How to open a network file in java ?

File c = new File("directory");
like this ?
but how to define the directory ?

If the file is on a shared drive "mounted" as some local drive letter, you can use that drive letter, or you can use the UNC notation in Java as in any other program.
for Microsoft Windows platforms, the prefix of a pathname that contains a drive specifier consists of the drive letter followed by ":" and possibly followed by "\" if the pathname is absolute. The prefix of a UNC pathname is "\\"; the hostname and the share name are the first two names in the name sequence. A relative pathname that does not specify a drive has no prefix.

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How to open an existing file from java

Hi Guys,
I have one problem Please help me in this.
How to open file(i.e. file can be any type, it is may be image file, doc file or pdf file) using java.
Even i tryed in one way but it is static way that is working in windows not for other OS.
Code :
import java.io.*;
public class CmdExec {
public static void main(String argv[]) {
try {
     DataInputStream din=new DataInputStream(System.in);
     System.out.println("Enter File Path to Open");
     String fName=din.readLine();
     File file=new File(fName);
Runtime.getRuntime().exec("rundll32 SHELL32.DLL,ShellExec_RunDLL " + file.getAbsolutePath());
catch (Exception err) {
err.printStackTrace();
If any other way to do please tell me.
Regards
Siva Prasad

Well, if the OS doesn't provide a mechanism to associate a file name with a certain program, there's nothing you can do.
I don't know whether something like JDIC can help you - otherwise, you'd have to find the solution for each OS. What's inside the exec()'s parenthesisses is not a Java problem anymore.

How to open an PDF file from Java Application

Hi
I am developing a GUI application in java swing.
on clicking one button, I want to open PDF file from my swing application.
Is there any API through which I can achieve this?
Tapan Maru
Sun Certified Java Programmer

Here's a way to do it (if I understand you
correctly). Just let explorer.exe do it for you.
import java.awt.*;
public class openPDF
     Desktop desktop = Desktop.getDesktop();
     public openPDF()
          open("test.pdf");
     public void open(String path)
          try
               Runtime.getRuntime().exec("explorer.exe "+path);
} catch(Exception e) { System.out.println("NAI!
I! ERROR!\n"+e); }
     public static void main(String[] args)
          openPDF myApplication = new openPDF();
Why do you have a Desktop object as a member but instead of using it, you execute a command with Runtime (which is not platform independent!)???
-Puce

Acces to protected network files in java

Hi, I need to access files on a network (private LAN) via a java program.
I need to provide a username and a password in order to access these files, becouse they are not accessible by guests (Microsoft Windows 2000 network).
I saw Authenticator class and setDefault() method to provide username and password via getPasswordAuthentication() to an httpURLConnection: IT WORKS FINE, but unfortunately this is not an httpURLConnection...
So, I have to open a networked file, lets say :
java.io.File sourceFile = new File("\\\\MYSERVER\\MYSHARE\\HELLO.TXT");
and then read it, lets say :
java.io.FileInputStream in = new FileInputStream(sourceFile);
byte[] buffer = new byte[16384];
int len;
while ((len = in.read(buffer)) != -1) {
// do something
} // end of while
in.close();
I get a :
java.io.FileNotFoundException: \\MYSERVER\MYSHARE\HELLO.TXT (Access is denied)
How can I introduce a username and password in this context ?
thanks in advance,
Andrea

Windows file sharing networking is via SMB, which Java doesn't support. So, either make a native call (use JNI + C++) or implement SMB on TCP/IP in Java (not trivial - see Samba for details).

