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Collections:
Other Resources:
commons-collections4-4.2-sources.jar - Apache Commons Collections
commons-collections4-4.2-sources.jar is the source JAR file for Apache Commons Collections 4.2, which
provides additional collection handling functionalities on top of JDK library.
JAR File Size and Download Location:
JAR name: commons-collections4-4.2-sources.jar Target JDK version: 1.7 Dependency: None File size: 708,599 bytes Release date: 08-Jul-2018 Download: Apache Commons Collections
✍: FYIcenter.com
⏎ org/apache/commons/collections4/iterators/EnumerationIterator.java
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.collections4.iterators; import java.util.Collection; import java.util.Enumeration; import java.util.Iterator; /** * Adapter to make {@link Enumeration Enumeration} instances appear * to be {@link Iterator Iterator} instances. * * @since 1.0 */ public class EnumerationIterator<E> implements Iterator<E> { /** The collection to remove elements from */ private final Collection<? super E> collection; /** The enumeration being converted */ private Enumeration<? extends E> enumeration; /** The last object retrieved */ private E last; // Constructors //----------------------------------------------------------------------- /** * Constructs a new <code>EnumerationIterator</code> that will not * function until {@link #setEnumeration(Enumeration)} is called. */ public EnumerationIterator() { this(null, null); } /** * Constructs a new <code>EnumerationIterator</code> that provides * an iterator view of the given enumeration. * * @param enumeration the enumeration to use */ public EnumerationIterator(final Enumeration<? extends E> enumeration) { this(enumeration, null); } /** * Constructs a new <code>EnumerationIterator</code> that will remove * elements from the specified collection. * * @param enumeration the enumeration to use * @param collection the collection to remove elements from */ public EnumerationIterator(final Enumeration<? extends E> enumeration, final Collection<? super E> collection) { super(); this.enumeration = enumeration; this.collection = collection; this.last = null; } // Iterator interface //----------------------------------------------------------------------- /** * Returns true if the underlying enumeration has more elements. * * @return true if the underlying enumeration has more elements * @throws NullPointerException if the underlying enumeration is null */ @Override public boolean hasNext() { return enumeration.hasMoreElements(); } /** * Returns the next object from the enumeration. * * @return the next object from the enumeration * @throws NullPointerException if the enumeration is null */ @Override public E next() { last = enumeration.nextElement(); return last; } /** * Removes the last retrieved element if a collection is attached. * <p> * Functions if an associated <code>Collection</code> is known. * If so, the first occurrence of the last returned object from this * iterator will be removed from the collection. * * @throws IllegalStateException <code>next()</code> not called. * @throws UnsupportedOperationException if no associated collection */ @Override public void remove() { if (collection != null) { if (last != null) { collection.remove(last); } else { throw new IllegalStateException("next() must have been called for remove() to function"); } } else { throw new UnsupportedOperationException("No Collection associated with this Iterator"); } } // Properties //----------------------------------------------------------------------- /** * Returns the underlying enumeration. * * @return the underlying enumeration */ public Enumeration<? extends E> getEnumeration() { return enumeration; } /** * Sets the underlying enumeration. * * @param enumeration the new underlying enumeration */ public void setEnumeration(final Enumeration<? extends E> enumeration) { this.enumeration = enumeration; } }
⏎ org/apache/commons/collections4/iterators/EnumerationIterator.java
Or download all of them as a single archive file:
File name: commons-collections4-4.2-sources.jar File size: 708599 bytes Release date: 2018-07-08 Download
⇒ Download and Install commons-collections4-4.1-bin.zip
⇐ What Is commons-collections4-4.2.jar
2023-03-28, 42048👍, 0💬
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