Deleting file from .jar file

I m having trouble with the Forum search, so sorry if this question has been answered before in this forum.
If I create a .jar (or an .ear) file, then open the file using Winzip and then delete a file from the zip, does it corrupt the .jar file? I ran into such a problem recently where I could not deploy the application because the .ear file still contained references to the deleted file.

No, Winzip doesn't corrupt jar files. But if you have something else that expects to find X in the jar file and you deleted X, it isn't surprising that problems arise.

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How to list files from .jar file in applet?

I have created applet and export all files to .jar file.
I use File.list() method in applet to list files from one directory and that works ok but if I try to do that from web browser it sends exception AccessDenied meaning that File.list() isn't allowed in browser.
I know what's the problem but I don't know how to solve it.
What I want is to read from directory list of files.
Help anyone?

I will post here my code so that can be seen what I want to do:
import java.awt.BorderLayout;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URLClassLoader;
import java.nio.charset.Charset;
import javax.swing.JApplet;
import javax.swing.JPanel;
import javax.swing.JTextPane;
public class test extends JApplet {
 private static final long serialVersionUID = 1L;
 private JPanel jContentPane = null;
 private JTextPane jTextPane = null;
 * This is the xxx default constructor
 public test() {
 super();
 * This method initializes this
 * @return void
 public void init() {
 this.setSize(449, 317);
 this.setContentPane(getJContentPane());
 * This method initializes jContentPane
 * @return javax.swing.JPanel
 private JPanel getJContentPane() {
 if (jContentPane == null) {
 jContentPane = new JPanel();
 jContentPane.setLayout(new BorderLayout());
 jContentPane.add(getJTextPane(), BorderLayout.CENTER);
 return jContentPane;
 * This method initializes jTextPane
 * @return javax.swing.JTextPane
 private JTextPane getJTextPane() {
 if (jTextPane == null) {
 jTextPane = new JTextPane();
 return jTextPane;
 public void start(){
 File fileDir= new File("somedirectory");
 String strFiles[]= fileDir.list();
 String a="";
 for(int i =0;i<strFiles.length;i++){
 a=a+strFiles;
 this.jTextPane.setText(a);
Method init() is irelevant, it just adds JTextPane in applet.
Method start() is relevant, it runs normaly when started from Eclipse but from browser it sends exception AccessDenied.

Accessing files from jar file when running application?

I have an application that when run should read an xml file (test.xml) from a jar file located in a resource folder. I do this:
    File f = null;
    URL url = this.getClass().getClassLoader().getResource("test.xml");
    try {
      f = new File(url.getPath());
//      f = new File(url.toURI());
    } catch (Exception e) {
      throw new GeneratorException("Preload input not found!");
    }The file is found in the jar but when I want to use it I get problems:
when doing:
f = new File(url.getPath());
this file is not found and when doing:
f = new File(url.toURI());
I get and:
URI is not hierarchical exception
Is there now way to convert the xml file in the jar file to a File object?

fedevaps wrote:
But is there now otherway to create a File from the URL?Only if the URL refers to a file in the first place. Which it doesn't when the URL refers to an entry in a ZIP file because an entry in a ZIP file is not a file.
java.io.File refers to physical files in the sense that the operating system uses it. It can't refer to Files on remote machines, it can't refer to "files" stored in .ZIP files and it can't refer to some random String that you construct.
Usually when you think you need a File object in Java, you don't actually need it. There are only a handful of operations that you can do with a File object that can't be done with a URL as well (deleting, renaming are two that come to my mind). Reading from it and writing to it works with a File as well as with an URL.

Can i load and run .exe file from jar file??

I generated a .jar file witch contain an executable (.exe file) under a directory called 'exec'. I can't execute this exe file using
URL urlExecutable = DlgueLancement.class.getResource("/exec/myPrograme.exe");

import java.io.*;
import java.util.jar.*;
import java.util.zip.*;
public class Extracter
    public static File extract(File archive, String filename, File target) throws IOException, ZipException
        if( archive == null )
            throw new IllegalArgumentException("Null archive file");
        if( !archive.exists() )
            throw new IllegalArgumentException("Specified archive does not exists");
        if( !archive.isFile() )
            throw new IllegalArgumentException("Specified archive file is not a file");
        if( filename == null )
            throw new IllegalArgumentException("Null filename");
        if( filename.length() == 0 )
            throw new IllegalArgumentException("Empty filename");
        if( target == null )
            throw new IllegalArgumentException("Null target");
        if( target.exists() && file.length() > 0 )
            throw new IllegalArgumentException("Target file already exists and cannot be overwritten");
        JarFile jar_archive = new JarFile(archive);
        ZipEntry entry      = jar_archive.getEntry(filename);
        if( entry == null )
            return null;
        InputStream istream = null;
        FileOutputStream ostream = null;
        try
            istream = jar_archive.getInputStream(entry);
            if( istream.available() == 0 )
                return null;
            byte[] buffer = new byte[istream.available()];
            istream.read(buffer);
            ostream = new FileOutputStream(target);
            ostream.write(buffer);
            return target;
        finally
            if( istream != null )
                try{istream.close();}catch(Exception e){}
            if( ostream != null )
                try{ostream.close();}catch(Exception e){}
}

How to delete data from flat file ?

