1
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.HashSet;
34 import java.util.Set;
35
36
42 public class SetUtil {
43
44 public static Set<Long> fromArray(long[] array) {
45 if ((array == null) || (array.length == 0)) {
46 return new HashSet();
47 }
48
49 Set<Long> set = new HashSet<Long>(array.length);
50
51 for (int i = 0; i < array.length; i++) {
52 set.add(array[i]);
53 }
54
55 return set;
56 }
57
58 public static Set fromArray(Object[] array) {
59 if ((array == null) || (array.length == 0)) {
60 return new HashSet();
61 }
62
63 Set set = new HashSet(array.length);
64
65 for (int i = 0; i < array.length; i++) {
66 set.add(array[i]);
67 }
68
69 return set;
70 }
71
72 public static Set fromFile(String fileName) throws IOException {
73 return fromFile(new File(fileName));
74 }
75
76 public static Set fromFile(File file) throws IOException {
77 Set set = new HashSet();
78
79 BufferedReader br = new BufferedReader(new FileReader(file));
80
81 String s = StringPool.BLANK;
82
83 while ((s = br.readLine()) != null) {
84 set.add(s);
85 }
86
87 br.close();
88
89 return set;
90 }
91
92 public static Set fromString(String s) {
93 return fromArray(StringUtil.split(s, StringPool.NEW_LINE));
94 }
95
96 }