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