Hi all,
I deleted a record from a tables and I want to delete it from data file.
Can I do it ?
Pls help me !

What do you mean by deleting it from datafile ?, Is it flat file or something else you want to ask? I believe you have records in flat files and you want to delete them as soon as you load them into oracle table.Oracle dosent offer such facility, however you can syncronise your tables and flat file contents by using merge statements and update it in a fashion, so that only records which reflects in flat files syncronises with table in oracle database .
hare krishna
Alok

To delete Data From a file

i want to delete lines from a file after reading the line. the next time i read the file i should find a unread line as the 1st line of the file.
how do i do tat? this is very similar to delete from table name query in sql. but i have to do this with java and txt files. how do i code this??

You can't delete part of a file. The way to do that in general is like this:
1. Read a line.
2. If you want to delete it, do nothing. Otherwise write it to a new file.
3. Repeat until end-of-file.
After you've finished all that, the new file will contain everything you didn't want to delete. Now delete the original file and rename the new file to have its name.

Deleting data from text files

Hi there,
I am having a real battle trying to delete data from a text file I am using. There seems to be this giant cloud with Java, where there is no real easy way to delete text from a file??
I have a JFrame with two textfields on it where you enter the username and pcname. There is a OK button once you have entered those details.
On action event I would like those two details, to be removed from the text file that has been read in.
I have a text file like this:
bob
pc1
bill
pc2
The data above gets written no problem, one at at a time using the below.
File f = new File("\\c:\\filename.txt");
String strToWrite;
try
FileOutputStream fstr = new FileOutputStream(f);
strToWrite = username1+ '\r'+'\n' ;
byte[] bytes = strToWrite.getBytes(); fstr.write(bytes);
strToWrite = pcname1 + '\r'+'\n' ;
byte[] bytes2 = strToWrite.getBytes(); fstr.write(bytes2);
strToWrite = username2+ '\r' +'\n' ;
byte[] bytes3 = strToWrite.getBytes(); fstr.write(bytes3);
strToWrite = pcname2 + '\r'+'\n' ;
byte[] bytes4 = strToWrite.getBytes(); fstr.write(bytes4);
catch (IOException e)
System.out.println("Error -- " + e.toString());
To read them back in I have made the follwoing:
BufferedReader br= null;
Count = 0;
try
br = new BufferedReader(new InputStreamReader(new FileInputStream("\\c:\\filename.txt")));
String s = "";
while((s=br.readLine()) != null )
Count = 1;
     //System.out.println("Data is " + s);
     inboundtext = s;
     if ( Count == 1 )
break;
while((s=br.readLine()) != null )
//System.out.println("Data is " + s);
inboundtext = s;
Count = 2;
if ( Count == 2 )
break;
catch(IOException ie)
finally
try
     if(br!=null) br.close();
catch(Exception e)
Now the above I know, is reading each line of the text file one at a time.
Now what I would like is that when the text that we got from the textfields, using getText(), be removed from the file without destroying the rest of the records in there? Why is it so easy to add and replace files, but not do any deleting from them?
please help!!

sorry, FileOutputStream fstr = new FileOutputStream(f);
should be FileOutputStream fstr = new FileOutputStream(f, true);

SQL Server 2012 Developer Edition will not install. Setup files don't even get copied completely. Win 8.1. ACT instance is loaded & can't be deleted. From log file: Error: Action "PreMsiTimingConfigAction" failed during execution.

SQL Server 2012 Developer Edition will not install. Setup files don't even get copied completely. Win 8.1. ACT instance is loaded & can't be deleted. From log file: Error: Action "PreMsiTimingConfigAction" failed during execution.

