SetUtil.java |
1 /** 2 * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a copy 5 * of this software and associated documentation files (the "Software"), to deal 6 * in the Software without restriction, including without limitation the rights 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 * copies of the Software, and to permit persons to whom the Software is 9 * furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package com.liferay.util; 24 25 import com.liferay.portal.kernel.util.StringPool; 26 import com.liferay.portal.kernel.util.StringUtil; 27 28 import java.io.BufferedReader; 29 import java.io.File; 30 import java.io.FileReader; 31 import java.io.IOException; 32 33 import java.util.Set; 34 35 /** 36 * <a href="SetUtil.java.html"><b><i>View Source</i></b></a> 37 * 38 * @author Brian Wing Shun Chan 39 * 40 */ 41 public class SetUtil { 42 43 public static Set fromArray(Object[] array) { 44 if ((array == null) || (array.length == 0)) { 45 return CollectionFactory.getHashSet(); 46 } 47 48 Set set = CollectionFactory.getHashSet(array.length); 49 50 for (int i = 0; i < array.length; i++) { 51 set.add(array[i]); 52 } 53 54 return set; 55 } 56 57 public static Set fromFile(String fileName) throws IOException { 58 return fromFile(new File(fileName)); 59 } 60 61 public static Set fromFile(File file) throws IOException { 62 Set set = CollectionFactory.getHashSet(); 63 64 BufferedReader br = new BufferedReader(new FileReader(file)); 65 66 String s = StringPool.BLANK; 67 68 while ((s = br.readLine()) != null) { 69 set.add(s); 70 } 71 72 br.close(); 73 74 return set; 75 } 76 77 public static Set fromString(String s) { 78 return fromArray(StringUtil.split(s, StringPool.NEW_LINE)); 79 } 80 81 }