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I have a Java code that writes to a file after selecting which rows to process. The problem is that by the end of the execution, the contents of the file being written on completely disappears. The weird thing is that the code works properly on Windows but doesn't on Unix. One other thing is that when only one entry is selected, the code works as it should but when more than one entry is selected, it just fails.
No other operation is performed on this file while it is being written on.
There are two possible reasons why this happens:
You forgot to close the file. Symptom: The file exists but it has length 0.
You're using PrintWriter or PrintStream and forgot to flush it.
Someone deleted the file while you were writing it.
The latter is a security feature: As long as you keep the file open, you can read and write it but no one else can access it.
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Closed 5 years ago.
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There is an "i" icon in one of my xml file :
In the Eclipse doc, I found that it is an "Information" Icon
http://help.eclipse.org/neon/index.jsp?topic=/org.eclipse.jdt.doc.user/reference/ref-icons.htm
But what kind of information it means? How is my "primeExceptionnelle" giving me information? When I move my mouse on it, nothing appears: no tooltip, neither the underlined name "primeExceptionnelle"
Well, with all my research, it seems that this is just an indication that my code could be refactored.
From the Eclipse (and Spring Tool Suit) documentation http://help.eclipse.org/neon/index.jsp?topic=/org.eclipse.jdt.doc.user/reference/ref-icons.htm :
Information -
A problem described as Information will not affect the refactoring in any way, nor will it negatively affect the code in the workbench. You can most likely ignore this type of problem.
And it effectively could be refactored using the "p" suffix instead of :
xmlns:p="http://www.springframework.org/schema/p"
and then using it like this :
My only remaining problem is that this Information Icon doesn't appear on the Problems View of Eclipse/STS.
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Closed 7 years ago.
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So I have this text file called 'arrlog.txt' that I want time data written to.
I have defined a button called 'btnArr' and a time text field called 'etArr'. When I open this in the emulator, it literally doesn't do anything. It doesnt read to the file. It doesn't shout and scream with an error (IOException), it just closes and does nothing. Rather strange as I cant find a place in my program for this application to simply just close.
I think it may not be initialising something correctly, the file path is correct and so the FileWriter should either run the catch or it should find it and write the numbers into the file.
First, when asking for help with programming problems, please post the source code as text, not as a screenshot.
the file path is correct
No, it is not. Android does not have a C: drive. Presumably, your development machine is Windows, and that machine has a C: drive. But neither your Android device nor your Android emulator is Windows.
You are welcome to write your data to internal storage or external storage, though.
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Closed 9 years ago.
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I've seen examples on how to download files programmatically, but they all use direct links, ending with .txt .mp3 .jpg, whatever. However, the link to the file I want to download isn't a direct link: it doesn't end with .extension. How can you download the file in this case?
When downloading over HTTP, the file name is usually set by the server in Content-Disposition header. If that is not present, it is up to the client to choose the file name (based on the URL or some other strategy). The extension can often be derived from the Content-Type response header. See this for some of standard content types http://en.wikipedia.org/wiki/Internet_media_type
Very stupid answer: You can just download it as all other files. Download it the same way as you do with urls with extensions.
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I am trying to run simple static website through Jar file but not having too much luck.
The reason I want to run the website through Jar because I don't want end users to access my pages directly. For example, they should not have access to index.html page directly without actually starting my program which is built using java swing.
Things I tried:
Jar application works if I am running on the same machine where I created Jar using Eclipse because index.html page is fetching the page from local directory. which i know is wrong.
If I try using different laptop or desktop then my swing application does not open any kind of index.html through my browser.
So any suggestions?
Also, I was using Desktop.open(), Desktop.browse, getClass().getResources().getURL() .. stuff that I seen on other pages.
You need to copy your data or use a server like tomcat, jboss etc.
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Whenever I want to export from my plug-in xml, it gives the following error:
How can I solve this??
Check, if the file D:\fastcode_new\plugins\org.fastcode_1.3.0\icons\sample.gif exists and isn't write protected.
It tries to delete the file samlpe.gif (in D:\fastcode_new\plugins\org.fastcod_1.3.0\icons directory). If the file is open in another program that can cause this problem.
Sometimes you might not think it is held open, but if you did open it in a program before and upon closing the .gif program did not release it properly, it still counts a being held open. In this situation the only thing you can do is close all programs thay you ever used to open the file previously.