Hello,
I am glad it worked.
Thank you for visiting MSDN forums!
Regards,
Alberto Morillo
SQLCoffee.com

Problem loading Applets from Jar files on 64 bit machine

I am developing an applet (extends Applet but uses swing components) using JDK 1.6 (Though these problems still happen in JDK 1.7) and I am unable to get the applet to load on a 64 bit machine in most cases. The web server(s) are running on localhost and I am connecting on the same machine using a local network ip address (such as 192.168.*.*)
Below are all of my test results. Can someone provide a suggestion for repairing this? The Windows Server machine is a clients computer I access to it via remote desktop but I can't do much with it though I do have administrator rights. The Windows 7 machine is my development platform so I have been able to do extensive testing on it.
This problem is presenting in the following environments when trying to load an applet from JAR files in a HTML document using the Applet or Object tag.
Windows Server 2008 (Intel Chipset)
Tested Browsers:
Internet Explorer 9 (32 bit) - Shows it is blocked by default then simply shows an x when loaded from a web page, same result when loading from local drive.
Windows 7 Home Premium (AMD Chipset)
Tested Browsers:
Firefox 6.0.1 (32 bit) - Java logo shows with spinner, after a few minutes there is finally an error that a class in the jar was not found
Internet Explorer 9 (32 bit) - Java logo shows with spinner, after a few minutes there is finally an error that a class in the jar was not found
Internet Explorer 9 (64 bit) - Java logo shows with spinner and most of the windows desktop manager freezes, keyboard is the only thing that responds so you can alt-tab to another app to regain control of the desktop.
Chrome (32 bit) - Java logo shows with spinner, after a few minutes there is finally an error that a class in the jar was not found
The only way I have been able to get a Java applet to run on a 64 bit machine are the following ways.
Firefox 9 nightly (64 bit) works perfectly! Go Firefox!
Internet Explorer 9 (32 bit) loading directly from drive (c:\...)
Chrome (32 bit) loading directly from drive (c:\...)
Firefox 6.0.1 (32 bit) loading directly from drive (c:\....)
Can someone please help! I've been fighting with this bug for over a week and I can't find anything that will solve it, I have noticed that in some cases if my jar has very little code in it than it will run on the server, but the minute I start adding things to it the jar won't load anymore.

jschell wrote:
rritoch wrote:
I am developing an applet (extends Applet but uses swing components) using JDK 1.6 (Though these problems still happen in JDK 1.7) and I am unable to get the applet to load on a 64 bit machine in most cases.
To clarify...
1. You have tried it on 32 bit machine? Exactly which OS?I tested this on Windows Vista Business which is in 32 bit mode and the applets run without any problems
>
2. Your only 64 bit tests have involved 2008/Win7?
If so then I would suspect something with windows not java. Probably permissions.
The web server(s) are running on localhost and I am connecting on the same machine using a local network ip address (such as 192.168.*.*)
Yes, I haven't tried running the jars on other operating systems.
>
I don't understand that. If you are running on localhost then you should connect to localhost. If running on an IP then you should connect to that. Perhaps you meant that you have tested using both of those?I'm testing using the lan ip address but I'm connecting from the same machine. I've tried localhost and that didn't work so I tried lan ip since that will likely have a different java security context than localhost. At first I was blaming the IIS server but I downloaded the jar directly and using HTTP fox was able to verify that the jar is being sent with the correct mime-type and that the server can upload the jar file without a problem. This leaves me to believe the problem is with Java.

How to extract html file and folder from jar file

Hi all ,
I should to submit my project tomorrow . plz help me .
In my project jar file I have html page that should run when I use the program, I can't extract it . Also it have folder that contain some files that My program should use it . I dont know how to use it from jar file or how to extract it . plz help me.
If you could I need java could for that.
Thanks alot.

Hi all ,
I should to submit my project tomorrow . plz help me .
In my project jar file I have html page that should run when I use the program, I can't extract it . Also it have folder that contain some files that My program should use it . I dont know how to use it from jar file or how to extract it . plz help me.
If you could I need java could for that.
Thanks alot.

Please help: Example how to peploy application from jar file step by step

Please help: Example how to peploy application from jar file step by step.
All help appreciated
Mike

Thanks I will try these links
Mike
"Slava Imeshev" <[email protected]> wrote:
Hi Mike,
These links could be useful:
http://e-docs.bea.com/wls/docs61////adminguide/appman.html
http://e-docs.bea.com/wls/docs61////quickstart/quick_start.html
http://e-docs.bea.com/wls/docs61//////ConsoleHelp/application.html
http://e-docs.bea.com/wls/docs61///programming/environment.html
Regards,
Slava Imeshev
"Mike" <[email protected]> wrote in message
news:3ca0e94c$[email protected]..
Please help: Example how to peploy application from jar file step bystep.
All help appreciated
Mike

Reading Images from JAR Files

Hi,
I am having a very difficult time being able to read images from a JAR file via my Applet. I have tried everything that I know about with no luck. The only way I can get this to work is to store the images individually in a sub directory of public_html on the websever. This works, but I would like the images to come down in a JAR file for performance reasons.
I am using Internet Explorer 5.5 for my browser. I checked the options and everything seems to be in order, but......
I would appreciate any feedback that anyone might have on this topic..........
Thank You....

once in a jar file i inserted a image
the jar file on clicking starts an frame.
so the image was for getting that image at the icon place at top and at minimized window
i could not get that image from jar file by new imageicon().getimage();
but i get the image if it is in the directory in which jar file is.....
can one explain the reason

