ioexception

问题 I am still new in Android Programming. I am following a tutorial from a book named Learning Android. When I click the update button, I end up crashing. Any idea why? Stacktrace is below. I am getting a Fatal Exception: main package com.marakana.yamba; import winterwell.jtwitter.Twitter; import winterwell.jtwitter.TwitterException; import android.app.Activity; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.View;

问题 This question already has an answer here : Proper way to close an AutoCloseable (1 answer) Closed 7 months ago . For example, I have method for working with input/output streams: public void doSomethingWithStreams () throws FileNotFoundException, IOException { OutputStream out1, out2; InputStream in1, in2; try{ //do something with Streams: read, write, process, etc. } finally{ //There I try to close connections out1.close(); out2.close(); in1.close(); in2.close(); } } Method can throws

问题 I have hadoop 1.0.4 installed on ubuntu 11.0.4 in VirtualBox(same as my hostname), somehow the data node shuts down giving the following error in the log files /************************************************************ STARTUP_MSG: Starting DataNode STARTUP_MSG: host = VirtualBox/127.0.1.1 STARTUP_MSG: args = [] STARTUP_MSG: version = 1.0.4 STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0 -r 1393290; compiled by 'hortonfo' on Wed Oct 3 05:13:58 UTC

问题 I have a .NET 4 Windows service I've written that periodically (usually once a day) communicates with an external device over a serial port. All in all the service works great, but for one customer, every now and then, a call to SerialPort.Open() throws the following exception: System.IO.IOException: Insufficient system resources exist to complete the requested service. at System.IO.Ports.InternalResources.WinIOError(Int32 errorCode, String str) at System.IO.Ports.SerialStream..ctor(String

问题 I am doing some exception handling for code which is writing to the StandardInput stream of a Process object. The Process is kind of like the unix head command; it reads only part of it's input stream. When the process dies, the writing thread fails with: IOException The pipe has been ended. (Exception from HRESULT: 0x8007006D) I would like to catch this exception and let it fail gracefully, since this is expected behavior. However, it's not obvious to me how this can robustly be

问题 Here is the stack trace: java.io.IOException: Resetting to invalid mark at java.io.BufferedInputStream.reset(BufferedInputStream.java:433) at org.tritonus.share.sampled.file.TAudioFileReader.getAudioInputStream(TAudioFileReader.java:324) at javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioInputStream(Unknown Source) at javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioInputStream(Unknown Source) at javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1179)

问题 I'm trying to write a method that lists all non-hidden files in a directory. However, when I add the condition !Files.isHidden(filePath) my code won't compile, and the compiler returns the following error: java.lang.RuntimeException: Uncompilable source code - unreported exception java.io.IOException; must be caught or declared to be thrown I tried to catch the IOException , but the compiler still refuses to compile my code. Is there something glaringly obvious that I'm missing? Code is

问题 I want to create and open a file but only if it doesnt exist. I dont want to use a File.Exists because a thread by switch after it creating a file with the same name. How do i check if the exception System.IO.IOException was caused by the file existing? I prefer not to parse the error msg (even tho it can be as simple as .indexOf("exist")) How should i do this? 回答1: You should avoid ever making logic decisions based on the contents of the Exception.Message property. That is defined to be a

问题 The Java I/O classes java.io.Reader , java.io.Writer , java.io.InputStream , java.io.OutpuStream and their various subclasses all have a close() method that can throw an IOException . Is there any consensus on the proper way to handle such exceptions? I have often seen recommendations to just silently ignore them, but that feels wrong, and at least in case of resources opened for writing, a problem while closing the file might mean that unflushed data could not be written/sent. On the other

问题 I'm writing a java file-transfer app, and i have some troubles with deserialisation myself-defined class Message from Datagramms. Other topics at StackOverflow has similar issues, but i didn't found something helpful from there, so i'm sorry in advance if i missed it. so, class Message is: import java.io.Serializable; public class Message implements Serializable { private static final long serialVersionUID = 1L; private int segmentID; private byte[] packet; private int bytesToWrite; public