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Force IOException during file reading


Force IOException during file reading

By : Shankar Agrawal
Date : November 20 2020, 07:00 PM
hope this fix your issue Disclaimer: I have not tested this on a non-Windows platform, so it may have different results on a platform with different file locking characteristics.
If you lock the file beforehand, you can trigger an IOException when something attempts to read from it:
code :


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Sharing violation IOException while reading and writing to file C#

Sharing violation IOException while reading and writing to file C#


By : arthurpf
Date : March 29 2020, 07:55 AM
To fix the issue you can do Well, you're trying to open the file file_no.txt for reading and for writing using separate streams. This may not work as the file will be locked by the reading stream, so the writing stream can't be created and you get the exception.
One solution would be to read the file first, close the stream and then write the file after increasing the fileNo. That way the file is only opened once at a time.
code :
FileStream fileStream = new FileStream(@"file_no.txt", 
                                       FileMode.OpenOrCreate, 
                                       FileAccess.ReadWrite, 
                                       FileShare.None);
int logFileNo = 1;
string fileName = String.Format("log_{0}.txt", logFileNo);

while (File.Exists(fileName))
{
    logFileNo++;
    fileName = String.Format("log_{0}.txt", logFileNo);
}
how to throw IOException while reading a file using Mockito?

how to throw IOException while reading a file using Mockito?


By : Ian Myrfield
Date : March 29 2020, 07:55 AM
will help you You're mocking a BufferedReader, but your method doesn't use your mock. It uses its own, new BufferedReader. You need to be able to inject your mock into the method.
It seems that inputStream is a field of the class containing this method. So you could mock the inputStream instead and make it throw an IOException when its read() method is called (by the InputStreamReader).
Unreported exception IOException reading file from URL

Unreported exception IOException reading file from URL


By : Support Informatique
Date : March 29 2020, 07:55 AM
should help you out While you actually handle these exceptions in the body of your method by wrapping them into a RuntimeException, your method signature "lies" to the compiler:
code :
private static String readUrlTextContent(String url) throws IOException, MalformedURLException {
private static String readUrlTextContent(String url) {
IOException while reading hadoop sequence file

IOException while reading hadoop sequence file


By : Manaswini
Date : March 29 2020, 07:55 AM
it should still fix some issue I'm reading hadoop sequence file in java using following code , I found a bug. It was in MyWritable1 readFields function
Mysterious IOException while reading a file

Mysterious IOException while reading a file


By : Jack
Date : March 29 2020, 07:55 AM
I wish this helpful for you One possible reason why you're seeing this behavior is because you are performining the copy multiple times. One of them is most certainly failing. There is no way it can produce that exception and still write the file normally, given the code you've posted.
The other process the exception is talking about could very well be your own application.
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