ioexception

Troubleshooting 'Too many files open' with lsof

北慕城南 提交于 2019-12-03 10:27:40
问题 I have a Java application running on Linux with PID 25426. When running lsof -p 25426 , I noticed: java 25426 uid 420w FIFO 0,8 0t0 273664482 pipe java 25426 uid 421r FIFO 0,8 0t0 273664483 pipe java 25426 uid 461r FIFO 0,8 0t0 273622888 pipe java 25426 uid 463w FIFO 0,8 0t0 273633139 pipe java 25426 uid 464r FIFO 0,8 0t0 273633140 pipe java 25426 uid 465r FIFO 0,8 0t0 273622889 pipe java 25426 uid 471w FIFO 0,8 0t0 273623682 pipe java 25426 uid 472r FIFO 0,8 0t0 273633141 pipe How should

xml pull parser assets xml

半世苍凉 提交于 2019-12-03 09:32:34
问题 How can i parse a local XML file in the assets folder using pull parser? I can't get pull parser to work. It always throws an io exception. I think I can't get the path to the file, or connecting to the file. 回答1: mixm, I was toying with various ways to load a local file from both 'assets' and 'res', but to answer your question as asked (as no one else seems to have): First, either make sure your XML is valid before testing or turn off validation, this is how you can do that and instantiate a

Too many open files Error on Lucene

半世苍凉 提交于 2019-12-03 09:31:23
The project I'm working on is indexing a certain number of data (with long texts) and comparing them with list of words per interval (about 15 to 30 minutes). After some time, say 35th round, while starting to index new set of data on 36th round this error occurred: [ERROR] (2011-06-01 10:08:59,169) org.demo.service.LuceneService.countDocsInIndex(?:?) : Exception on countDocsInIndex: java.io.FileNotFoundException: /usr/share/demo/index/tag/data/_z.tvd (Too many open files) at java.io.RandomAccessFile.open(Native Method) at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233) at org

Java: what are IOEXceptions in BufferedReader's readLine() for?

五迷三道 提交于 2019-12-03 08:10:35
I can "fix" the below exception with a try-catch loop but I cannot understand the reason. Why does the part "in.readLine()" continuosly ignite IOExceptions? What is really the purpose of throwing such exceptions, the goal probably not just more side effects? Code and IOExceptions $ javac ReadLineTest.java ReadLineTest.java:9: unreported exception java.io.IOException; must be caught or declared to be thrown while((s=in.readLine())!=null){ ^ 1 error $ cat ReadLineTest.java import java.io.*; import java.util.*; public class ReadLineTest { public static void main(String[] args) { String s;

How can I handle an IOException which I know can never be thrown, in a safe and readable manner?

走远了吗. 提交于 2019-12-03 06:55:53
问题 "The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." -Douglas Adams I have an class FileItems. FileItems constructor takes a file, and throws an exception (FileNotFoundException) if the file doesn't exist. Other methods of that class also involve file operations and thus have the ability throw the FileNotFoundException. I

IOException for drive full or out of space

做~自己de王妃 提交于 2019-12-03 02:39:19
I am looking for a list of platform-specific (JRE-specific) of IOException messages indicating disk is full or out of space. So far I have: Windows: There is not enough space on the disk Solaris/Linux?: Not enough space GCJ: No space left on device I wish Java would make an IOException subclass for this... Matt The wording is actually a system message, not one from the JRE. (POSIX compliant will return "Not enough space") As such, your best bet is to get a list of system error messages for the OS' you are targeting. Alternatively, when the exception is thrown, you could check to see if there

Troubleshooting 'Too many files open' with lsof

最后都变了- 提交于 2019-12-02 23:52:02
I have a Java application running on Linux with PID 25426. When running lsof -p 25426 , I noticed: java 25426 uid 420w FIFO 0,8 0t0 273664482 pipe java 25426 uid 421r FIFO 0,8 0t0 273664483 pipe java 25426 uid 461r FIFO 0,8 0t0 273622888 pipe java 25426 uid 463w FIFO 0,8 0t0 273633139 pipe java 25426 uid 464r FIFO 0,8 0t0 273633140 pipe java 25426 uid 465r FIFO 0,8 0t0 273622889 pipe java 25426 uid 471w FIFO 0,8 0t0 273623682 pipe java 25426 uid 472r FIFO 0,8 0t0 273633141 pipe How should this result be interpreted? I am troubleshooting an issue with too many open files and trying to

Using e.printStackTrace() in Java

强颜欢笑 提交于 2019-12-02 21:34:26
This is probably a newbie question, but hope you can help me. :) I have something like this: try { //try to do something there } catch (IOException e) { //handle the exception e.printStackTrace(); } I am using NetBeans IDE and for some reason the printStackTrace is underlined in a squiggly line. When I press Alt+Enter, it says Throwable.printStackTrace() should be removed. What does this mean? Could anyone give more insight as what this may mean? Or can I ignore this? Thanks! It is just a recommendation. In eclipse it is fine - I believe it is just the IDE telling you that there are more

How can I handle an IOException which I know can never be thrown, in a safe and readable manner?

时光怂恿深爱的人放手 提交于 2019-12-02 21:29:21
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." -Douglas Adams I have an class FileItems. FileItems constructor takes a file, and throws an exception (FileNotFoundException) if the file doesn't exist. Other methods of that class also involve file operations and thus have the ability throw the FileNotFoundException. I would like to find a better solution. A solution which doesn't require that other programmers handle all of

“java.io.IOException: Stream closed” with new BufferedReader

无人久伴 提交于 2019-12-02 17:30:15
问题 Many people asked question like that but this one is a little bit different. Here is the code: public static BufferedReader reader; public static String readString() throws IOException { reader = new BufferedReader(new InputStreamReader(System.in)); String s = reader.readLine(); reader.close(); return s; } While program runtime readString method is invoked many times. The second call causes exception: stream closed . I can not understand: why it ends up so? Every time we declare new