//: MakeDirectories.java ////////////////////////////////////////////////// // Copyright (c) Bruce Eckel, 1998 // Source code file from the book "Thinking in Java" // All rights reserved EXCEPT as allowed by the // following statements: You can freely use this file // for your own work (personal or commercial), // including modifications and distribution in // executable form only. Permission is granted to use // this file in classroom situations, including its // use in presentation materials, as long as the book // "Thinking in Java" is cited as the source. // Except in classroom situations, you cannot copy // and distribute this code; instead, the sole // distribution point is http://www.BruceEckel.com // (and official mirror sites) where it is // freely available. You cannot remove this // copyright and notice. You cannot distribute // modified versions of the source code in this // package. You cannot use this file in printed // media without the express permission of the // author. Bruce Eckel makes no representation about // the suitability of this software for any purpose. // It is provided "as is" without express or implied // warranty of any kind, including any implied // warranty of merchantability, fitness for a // particular purpose or non-infringement. The entire // risk as to the quality and performance of the // software is with you. Bruce Eckel and the // publisher shall not be liable for any damages // suffered by you or any third party as a result of // using or distributing software. In no event will // Bruce Eckel or the publisher be liable for any // lost revenue, profit, or data, or for direct, // indirect, special, consequential, incidental, or // punitive damages, however caused and regardless of // the theory of liability, arising out of the use of // or inability to use software, even if Bruce Eckel // and the publisher have been advised of the // possibility of such damages. Should the software // prove defective, you assume the cost of all // necessary servicing, repair, or correction. If you // think you've found an error, please email all // modified files with clearly commented changes to: // Bruce@EckelObjects.com. (Please use the same // address for non-code errors found in the book.) ///////////////////////////////////////////////// // Demonstrates the use of the File class to // create directories and manipulate files. import java.io.*; public class MakeDirectories { private final static String usage = "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\n"; private static void usage() { System.err.println(usage); 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; } for( ; count < args.length; count++) { 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); } } } ///:~