Here you can find the source of getRoot(final String path)
| Parameter | Description |
|---|---|
| path | The path used to get a root |
public static String getRoot(final String path)
//package com.java2s; /*/*from w w w.j av a2 s .com*/ * 20:25:20 20/05/99 * * The Java Shell: Utilities. * (C)1999 Romain Guy, Osvaldo Pinali Doederlein. * * LICENSE * ======= * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * CHANGES * ======= * 1.0.8 - Filled the listRoots method (Romain & Osvaldo) * 1.0.7 - Several bug fixes in constructPath (Romain) * 1.0.6 - Split JDK1.1/1.2 (Osvaldo) * 1.0.5 - Important bug fix in constructPath(String) (Romain) * 1.0.4 - Added getSize(Enumeration) (Osvaldo) * 1.0.3 - Changed sortStrings bubble-sort algorithm to (Romain) * quick-sort (James Gosling) * 1.0.2 - Fixed two little bug in constructPath(String) (Romain) * 1.0.1 - Added listFiles(String[], boolean) (Romain) * - Removed unecessary createWhiteSpace(int) (Romain) * - Modified getWildCardMatches(String, boolean) (Romain) * - Slighty improved javadoc comments (Romain) * 1.0.0 - Initial release. (Romain & Osvaldo) * * LINKS * ===== * Contact: mailto@osvaldo.visionnaire.com.br * Site #1: http://www.geocities.com/ResearchTriangle/Node/2005/ * Site #2: http://student.vub.ac.be/~opinalid/ */ import java.io.File; public class Main { /** * It can be necessary to determine which is the root of a path. For example, the root of D:\Projects\Java is D:\. * * @param path * The path used to get a root * @return The root which contais the specified path */ public static String getRoot(final String path) { final File roots[] = listRoots(new File(path)); for (int i = 0; i < roots.length; i++) { if (path.startsWith(roots[i].getPath())) { return roots[i].getPath(); } } return path; } /** * We override a Java2 specific method. * * @param f * A File * @return A list of standards roots */ public static File[] listRoots(final File f) { if (System.getProperty("os.name").startsWith("Windows")) { return new File[] { new File("A:\\"), new File("B:\\"), new File("C:\\"), new File("D:\\"), new File("E:\\"), new File("F:\\"), new File("G:\\"), new File("H:\\"), new File("I:\\") }; //return new File[]{new File(System.getProperty("java.home").substring(0, 3))}; } else { return new File[] { new File("/") }; } } }