File access question

I've written an application that runs on a server and watches a list of directories specified in an .ini file. A thread is executed every few seconds (also specified in the .ini) that checks to see if any files have been copied into any of the directories it is monitoring. If it finds one or more files, it zips them into a .zip file and copies them to an output directory.
The problem I'm having is people are copying HUGE .eps files into the directories through our company's network. The thread gets executed before the copy is done and a .zip file of the partial .eps file gets created.
The question is how can java know if a file is currently being written to? My application needs to wait until the file has been fully copied before it tries to zip it up and send it out. How can I achieve this?

These are all good responses, but I've now tried most of them and I still get sent back to my original problem:
We're using Windows NT so I don't know if this is the same case for UNIX or other OS'es but when you copy a large file from one machine to another, NT automatically allocates disk space on the target machine for the size of the file AFTER the copying is done.
So if you were copying a 64 Meg .eps file from one machine to another, as soon as the copying starts the file system reports the file size as 64 Megs not however much has been copied so far. So I don't think filesize checking will help.
I tried using canWrite() on a file currently being copied to and it returns true so that didn't work either. I'm sure it has something to do with the way NT copies files. It allocates all of the disk space necessary right from the start so Java thinks it is a whole file and can do whatever it wants with it.
I also tried the rename-and-replace method but still ran into the same problem. NT reported to Java that a complete file was available even though it was a partial file. So then the renaming and deleting took place way before the file was actually done copying.
I think what I really need is some way to access whether or not the file is currently being used. Just a simple true or false method that will tell me if another application or the file system itself is currently using a file. Then I'll just wait until it is done and then zip it up.
I read the JavaDoc for the FilePermission class and it reads like Greek to me and I don't think it will be much help. Any ideas?

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I'm not sure if this question belongs in this forum. Please move it if you want to.
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I got new hard driver for my MacBook I don't have the cd but I do have flash drive that has the software I need help because when I turn on my laptop it shows me a file with question mark how can I install the software from the flash driver?

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Not Working: BlackBerry Link Remote File Access Remove Old BlackBerry from BB ID

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No one cares because it's not a z10 (I know because I am having the same problem and no one knows how to fix it and no threads for q10 fix)
Slàinte.
Not all things are good.
Not all things are evil.
But with an open mind...
You can see the difference.
Knowledge is power.

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right then, as it looks like I'm talking to myself....
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Hi,
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occurred.
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Hi Bill!
> I'm a DBA recently assigned to support MaxDB database (ver 7.6) used by
> SAP Content Server in our windows 2003/32 bit environments.
> Initially, our windows support group granted the DBA group access to
> the files on E:\sapdb\data\wrk\CD1 where the KNLDIAG and other files
> are allocated. We were able to view the KNLDIAG file when errors
> occurred.
> However, when the database instance is placed offine and back online,
> we loose access to the KNLDIAG file, but not the other files on the
> same directory/subdirectory.
>
> Can you explain what is happening?
Yes, no problem!
> Is MaxDB doing something behind the scenes?
Of course not - it's well documented
Unlike Oracle MaxDB does not use the same file all the time to write out the error messages.
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> What can be done so that we don't loose access to this file?
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regards,
Lars
p.s.
Maybe you didn't notice that by now - the KNLDIAG file is not simply written at the end of the file, but consists of a startup header part and a body which is cyclically overwritten.
For any newbies I cannot overstate the importance of reading the documentation [http://maxdb.sap.com] and/or get a training for it (SAP course ADM 515 really pays of here...)

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Hi,
The issue could be due to windows indexing service taking long time in sorting and searching in mapped drives. Please try the steps belwo to disable windows indexing service or search service on the windows 7 client to resolve the issue.
You can click on Start and select Control Panel, click on
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Best Regards,
Mandy
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Problem with file access in other computer in jsp