How to open a .JAR file on the Z30

Hi,
Would anyine know how to open a .JAR file on the Z30?
I get a message saying "Unable to open" when I click on the .jar file i want to open in my blackberry & install.
Cheers
Mario

JAR files are for older java phones, they dont work on BB10
maybe you should look into using SNAP to get some apps yoru looking for
http://supportforums.blackberry.com/t5/Downloaded-Applications-for/You-Upgraded-to-OS-10-2-1-and-wan...
Click here to Backup the data on your BlackBerry Device! It's important, and FREE!
Click "Accept as Solution" if your problem is solved. To give thanks, click thumbs up
Click to search the Knowledge Base at BTSC and click to Read The Fabulous Manuals
BESAdmin's, please make a signature with your BES environment info.
SIM Free BlackBerry Unlocking FAQ
Follow me on Twitter @knottyrope
Want to thank me? Buy my KnottyRope App here
BES 12 and BES 5.0.4 with Exchange 2010 and SQL 2012 Hyper V

How to open a log file form a frame in linux

Hy,
Can anyone knows how to open a pdf file in linux from java?? and also a conf file(when I try Runtime.getRuntime().exec("path") -gives me an error like -I don't have the right to open that file , how can I open that file as root??)
Thanks in advance

Are you familiar with java.awt.Desktop?
http://java.sun.com/javase/6/docs/api/java/awt/Desktop.html
Try its open() method.

How to open a local file from javascript in a jsp-page

Hi
I have created an iview from a PAR file. In the par file I have a jsp-page with some javascript code. From the javascript coe I want to open a new window with an Excel file.
I have tried window.open("c:
test.xls", "test_window"), but it doesn't seem to work. I have created a small HTML page locally with the same command and there a new window opens with the Excel file.
If I change the local file path with an URL it also works.
Any idea how to open a local file ?
Thanks
/Jakob

Jacob,
I'm not 100% (but 99,9%) and it has to do with security ristrictions of the browser not allowing to have local workstation interation from the web. This is ofcourse very dangerous if the browser would allow it... So therfore it is blocked. What if somone would point to a file/executable that formats your drive so for that reason it is not allowed to have web interaction with a local file. Only with Java Applets this is possible but still with many limitations, and what I remember Google Gears and Adobe Air do have some limited web 2 local file interaction... So best and most simple solution you are left with is pointing to a url instead of a file on a c:\ drive.
PS The reason why it works when you start the html from your local PC has todo with the fact that the browser detects that the html is not running in the web at that moment therefor allowing the access.
Cheers,
Benjamin Houttuin

How to open a pdf file in JFrame

hi to all,
i need to know how to open a pdf file in JFrame. Help is needed with this would grateful, and i used the code state below..
InputStream in=this.getClass().getResourceAsStream("/images/help1.pdf");
Process p = Runtime.getRuntime().exec(in);Thanks in Advance...

this is the error which i'm getting while executing the code
init:
deps-jar:
Compiling 1 source file to /home/VEL AREA/SampleApplication/build/classes
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:3: package com.sun.pdfview does not exist
import com.sun.pdfview.PDFFile;
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:4: package com.sun.pdfview does not exist
import com.sun.pdfview.PDFPage;
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:5: package com.sun.pdfview does not exist
import com.sun.pdfview.PagePanel;
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:25: cannot find symbol
symbol : class PagePanel
location: class sampleapplication.Main
PagePanel panel = new PagePanel();
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:25: cannot find symbol
symbol : class PagePanel
location: class sampleapplication.Main
PagePanel panel = new PagePanel();
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:36: cannot find symbol
symbol : class PDFFile
location: class sampleapplication.Main
PDFFile pdffile = new PDFFile(buf);
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:36: cannot find symbol
symbol : class PDFFile
location: class sampleapplication.Main
PDFFile pdffile = new PDFFile(buf);
/home/VEL AREA/SampleApplication/src/sampleapplication/Main.java:39: cannot find symbol
symbol : class PDFPage
location: class sampleapplication.Main
PDFPage page = pdffile.getPage(0);
8 errors
BUILD FAILED (total time: 2 seconds)
for the reply #4..

HOw to create a Batch file for java application and whats the use of this ?

