filename from java.io.FileInputStream

[barry]

Hi, a real quicky question.
Can I retrieve the filename from a FileInputStream?

private String getFilename(FileInputStream fis)
{
return "test.dat"; //test.dat hard-coded
}


fis has been created by

FileInputStream fis=new FileInputStream(new File("c:\\test.dat"));

but I want getFilename(..) to work with any filename, not just test.dat.

Thank you
Barry

 

[Christophe Vanfleteren]

Hi, a real quicky question.
Can I retrieve the filename from a FileInputStream?

private String getFilename(FileInputStream fis)
{
return "test.dat"; //test.dat hard-coded
}


fis has been created by

FileInputStream fis=new FileInputStream(new File("c:\\test.dat"));

but I want getFilename(..) to work with any filename, not just test.dat.

Thank you
Barry

You can't. But you could create your own subclass of FileInputStream, where
you do keep the filename available.

Or you could create a Map, using the FileInputStream as key, and the
filename as value.

 

[Andrew Hobbs]

Hi, a real quicky question.
Can I retrieve the filename from a FileInputStream?

private String getFilename(FileInputStream fis)
{
return "test.dat"; //test.dat hard-coded
}


fis has been created by

FileInputStream fis=new FileInputStream(new File("c:\\test.dat"));

but I want getFilename(..) to work with any filename, not just test.dat.

Thank you
Barry

I don't think you can. However since you need the path/filename in the
first place to construct the FileInputStream why do you want to re-extract
it. At the very least, as long as you still have a reference to the File
then you can get the information you want from that.

Andrew


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