0x41,0x42,0x49,0x54,0x52,0x41,0x50,0x20,0x34, //Sets User Output Format
0x35,0x34,0x35,0x30,0x30,0x2e,0x30,0x4e,0x30,
0x38,0x32,0x34,0x35,0x30,0x30,0x2e,0x30,0x57,
0x30,0x31,0x30,0x30,0x2e,0x30,0x30,0x4b,0x4d,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00};
sendget CmdFunc;
CmdFunc=new sendget();
try
//PolicyEngine.assertPermission(PermissionID.SYSTEM);
Socket h = new Socket("192.9.200.155",9000);
Socket s = new Socket("192.9.200.155",9001);
Socket t = new Socket("192.9.200.155",9002);
int j;
CmdFunc.SendCmd(h,0,0x01,null);
CmdFunc.GetCmd(h,HwListReply);
CmdFunc.SendCmd(s,9,0x1e,StartLink); //New Link Proc Start
CmdFunc.GetCmd(s,NotUsedReply);
CmdFunc.SendCmd(s,37,0x00,TrapConfig); //TRAP Configuration
CmdFunc.GetCmd(s,NotUsedReply);
CmdFunc.SendCmd(s,155,0x03,SetUserOutput);//Sets User Output Format
CmdFunc.GetCmd(s,NotUsedReply);
catch(Exception e){}
else
textField1.setText( "000.000 is the null choice. Try another." );
public void receiveText1( String select )
Gselect=select;
public void makeMHZ()
String y = freqC.getSelectedItem();
y = y.substring(0,3);
mhz = Integer.parseInt(y);
//textField1.setText( y );
public void makeKHZ()
String y = freqC.getSelectedItem();
y = y.substring(4,7);
khz = Integer.parseInt(y);
//textField1.setText( y );
import java.awt.*;
import java.applet.*;
import java.io.RandomAccessFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.LineNumberReader;
import java.awt.event.*;
import com.ms.security.*;
import netscape.security.*;
import netscape.util.*;
public class saver extends Applet implements ActionListener
String nameS = "Data.txt";
String dataS = "Default Data";
Button saveB;
public void init()
saveB = new Button("SaveFile");
add(saveB);
saveB.addActionListener(this);
public void actionPerformed(ActionEvent event)
if(event.getSource() == saveB)
RandomAccessFile RAF;
byte array0[] = dataS.getBytes();
try
if (Class.forName("com.ms.security.PolicyEngine") != null)
PolicyEngine.assertPermission(PermissionID.SYSTEM);
if(Class.forName("netscape.security.PrivilegeManager") != null)
netscape.security.PrivilegeManager.enablePrivilege("UniversalFileWrite");
catch (Throwable cnfe)
try
RAF = new RandomAccessFile(nameS, "rw");
// RAF.writeUTF(dataS);
RAF.write(dataS.getBytes());
RAF.close();
catch(Exception e)
public void receiveND(String name, String data)
if(name != null)
nameS = name;
dataS=data;
import java.io.RandomAccessFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.LineNumberReader;
//import java.security.*;
import com.ms.security.*;
import netscape.security.*;
import netscape.util.*;
public class reader
//Signature sig;
public String getData(String filename, int pass)
//String nameS = "Data.txt";
String dataS = "Default Data Sucks";
String comma = ",";
int get = pass, count=0, top=0, bottom=0;
char[] work;
try
if (Class.forName("com.ms.security.PolicyEngine") != null)
PolicyEngine.assertPermission(PermissionID.SYSTEM);
if(Class.forName("netscape.security.PrivilegeManager") != null)
netscape.security.PrivilegeManager.enablePrivilege("UniversalFileRead");
catch (Throwable cnfe)
try
//sig.sign();
//nameS = filename;
RandomAccessFile RAF = new RandomAccessFile(filename, "r");
// dataS = RAF.readUTF();
dataS = RAF.readLine();
RAF.close();
catch(Exception e)
return e.toString();
work = dataS.toCharArray();
for(int i = 0; i < dataS.length(); i++)
if( work == ',' )
count++;
if(get == count)
bottom = i + 1;
if( (work == ',') && (count > get) && (top == 0) )
top = i;
dataS = dataS.substring(bottom,top);
return dataS; -
Problem with web.show_document with Jinitiator and Firefox
Not sure Firefox 2.0 is officially certified with Forms 9.0.4.1 and Jinitiatorbut regardless we have some users who want to use this combination. Everything seems to work fine except for the calls to web.show_document which opens a new browser window and displays some html etc.
