You wrote
File dataStorageDirectory = new File(argPath);
File toWrite = new File(argPath + argFileName);
Do you intent to write
File dataStorageDirectory = new File(argPath);
File toWrite = new File(argPath, argFileName);
',' instead of '+' for appending a filename to the path?
See JavaDoc for File(String parent, String child).
BTW: If you open an existing file for writing again it
will be overwritten if you write to it. Run the
following to see what I mean:
<code>
import java.io.*;
public class Test
{
public static void main(String [] args) throws IOException {
String filename = "test.txt";
File file = new File(filename);
FileOutputStream out = new FileOutputStream(filename);
byte msg [] = new byte[10];
out.write(msg);
out.close();
System.out.println("first: " + file.length());
out = new FileOutputStream(filename);
msg = new byte [1];
out.write(msg);
out.close();
System.out.println("second: " + file.length());
}
}
</code>
- Sascha
Sunburned Surveyor schrieb:
> I had a few minutes after my wife went to bed tonight to work on my
> FeatureCache. I'm currently writing code for the BOFFFeatureWriter. In
> this class I have a method that sets up a DataOutputStream so I can
> write bytes representing the feature to a binary file.
>
> I need to see if a binary file representing the Feature already
> exists. If it does exist I need to delete it so the file can be
> "overwritten". (In the FeatureCache each Feature is saved to a binary
> file that has a unique name. This unique name is the same as the
> unique number that identifies the Feature object. I don't want to
> append the data being written to an existing file, nor do I want to
> have two (2) files with different names representing the same Feature
> object.)
>
> I haven't written a lot of Java I/O code, so I was hoping one of you
> more experienced developers might look at the method I wrote that
> prepares the DataOutputStream to see if I had any obvious mistakes or
> bugs. I have pasted the method statements in the attached text file.
>
> Thank you for the help.
>
> The Sunburned Surveyor
>
>
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