MakeDirectories.java Source code

Introduction

Here is the source code for MakeDirectories.java

Source

// : c12:MakeDirectories.java
// Demonstrates the use of the File class to
// create directories and manipulate files.
// {Args: MakeDirectoriesTest}
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.io.File;

public class MakeDirectories {

    private static void usage() {
        System.err.println("Usage:MakeDirectories path1 ...\n" + "Creates each path\n"
                + "Usage:MakeDirectories -d path1 ...\n" + "Deletes each path\n"
                + "Usage:MakeDirectories -r path1 path2\n" + "Renames from path1 to path2");
        System.exit(1);
    }

    private static void fileData(File f) {
        System.out.println("Absolute path: " + f.getAbsolutePath() + "\n Can read: " + f.canRead()
                + "\n Can write: " + f.canWrite() + "\n getName: " + f.getName() + "\n getParent: " + f.getParent()
                + "\n getPath: " + f.getPath() + "\n length: " + f.length() + "\n lastModified: "
                + f.lastModified());
        if (f.isFile())
            System.out.println("It's a file");
        else if (f.isDirectory())
            System.out.println("It's a directory");
    }

    public static void main(String[] args) {
        if (args.length < 1)
            usage();
        if (args[0].equals("-r")) {
            if (args.length != 3)
                usage();
            File old = new File(args[1]), rname = new File(args[2]);
            old.renameTo(rname);
            fileData(old);
            fileData(rname);
            return; // Exit main
        }
        int count = 0;
        boolean del = false;
        if (args[0].equals("-d")) {
            count++;
            del = true;
        }
        count--;
        while (++count < args.length) {
            File f = new File(args[count]);
            if (f.exists()) {
                System.out.println(f + " exists");
                if (del) {
                    System.out.println("deleting..." + f);
                    f.delete();
                }
            } else { // Doesn't exist
                if (!del) {
                    f.mkdirs();
                    System.out.println("created " + f);
                }
            }
            fileData(f);
        }
    }
} ///:~