Loading library from jar file

Hi all,
My question is can we load library from jar file using System.load() method.
ex:
myJar.jar
|
|----com.test.common.Util
which conatins a method to load library from jar file itself, before that i used to load from File
|---libraries/MozillaParser/......
Iam able load from Local system,
File parserLibraryFile = new File("libraries/MozillaParser" + EnviromentController.getSharedLibraryExtension());
File mozillaDistBinDirectory = new File("libraries/mozilla.dist.bin."+EnviromentController.getOperatingSystemName());
MozillaParser.init(parserLibraryFile.getAbsolutePath() , mozillaDistBinDirectory.getAbsolutePath());
but i am unable to load from jar file
URL url = ClassLoader.getSystemClassLoader().getResource("libraries/MozillaParser" + EnviromentController.getSharedLibraryExtension());
URL url1 = ClassLoader.getSystemClassLoader().getResource("libraries/mozilla.dist.bin."+EnviromentController.getOperatingSystemName());
MozillaParser.init(url.toString(), url1.toString());
Thanks in advance.

That's a really confusing post.
The easiest way to make sure you can use the classes in a jar file is to copy the jar file to the "/jre/lib/ext" subfolder of your JDK. These classes will be visible to all applications.

Unable to read TLD "META-INF/jsf_core.tld" from JAR file "file:

Hallo everybody :-) i've installed Workflow-Server + ARES + FormManager. When i call localhost:8080/adminui i can log in and the browser loads the next site --> it fails and says: org.apache.jasper.JasperException: Unable to read TLD "META-INF/jsf_core.tld" from JAR file "file:/C:/Adobe/LiveCycle/jboss/server/all/tmp/deploy/tmp56414LiveCycle.ear-contents/admi nui.war/WEB-INF/lib/jsf-impl.jar": org.apache.jasper.JasperException: Failed to load or instantiate TagExtraInfo class: com.sun.faces.taglib.FacesTagExtraInfo org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:5 0) org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409) org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:183) org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:181) org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:418) org.apache.jasper.compiler.Parser.parseDirective(Parser.java:483) org.apache.jasper.compiler.Parser.parseElements(Parser.java:1539) org.apache.jasper.compiler.Parser.parse(Parser.java:126) org.apache.jasper.compiler.ParserController.doParse(ParserController.java:220) org.apache.jasper.compiler.ParserController.parse(ParserController.java:101) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:203) org.apache.jasper.compiler.Compiler.compile(Compiler.java:470) org.apache.jasper.compiler.Compiler.compile(Compiler.java:451) org.apache.jasper.compiler.Compiler.compile(Compiler.java:439) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:810) com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322) com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130) com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87) com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200) com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117) javax.faces.webapp.FacesServlet.service(FacesServlet.java:198) com.adobe.framework.SecurityFilter.doFilter(SecurityFilter.java:177) com.adobe.idp.um.auth.filter.PortalSSOFilter.doFilter(PortalSSOFilter.java:106) com.adobe.framework.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter .java:161) Any idea what' wrong? Thanks, Valerio

Hi Howard,
thank you for your post.
I actually new about the problems with the jvm version. Still i wanted to ask, cause there are different reports on this `java problems` and even though the 1.4.2_08 seems to be the best version (by the way this version is not to be downloaded any longer *sig*), there are people getting all installed with other versions. I couldn't find any regularity in the misbehavior of the servers while installing.
I finally achieved and got everything working ... but very slow. Loading the adminui or BAM features takes very long time (over one minute). Have you already had this delay. Any hint?
Thanks again,
Valerio

How many Ways jar files from ear file on a jboss can be downloaded on clien

Aoa
How many Ways jar files from ear file on a jboss can be downloaded on client side
like jnlp etc..
Regards
M Fazal Ur Rehman

First, you need to be able to boot from the Recovery HD:
Boot Using Command+R keys:
1. Restart the computer.
2. Immediately after the chime press and hold down the
"COMMAND" and the "R" keys together.
3. Release the keys when the Utilities Menu appears.
Once at the Utilities Menu select Terminal from the Utilities menu in the screen's menubar. Now, you need to know where these new files are located. You move to any location using the 'cd' command such as cd /Users/user_name/Documents, then press RETURN. Replace user_name with your actual username. Next you need to do a directory listing to see if your files are in that location, Documents. Use ls -al to do a directory listing of the files and folders in Documents. If you find your new files there, then connect an external drive or flash drive. You will need to know the name you have assigned to this drive. It needs to be already formatted. Copy your files using cp /Documents/filename /Volumes/volname/filename. Replace volname and filename with those that apply. Press RETURN.
Or take it to your local Apple Store and see if they can do the chore for you.

Deleting file from .jar file

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