/*
 * T03n01.java -- Display information about a file whose name is entered
 * by the user, using the File object instance methods.  Further, if the
 * file is a directory, display the files stored within it.
 *
 * Yes, there are things that are neither files nor directories.
 * Interestingly (to me, anyway), is that a symbolic link counts as a 
 * directory if it links to a directory.  At the moment, I don't know
 * how to distinguish it from a real directory in Java, but I'm sure that
 * it can be done.
 */

import java.io.*;    // For File
import java.util.*;  // For Scanner

public class T03n01
{
    public static void main (String [] args)
    {
        File     fileRef;
        String   fileName;
        String[] fileNameList;
        Scanner  keyboard = new Scanner (System.in);

        System.out.print("Enter the name of a file; feel free to include\n"
                       + "path information as part of the name : ");
        fileName = keyboard.nextLine();
        fileRef = new File(fileName);

        System.out.println("\n" + fileName + ":");

        if (fileRef.exists()) {

            if (fileRef.isFile()) {

                System.out.println("\t...is a normal file.");
                System.out.println("\t...contains " + fileRef.length() 
                                 + " bytes.");

                if (fileRef.canRead()) {
                    System.out.println("\t...can be read from.");
                }

                if (fileRef.canWrite()) {
                    System.out.println("\t...can be written to.");
                }

            } else if (fileRef.isDirectory()) {

                System.out.println("\t...is a directory.");
                System.out.println("\t...contains these files:");

                fileNameList = fileRef.list();
                for (int i = 0; i < fileNameList.length; i++) {
                    System.out.println("\t\t" + fileNameList[i]);
                }

            } else {

                System.out.println("\t...exists, but I don't know what "
                                 + "it is!");
            }

        } else {    // the filename doesn't match with an existing file

            System.out.println("\t...is not an existing file or directory.");

        }
    }
}