1 /* 2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.nio.fs; 27 28 import java.util.*; 29 30 /** 31 * Utility methods 32 */ 33 34 class Util { 35 private Util() { } 36 37 /** 38 * Splits a string around the given character. The array returned by this 39 * method contains each substring that is terminated by the character. Use 40 * for simple string spilting cases when needing to avoid loading regex. 41 */ 42 static String[] split(String s, char c) { 43 int count = 0; 44 for (int i=0; i<s.length(); i++) { 45 if (s.charAt(i) == c) 46 count++; 47 } 48 String[] result = new String[count+1]; 49 int n = 0; 50 int last = 0; 51 for (int i=0; i<s.length(); i++) { 52 if (s.charAt(i) == c) { 53 result[n++] = s.substring(last, i); 54 last = i + 1; 55 } 56 } 57 result[n] = s.substring(last, s.length()); 58 return result; 59 } 60 61 /** 62 * Returns a Set containing the given elements. 63 */ 64 static <E> Set<E> newSet(E... elements) { 65 HashSet<E> set = new HashSet<>(); 66 for (E e: elements) { 67 set.add(e); 68 } 69 return set; 70 } 71 72 /** 73 * Returns a Set containing all the elements of the given Set plus 74 * the given elements. 75 */ 76 static <E> Set<E> newSet(Set<E> other, E... elements) { 77 HashSet<E> set = new HashSet<>(other); 78 for (E e: elements) { 79 set.add(e); 80 } 81 return set; 82 } 83 }