open « error « Java I/O Q&A

1. How do you fix "Too many open files" problem in Hudson?

We use Hudson as a continuous integration system to execute automated builds (nightly and based on CVS polling) of a lot of our projects. Some projects poll CVS every 15 ...

2. (Too many open files)

I am confronted by this exception and looking for the ways to solve it. This error obviously indicates that JVM has allocated too many handles and underlying OS won't let it ...

3. "ffmpeg": error=24, Too many open files

I am working with ffmpeg to generate previews, but I get this error in the middle of the execution of my program: "ffmpeg": error=24, Too many open files Does anybody know how ...

4. (Too many open files)

I use the following code to write some data to files:

BufferedWriter writer = null;
try {
    writer = new BufferedWriter(new FileWriter(file));
finally ...

5. Error on opening files in MPlayer because of whitespaces

I'm trying to open videos files using MPlayer, but I've found out a problem when passing the command line to it from a Java application.
I'm using the Runtime class to pass ...

6. Invalid argument and Too many open files

I use library which download torrents. But today some error happened (log):

Could not create temp files Invalid argument
    at Method)
    at jBittorrentAPI.DownloadManager.checkTempFiles(

7. java FileNotFoundException Too many open files

I'm trying to build an automatic backup script in Java. I'm not very good at Java though so this is proving difficult. Here's my code:

package javatest;


public class ...

8. in java,getting error "Cannot run program "/bin/sh": error=24, Too many open files"

I am using the following code to run the shell script continuously.

String[] process = new String[] {"/bin/sh", "-c","pgrep httpd" };
Process proc = new ProcessBuilder(process).start();
InputStreamReader input = new InputStreamReader(proc

9. How do I open, write and save a file while avoiding errors?

I need to erase a file in my program. My solution was to have an erase() method that would do that like so:

public static void erase(String string) {

10. Too many open files

I am receiving this error message after running my program. Actually the full stack trace is: Too many open files at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.( at java.lang.Runtime.execInternal(Native Method) at java.lang.Runtime.exec( at java.lang.Runtime.exec( at java.lang.Runtime.exec( at java.lang.Runtime.exec( I am basically doing a UNIX system call (using the JAVA Runtime.exec() method). I need to do this 60,000 time. I am closing my ...

11. Too many open files

Hi We are doing testing on Pramati 3.5 server after doing some transaction i got the following error Too many open files at Method) at at at com.pramati.admin.history.PersistenceXMLMsgMaker.buildHeader( at com.pramati.admin.history.DataCollector.updateData( at com.pramati.admin.history.DataCollector.update( at com.pramati.admin.history.AdminHistoryCollector.updateData( at com.pramati.admin.history.AdminHistoryCollector$TimerNotificationHandler.handleNotification( at com.pramati.admin.base.PramatiNotificationListener$ at com.pramati.util.thread.ThreadPool$ Cannot create a file when that file already exists at Method) at at ...

12. Exception problem: Too many open files

Hi Guys, I have a little program that works on a big grid of data (like a 2D array), by passing in two parameters it should return the closest data point from the grid file, which is accessed using RandomAccessFile. I need to do this in a loop about 1 million times, but after a few thousand iterations I get ...

13. Too many Open Files Exception

I have a very big application. When I run the application, at some point of the time, it gives "Too many open files exception". Can anyone let me know about any tool which analyses my application and reports me of the open file handles. I request you to suggest me in this regard Thankyou.. ravinder.

14. too many open files

I have one class which is creating new FileOutputStream in loop.It is creating 35 files correctly and then after upto 65 files it creates the file but throwing exception JAVA.IO.IOECEPTION :"Cannot create a file when that file already exists" .I have the structure of Class upto 4 classes then after it is create the file in loop.

15. many files open

I am running java program involving 5 threads which runs continuously. I am writing the start and stop time of each thread in a log file. The code is given below. File file = new File(simplerm + File.separator + "Interface" + File.separator + "Report" + File.separator + "AutomatedStopReport.log"); icount++; PrintWriter pw = null; FileWriter fw = null; java.util.Date dtdate = new ...

16. (Too many open files)

Hi Guys, Could someone please help me on this. This problem occurs quite regularly and i've been sitting here scratching my head for quite sometime. We've got an application that posts XML is an particular folder and after that our application reads the XMLs from that folder and processes the XML. However , of late, we've been noticing that in the ...

