Showing the changes to java/pkg/sun/util/ResourceBundleEnumeration.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 2001, 2005, 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.util; | ||
| 27 | |||
| 28 | import java.util.Enumeration; | ||
| 29 | import java.util.Iterator; | ||
| 30 | import java.util.NoSuchElementException; | ||
| 31 | import java.util.Set; | ||
| 32 | |||
| 33 | /** | ||
| 34 | * Implements an Enumeration that combines elements from a Set and | ||
| 35 | * an Enumeration. Used by ListResourceBundle and PropertyResourceBundle. | ||
| 36 | */ | ||
| 37 | public class ResourceBundleEnumeration implements Enumeration<String> { | ||
| 38 | |||
| 39 | Set<String> set; | ||
| 40 | Iterator<String> iterator; | ||
| 41 | Enumeration<String> enumeration; // may remain null | ||
| 42 | |||
| 43 | /** | ||
| 44 | * Constructs a resource bundle enumeration. | ||
| 45 | * @param set an set providing some elements of the enumeration | ||
| 46 | * @param enumeration an enumeration providing more elements of the enumeration. | ||
| 47 | * enumeration may be null. | ||
| 48 | */ | ||
| 49 | public ResourceBundleEnumeration(Set<String> set, Enumeration<String> enumeration) { | ||
| 50 | this.set = set; | ||
| 51 | this.iterator = set.iterator(); | ||
| 52 | this.enumeration = enumeration; | ||
| 53 | } | ||
| 54 | |||
| 55 | String next = null; | ||
| 56 | |||
| 57 | public boolean hasMoreElements() { | ||
| 58 | if (next == null) { | ||
| 59 | if (iterator.hasNext()) { | ||
| 60 | next = iterator.next(); | ||
| 61 | } else if (enumeration != null) { | ||
| 62 | while (next == null && enumeration.hasMoreElements()) { | ||
| 63 | next = enumeration.nextElement(); | ||
| 64 | if (set.contains(next)) { | ||
| 65 | next = null; | ||
| 66 | } | ||
| 67 | } | ||
| 68 | } | ||
| 69 | } | ||
| 70 | return next != null; | ||
| 71 | } | ||
| 72 | |||
| 73 | public String nextElement() { | ||
| 74 | if (hasMoreElements()) { | ||
| 75 | String result = next; | ||
| 76 | next = null; | ||
| 77 | return result; | ||
| 78 | } else { | ||
| 79 | throw new NoSuchElementException(); | ||
| 80 | } | ||
| 81 | } | ||
| 82 | } | ||