The problem is that even though the client Forms JVM is Jinitiator (1.3.1.18 or .21) when the call to web.show_document occurs somehow the Sun Java Plugin starts and having the two JVM's at once causes a fatal crash in Firefox. Can anyone suggest a way to preven the second JVM from opening?
When the user uses the Sun Plug as the client Forms JVM there is no problem as the second JVM does not open. Unfortunately some users insist on Jinitiator with Firefox hence the problem. -quinnJames,
This whole applet embedded in a browser model for webforms is driving us batty at times. The list of problems includes:
1) Users are constantly tempted by browser controls and accidentally do all sorts of things to get them in trouble. This has included but not limited to using the navigation arrows, jumping off to read their email in the same window as the form and returning to a dead forms session, minimizing, resizing, blurring off to another window and then returning back by clicking on the title bar of the browser and wondering why the form doesn't tab etc.
Sure hobbling the browser by opening with limited functionality is a possibility but not a complete solution.
2) New versions of browsers seem to break something. Both IE 7 and Firefox 2 have their own problems with web.show_document, especially file associations such as CSV and DBF and trying to open things in Excel in IE7.Firefox seems to have less problems for some yet some some oddities like the one that started this thread (and 2.0 opening new windows in tabs by default instead of windows).
3) JVM jigsaw puzzle. Is it Jinit or Sun, which versions? Which combinations of browser version and JVM works.
4) General fragility of the whole architecture. Running a client JVM in a web browser on top of a PC Operating system connectiong to a forms server over a network embedded in a Java Container server on a full blown web server running on a unix operating system is pushing the bubble. Throw in the mix that any of these components can be combined in numerous ways makes one wonder how it works as well as it does.
Still users randomly getting dropped connections to forms server (network gltches?). General sluggishness (poorly written forms?). Periods of users with unduplicatable errors primarily network related it would appear.
General feel that it is not rock solid stable. Perusing metalink documents on performance and tuning gives too much and too general info to troubleshoot so just shrug shoulders and say 'network problem'.
What's the solution? Java webstart would seem to help at least with the browser realted issues but is that supported and documented how to use yet. Also we'd lose web_show_document which is critical (could it be replaced by webutil calls to open browser?).
-quinn -
Problem with viewing Adobe PDF documents
Problem with viewing Adobe PDF documents
I have a Windows 7 Home Premium Computer
I have read all the suggestions and I have tried downloading multiple versions of Adobe Reader for Windows 7 and Vista from http://get.adobe.com/reader/otherversions/.
Prior to downloading each version I would delete the current version using control panel programs uninstall.
After each new installation I would shut down the computer and then restart the computer.
I have tried downloading versions with and without having my antivirus (CA Total Defence) running.
I am told after download that the version downloaded successfully.
I have read Acrobat Help http://helpx.adobe.com/acrobat/kb/troubleshoot-reader-installation-windows.html and followed the instructions.
None of the above has helped.
The problem is no matter what version of Adobe Reader I download, I cannot seem to open a PDF and read it. Nor will the Reader itself stay open.
1. If I try opening the reader from the desktop link or from the actual program menu, the reader opens for about 5 seconds and then closes of its own accord. If I try to click on any of the reader menus (eg File, Edit, View, Window, Help, Tools) then a warning bell is sounded and the menu does not open. Shortly thereafter the reader closes.
2. If I try to open the reader by double clicking on a PDF document then the reader opens but the document is not shown (only the grey PDF reader screen is shown) and then the reader closes after about 5 seconds of its own accord.
The desktop shortcut shows as the 'red Adobe Reader icon'. But the actual program menu icon shows as a blank folder icon. All PDF documents show as the PDF Adobe icon.
I have tested various PDFs and none will open on this computer but they will open on other computers.
I have created a word document and saved it as a PDF. It looked like it had save correctly (has the appropriate icon) but when I try to open it as per step 2 above then the document is not shown and then the reader closes after about 5 seconds of its own accord.
Does anyone have any ideas about what is going on and how I can fix this?
Could you please answer in this forum and email me at [removed]
I am so puzzled and frustrated.Thank you so much this did the trick.
I spent so many hours on trying to sort this out and your answer was so simple and clear.
Regards
Kazzamday
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