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As Ron suggests, you should use a database for this; and it really is not that complicated. Trying to modify a text file in the way you describe is prone to errors and losing all your data. You could read the file at startup and keep it all in memory. Then every time you get a new account add it to your in memory list and write the complete file back to disk. However, this method is still not totally secure.
Veni, vidi, abiit domum
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C.CoderCreator wrote: I was wondering if this is possible to do?
If there is no server then EVERYONE must have access to the file system. So that means NO internet.
If that is ok with you then the way this is typically handled is with a "file lock". Depending on what the clients look like and the OS then there might be native support for this. However there are non-OS supported ways that are almost workable for simple cases. Failures usually result in locked applications. Failures are very likely to occur. So likely that if they don't occur that would be an abnormal situation.
You can google for "file lock" to find more information if the limitations are ok.
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Potentially try to have two+ threads doing file IO operations, have them synchronized & you might have to close the stream upon every operation.
I'm going to be honest, it's not the most effective way to do FileIO, but as long as the file gets updated after each thread gets closed & you re-read the data before processing on each thread, you should be able to perform operations with a single file, on two+ threads.
Keep in mind that a synchronous thread will affect performance by "taking turns" with data processing, but I doubt you'll need to operate at a very very fast speed to see the difference.
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how to connect assests folder content such as text files or property files to database
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Is this a Java question, and if so, please give some proper detail about your problem.
Veni, vidi, abiit domum
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i have many dictionary data files in my assests folder. i have developed a dictionary for android and some other apps for this im using the data from assets folder so then the app is becoming slow.. and im new to technology and dont have knowledge on database, what would be the better option
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Then go and research the various database options available to Android.
Veni, vidi, abiit domum
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I want to make a project on voice storage and recognition in java.
Can some one tell me how to begin and proceed for it?
Nehajava
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How to access desktop application from html page without using ActiveXObject because using it the programme runs only on IE.
<html>
<head>
<title>Application Executer</title>
<!-- <HTA:APPLICATION ID="oMyApp"
APPLICATIONNAME="Application Executer"
BORDER="no"
CAPTION="no"
SHOWINTASKBAR="yes"
SINGLEINSTANCE="yes"
SYSMENU="yes"
SCROLL="no"
WINDOWSTATE="normal">-->
<script type="text/javascript" language="javascript">
function RunFile() {
WshShell = new ActiveXObject("WScript.Shell");
WshShell.Run("c:/windows/system32/ooVoo.exe", 1, false);
}
</script>
</head>
<body>
<input type="button" value="Run oovoo" onclick="RunFile();"/>
</body>
</html>
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You can't; that is specifically disallowed by browsers for security reasons.
Veni, vidi, abiit domum
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You could find out by reading any introductory Java reference, or take a look at the Java Tutorials[^].
Veni, vidi, abiit domum
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Classname objectname=new Classname();
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I have created one swing application,in that my database should be updated by reading sms in modem(inbox) pls help me friends
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Hello everyone! Pls i have writing console application with java bcus that is what we were taught with. Now, i decided to write calculator program using d jbuilder visual class. I have designed d interface and when i tried to write to each button, i can't do it. So pls, som1 shud give me d guideline to achieve dis, how to input codes, and d codes required for dis calculator if not all, but at least a sample plsssssss. Tnx in adv.
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1. Use the Java Tutorials[^], and sample articles you can find on the internet.
2. Write proper words rather than this childish txtspk such as pls, som1 shud give me d guideline.
Veni, vidi, abiit domum
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hey guys can u pls tell me which group to join,,,,,,i want to learn java n i choose java as my career platform
"You are the Creator of Yourself"
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I would like to know how to count blank lines before methods in java code
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Read each line, if it's blank add 1 to a counter. Continue until all lines have been read.
Veni, vidi, abiit domum
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