Java Help - File

Author

File

Ravi

2007-04-28, 10:09 pm

import java.io.File;
class FileDemo {
public static void main(String args[]) {
File f1 = new File("/home/ravi/abc");
System.out.println("Path: "+f1.getPath());
System.out.println("Absolute path:
"+f1.getAbsolutePath());
System.out.println("Size: "+f1.length());
System.out.println("getFreeSpace:
"+f1.getFreeSpace());
System.out.println("getTotalSpace:
"+f1.getTotalSpace());
System.out.println("getUsableSpace:
"+f1.getUsableSpace());
f1.deleteOnExit();
}
}

I use GNU/Linux and the problem is that the space reported by the thre
functions is not correct. Please explain.

Joshua Cranmer

2007-04-28, 10:09 pm

Ravi wrote:
> import java.io.File;
> class FileDemo {
> public static void main(String args[]) {
> File f1 = new File("/home/ravi/abc");
> System.out.println("Path: "+f1.getPath());
> System.out.println("Absolute path:
> "+f1.getAbsolutePath());
> System.out.println("Size: "+f1.length());
> System.out.println("getFreeSpace:
> "+f1.getFreeSpace());
> System.out.println("getTotalSpace:
> "+f1.getTotalSpace());
> System.out.println("getUsableSpace:
> "+f1.getUsableSpace());
> f1.deleteOnExit();
> }
> }
>
> I use GNU/Linux and the problem is that the space reported by the thre
> functions is not correct. Please explain.
>

What is this program telling you and what do you think should be the
correct answer (and why)? The latter three functions are not guaranteed
to be able to get correct information (cf.
http://java.sun.com/javase/6/docs/a...l#getTotalSpace())...

Eric Sosman

2007-04-28, 10:09 pm

Ravi wrote:
> import java.io.File;
> class FileDemo {
> public static void main(String args[]) {
> File f1 = new File("/home/ravi/abc");
> System.out.println("Path: "+f1.getPath());
> System.out.println("Absolute path:
> "+f1.getAbsolutePath());
> System.out.println("Size: "+f1.length());
> System.out.println("getFreeSpace:
> "+f1.getFreeSpace());
> System.out.println("getTotalSpace:
> "+f1.getTotalSpace());
> System.out.println("getUsableSpace:
> "+f1.getUsableSpace());
> f1.deleteOnExit();
> }
> }
>
> I use GNU/Linux and the problem is that the space reported by the thre
> functions is not correct. Please explain.

What does it report, and why do you think it is wrong?

--
Eric Sosman
esosman@acm-dot-org.invalid

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