17. ( Too many open files )

Good Morning all! My appliaction some times throws the following error F:\.."Path"..\ (Too many open files) The error is thrown through the following code public void writeContents() throws IOException, SecurityException { BufferedWriter bw = null; try { bw = new BufferedWriter(new FileWriter(absPathOfInputFile)); for (int iCount = 0; iCount < vecFileContents.size(); iCount++) { bw.write(vecFileContents.elementAt(iCount).toString()); bw.newLine(); } bw.flush(); bw.close(); } The ...

18. FileNotFoundException - Too many files open

Without looking at all your code we really can't be much help. However, I will say you must close ALL resources (sockets, database connections, files and so on) in the finally block of a try-catch-finally structure. If you get an exception, your code will skip the rest of the code in a try block. The only way to make sure resources ...

19. Too many open files error

Hi, Welcome to JavaRanch! In your inner loop, you open the file Transreg.txt, but you never close it. All you need to do to fix the error would be to close that file at the end of the inner loop. Now, as to making the program faster: without even looking at your algorithm, I can suggest that one way to vastly ...

20. Exception while opening a Remote file.

21. Too Many Files Open Error

Thanks folks but i've already included finally clause in the programme which i didn't mention before. finally { try { if ( ip != null) ip.close(); } catch(Exception e) { context.getOmxContext().getLogger().logException("Error Closing file stream", e); } } and then i was getting error at line 33 as per the stackTrace. Moreover in getInputStream method i'm using is = new FileInputStream(aFile); to ...

22. IOException:Too many open files

23. Gracefully handling IOException: too many open files

I am writing a program to analyze files in a directory. Basically, the java program creates a CSV file for loading into a database, where I can check md5 sums to find duplicate files. The problem I am running into is a common one: IOException due to "Too many open files". I see a lot of answers that involve trying to ...

24. java IOEXCEPTION:too many open files

i got these message when i trying to run a multithread program Too many open files at Method) at at cn.csdb.gsqcs.controller.DoWork.touchFileAndWrite( at at java.util.concurrent.ThreadPoolExecutor$Worker.runTask( at java.util.concurrent.ThreadPoolExecutor$ at and these Cannot run program "transeq": error=24, Too many open files at java.lang.ProcessBuilder.start( at java.lang.Runtime.exec( at java.lang.Runtime.exec( at java.lang.Runtime.exec( at at java.util.concurrent.ThreadPoolExecutor$Worker.runTask( at java.util.concurrent.ThreadPoolExecutor$ at ...

25. Too Many Files Open Error

I have a program that contain process a big text file and generates almost 1000 files from this big file.The programs run well on Windows (LapTop 1GB RAM)..but on Linux, just after generating 100 or less files, it gives error of Too many files open (not the same machine as for Windows)... Need some guidance please Thanks in Advance

26. (Too many open files)

I have two guesses, but I haven't read your code, so I could be way off. 1. You think you're only opening 1 file, but you're actually doing this in a loop, and either looping more times than you think, or not closing files when you're done, or both. 2. The class (whatever that is) tries to be "clever" by ...

27. when using Desktop.getDesktop().open

Hi Guys, I am trying to open a file using Desktop.getDesktop().open() and get this exception: 2008-12-09 09:36:16,537 [SwingWorker-pool-1-thread-68] ERROR ( - Could not generate report Failed to open file:/C:/Documents%20and%20Settings/labuser/Desktop/myfile.pdf. Error message: The parameter is incorrect. at Source) at Source) at Source) at at$2$1.doInBackground( at javax.swing.SwingWorker$ Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at Source) at Source) ...

28. Too Many Open Files Error

29. Error during file open

30. [FileNotFoundException] Problem opening a file.

My question is if I am using the correct path specifications. The file is there and is not "read-only". Obviously there might be some other problem that I cannot see. Can someone show me how relative pahts work in Java? From where does the relative path starts when we consider Eclipse workspace? Obviously its hard to recreate my problem on others ...

32. IO Exception / Too Many Open Files

Hi, At the first time I get an IO exception that said too many open files and I have written to the forum, it was because of the streams and scanners that I didn't close so there were really too many open files. After that I checked from the documentation and it says that only inputstreams, outputstreams and random access files ...