I have problem with file accessing in other computer in jsp.
The follow code
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but it works well in main funtion.
Is anybody know what is the problem.
JSP works on windows2003 server,tomcat 5.0.28 JDK1.4 net share folder on windows2000 server

no error code for this.But when I start tomcat I get the follow error.
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     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
     at org.apache.catalina.core.StandardHostDeployer.addChild(StandardHostDeployer.java:903)
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     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
     at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:256)
     at org.apache.commons.digester.Rule.end(Rule.java:276)
     at org.apache.commons.digester.Digester.endElement(Digester.java:1058)
     at org.apache.catalina.util.CatalinaDigester.endElement(CatalinaDigester.java:76)
     at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
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     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
     at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
     at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
     at org.apache.commons.digester.Digester.parse(Digester.java:1567)
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     at org.apache.catalina.core.StandardHost.install(StandardHost.java:863)
     at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:483)
     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427)
     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
     at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
     at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
     at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
     at org.apache.catalina.core.StandardService.start(StandardService.java:480)
     at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
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Jun 5, 2006 6:55:41 PM org.apache.catalina.core.StandardContext start
SEVERE: Error in resourceStart()
Jun 5, 2006 6:55:41 PM org.apache.catalina.core.StandardContext start
SEVERE: Error getConfigured
Jun 5, 2006 6:55:41 PM org.apache.catalina.core.StandardContext start
SEVERE: Context startup failed due to previous errors
Jun 5, 2006 6:55:41 PM org.apache.catalina.core.StandardContext start
SEVERE: Exception during cleanup after start failed
LifecycleException: Container StandardContext[msgstore] has not been started
     at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4466)
     at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
     at org.apache.catalina.core.StandardHostDeployer.addChild(StandardHostDeployer.java:903)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:216)
     at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:256)
     at org.apache.commons.digester.Rule.end(Rule.java:276)
     at org.apache.commons.digester.Digester.endElement(Digester.java:1058)
     at org.apache.catalina.util.CatalinaDigester.endElement(CatalinaDigester.java:76)
     at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
     at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
     at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
     at org.apache.commons.digester.Digester.parse(Digester.java:1567)
     at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:488)
     at org.apache.catalina.core.StandardHost.install(StandardHost.java:863)
     at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:483)
     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427)
     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
     at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
     at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
     at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
     at org.apache.catalina.core.StandardService.start(StandardService.java:480)
     at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
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     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)

File access to /res folder before decompression

Hi, anyone please assist on how i would access a compressed text file in the /res folder before I can decompress it. I also need to know if its possible to create a file since the decompression algorithm creates a new decompressed file. The following code runs on a computer but I need to use it in the J2ME platform by calling it from the midlet class. Any assistance will be highly appreciated:
import java.io.*;
import java.util.*;
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final static int MAX_CODES = 4096;
final static int BYTE_SIZE = 8;
final static int EXCESS = 4;
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static int [] s;
static int size;
static Element [] h;
static int leftOver;
static boolean bitsLeftOver;
static BufferedInputStream in;
static BufferedOutputStream out;
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String inputFile, outputFile;
if(args.length >= 1){
inputFile = args[0];
if(!inputFile.endsWith(".lzw")){
System.out.println("The filename must end with \"lzw\" extension");
System.exit(1);
in = new BufferedInputStream(new FileInputStream(inputFile));
outputFile = inputFile.substring(0, inputFile.length()-4);
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out.write(s);
private static int getCode() throws IOException{
int c = in.read();
if(c == -1)return -1;
int code;
if(bitsLeftOver)
code = (leftOver<<BYTE_SIZE)+c;
else{
int d = in.read();
code = (c<<EXCESS)+(d>>EXCESS);
leftOver = d&MASK;
bitsLeftOver = !bitsLeftOver;
return code;
private static void decompress() throws IOException{
int codeUsed = ALPHA;
s = new int[MAX_CODES];
h = new Element[MAX_CODES];
int pcode = getCode(), ccode;
if(pcode>=0){
s[0] = pcode;
out.write(s[0]);
size = 0;
do{
ccode = getCode();
if(ccode<0)break;
if(ccode<codeUsed){
output(ccode);
if(codeUsed<MAX_CODES)
h[codeUsed++] = new Element(pcode, s[size]);
else{
h[codeUsed++] = new Element(pcode, s[size]);
output(ccode);
pcode = ccode;
}while(true);
out.close();
in.close();
public static void main(String [] args) throws IOException{
setFiles(args);
decompress();

if(messageNotWellFormatted("File access to /res folder before decompression"){
retry();
}else{
answerTo(post.getProfile());
}retry with the formatting tips !!!!!

File access question

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