ResourceBundleEnumeration.java revision 2362
0N/A/*
2362N/A * Copyright (c) 2001, 2005, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.util;
0N/A
0N/Aimport java.util.Enumeration;
0N/Aimport java.util.Iterator;
0N/Aimport java.util.NoSuchElementException;
0N/Aimport java.util.Set;
0N/A
0N/A/**
0N/A * Implements an Enumeration that combines elements from a Set and
0N/A * an Enumeration. Used by ListResourceBundle and PropertyResourceBundle.
0N/A */
0N/Apublic class ResourceBundleEnumeration implements Enumeration<String> {
0N/A
0N/A Set<String> set;
0N/A Iterator<String> iterator;
0N/A Enumeration<String> enumeration; // may remain null
0N/A
0N/A /**
0N/A * Constructs a resource bundle enumeration.
0N/A * @param set an set providing some elements of the enumeration
0N/A * @param enumeration an enumeration providing more elements of the enumeration.
0N/A * enumeration may be null.
0N/A */
0N/A public ResourceBundleEnumeration(Set<String> set, Enumeration<String> enumeration) {
0N/A this.set = set;
0N/A this.iterator = set.iterator();
0N/A this.enumeration = enumeration;
0N/A }
0N/A
0N/A String next = null;
0N/A
0N/A public boolean hasMoreElements() {
0N/A if (next == null) {
0N/A if (iterator.hasNext()) {
0N/A next = iterator.next();
0N/A } else if (enumeration != null) {
0N/A while (next == null && enumeration.hasMoreElements()) {
0N/A next = enumeration.nextElement();
0N/A if (set.contains(next)) {
0N/A next = null;
0N/A }
0N/A }
0N/A }
0N/A }
0N/A return next != null;
0N/A }
0N/A
0N/A public String nextElement() {
0N/A if (hasMoreElements()) {
0N/A String result = next;
0N/A next = null;
0N/A return result;
0N/A } else {
0N/A throw new NoSuchElementException();
0N/A }
0N/A }
0N/A}