HI,
How to create a Batch file for java application ?
And whats the use of creating batch file ?
Thanks in advance

First of all, you're OT.
Second, you can find this everywhere in the net.
If you got a manifest declaring main class (an classpath if needed), just create a file named whatever.bat, within same directory of jar file, containing:
javaw -jar ./WhateverTheNameOfYourJarIs.jar %*By the way, assuming a Windows OS, you can just double click the jar file (no batch is needed).
Otherwise use:
javaw -cp listOfJarsAndDirectoriesSeparedBySemiColon country/company/application/package/className %*Where 'country/company/application/package/' just stands for a package path using '/' as separator instead of '.'
Don't specify the .class extension.
Javaw only works on Windows (you asked for batch, I assumed .BAT, no .sh), in Linux please use java.exe (path may be needed, Windows doesn't need it 'cause java's executables are copied to system32 folder in order to be always available, see PATH environment variable if you don't know what I'm talking about) and use ':' as classpath (cp) separator.
The '%***' tail is there in order to pass all parameters, it only works on Windows, refer to your shell docs for other OSs (something like $* may work).
This way you have a command you can call to launch your code (instead of opening NetBeans just to see your app working). You could schedule tasks on it or just call it in any command prompt (hope you know what it is 'cause there have been people in this very same forum with no clue about it, if not just hold the 'Windows button' and press 'R', then type 'cmd' and run it).
Finally add dukes and give 'hem away.
Bye.

I can't open or save file with Java Web Start

Hi,
i can't open or save file with Java Web Start:
import java.io.*;
import java.util.*;
public class MetaDataFileCreator {
public String fileNameSpace = null;
public String fileName = null;
protected Properties file = null;
public MetaDataFileCreator(String fileNameSpace, String fileName) {
this.fileNameSpace = fileNameSpace;
this.fileName = fileName;
public void createMetaDataFile() {
try {
System.out.println("file METADATA");
ClassLoader cl = this.getClass().getClassLoader();
String nameFileMetaData = fileNameSpace + fileName + ".txt";
FileOutputStream fileOS = new FileOutputStream(cl.getResource(nameFileMetaData).getFile());
file = new Properties();
file.setProperty("aaaaa", "aaaa");
file.store(fileOS, "");
fileOS.close();
} catch (Exception e) {
System.out.println("Error writing metadata-file: " + e);
System.exit(1);
e.printStackTrace();
I have try also to open a file like this:
ClassLoader cl = this.getClass().getClassLoader();
file.load(cl.getResourceAsStream(nameFile));
also like this:
try {
fos = (FileOpenService)ServiceManager.lookup("javax.jnlp.FileOpenService");
fss = (FileSaveService)ServiceManager.lookup("javax.jnlp.FileSaveService");
} catch (UnavailableServiceException e) {
fss = null;
fos = null;
System.out.println("Error with JNLP");
System.exit(1);
if (fss != null && fos != null) {
try {
// get a FileContents object to work with from the
// FileOpenService
FileContents fc = fos.openFileDialog(null, null);
//FileContents newfc2 = fss.saveAsFileDialog(null, null, fc);
// get the OutputStream and write the file back out
if (fc.canWrite()) {
// don't append
os = fc.getOutputStream(false);
} catch (Exception e) {
e.printStackTrace();
also like this:
File f = new File((System.getProperty("user.home")+"x.txt").toString());
FileOutputStream fileX = new FileOutputStream(f);
OutputX = new PrintWriter(new BufferedWriter(new OutputStreamWriter(fileX, "UTF8")));
OutputX.println(....
but it doesn't work with Java Web Start.
Can someone help me?
How can I open or save file?
thank you.
Sebastiano

Did you specify <all-permissions/> in your JNLP file? Did you sign your code? What error are you getting?

How to open a doc file using jsp Anchor tag

when i am trying to open a doc file using a jsp it is opening with out proper alignment.
how to open a doc file with proper alignment using Anchor Tag in JSp Page

Hello!
Does some one of you had open a MS word file (.doc) in Java search for a token like [aToken] replace it with another text and then feed it to a stream of save it?
I want to build a servlet to open a well formatted and rich on media (images) ms word document search for tokens and replace them with information form a web form.
Any Ideas?
Thank you in advanced.

How to open a specific file in projector.

