Interacting with Filesystems - Beginning Java 7 - page 696

Table 8-1 refers to IOException , which is the common exception superclass
for those exception classes that describe various kinds of I/O errors, such as
java.io.FileNotFoundException .
Listing 8-2 instantiates File with its pathname command-line argument, and calls
some of the File methods described in Table 8-1 to learn about this pathname.

Listing 8-2. Obtaining abstract pathname information

import java.io.File;
import java.io.IOException;

class PathnameInfo
{

public static void main(String[] args) throws IOExcep-
tion
{

if (args.length != 1)
{

System.err.println("usage: java PathnameInfo

pathname");
return;

}
File file = new File(args[0]);
System.out.println("Absolute

path =

"+file.getAbsolutePath());
System.out.println("Canonical

path =

"+file.getCanonicalPath());
System.out.println("Name = "+file.getName());
System.out.println("Parent = "+file.getParent());
System.out.println("Path = "+file.getPath());
System.out.println("Is

absolute =

"+file.isAbsolute());