Hi to all
can any body tells me that how to open a specific file in
projector with an application not in browser????
and also want to add a button to mute the sound just like in
intros with fade in and out effect.
its urgent....
Thanks in advance

Hi,
You can use FlashJester JStart
http://jstart.flashjester.com
that will open up any file the has been associated in Window
Explorer.
Download a FREE evaluation copy and try it for yourself.
Please look at the example files given.
Regards
FlashJester Support Team
e. - [email protected]
w. -
http://www.flashjester.com
There is a very fine line between "hobby" and
"mental illness."

How to open a .MAT file in LABVIEW

Hey everyone,
I currently have a .MAT image file which I would like to open in LABVIEW to apply some image filters. However, I am unsure as to how to open the .MAT file in LABVIEW. Ideally I would like to be able to open the .MAT file without using matlab, and it seems the only way to accomplish this task is through the mathscript node. I have attached an example of the image im trying to open, as well as the LABVIEW program which I would like to use on the image. Thanks for the feedback! =]
Attachments:
MAT_Image_Adjust.zip ‏1779 KB

Hi Boiler,
1) Do you have a choice in the format you export your data from MATLAB?
"ASCII Format
Complete the following steps if you want to import or export data between LabVIEW and the MATLAB® environment, the process is straightforward as long as you are using ASCII format.
From the MATLAB® environment to LabVIEW
To save a vector or a matrix Xin ASCII format with tab delimiter, enter the following in the command window or m-script file in the MATLAB® environment:
>>SAVE filename X -ascii -double -tabs
This creates a file whose name is filename, and it contains the data X in ASCII format with a tab delimiter.
Import the file into LabVIEW using the Read From Spreadsheet File VI located on the Programming»File I/O palette.
2) Have you tried using the mathscript node? Did you get any errors?
"Binary Format
Complete the following steps if you want to import or export data between LabVIEW and MATLAB®.
From the MATLAB® environment to LabVIEW
To read a .mat file in LabVIEW would require a VI to parse the file. This may be easier if each variable is saved to a separate file.
" -- this was done here, no ideas if it still works,
I want to read a Matlab MAT file into labview
Hope this helps, James
Kind Regards
James Hillman
Applications Engineer 2008 to 2009 National Instruments UK & Ireland
Loughborough University UK - 2006 to 2011
Remember Kudos those who help!

I do not know how to open a folder, file !

Hi everyone,
I do not know how to open a folder, file or
a JavaScript program in photoshop cs4?
can you tell me how to proceed
Thank you

thank zhpingw
the script not function unfortunately
I had to go through to have a flash file. swf
I put in a url link
file. swf I was put in the palette and its works!
Download This file tutoweb. link . swf
requete content for Google find tuto a Photoshop !
Warning you change to script Google.fr for Google.uk in file .fla
Place to swf in your palet of configurator
Enjoy
http://rapidshare.com/files/390041665/Flash_CS4.rar

How to call a .bat file from java code?

How to call a .bat file from java code? and how can i pass parameters to that .bat file?
Thanks in advance

thanks for ur reply
but still i am getting the same error.
I am trying to run a .bat file of together tool, my code looks like below
import java.lang.Runtime;
import java.lang.Process;
import java.io.File;
class SysCall{
     public static void main(String args[]){
          String cmd="D://Borland//Together6.2//bin//Together.bat -script:com.togethersoft.modules.qa.QA -metrics out:D://MySamples//Metrics// -fmt:html D://Borland//Together6.2//samples//java//CashSales//CashSales.tpr";
          //String path="D://Borland//Together6.2//bin//Together.bat ";
          Runtime r= Runtime.getRuntime(); //Declare the system call
          try{
               System.out.println("Before batch is called");
               Process p=r.exec(cmd);
               System.out.println(" Exit value =" + p.exitValue());
               System.out.println("After batch is called");
          /*can produce errors which must be caught*/
          catch(Exception e) {
               e.printStackTrace();
               System.out.println (e.toString());
I am getting the below exception
Before batch is called
java.lang.IllegalThreadStateException: process has not exited
at java.lang.Win32Process.exitValue(Native Method)
at SysCall.main(SysCall.java:17)
java.lang.IllegalThreadStateException: process has not exited

How to open a network file in java ?

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