DefaultMapEntry.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.keyvalue;
- import java.util.Map;
- import org.apache.commons.collections4.KeyValue;
- /**
- * A restricted implementation of {@link java.util.Map.Entry Map.Entry} that prevents
- * the {@link java.util.Map.Entry Map.Entry} contract from being broken.
- *
- * @param <K> the type of keys
- * @param <V> the type of mapped values
- * @since 3.0
- */
- public final class DefaultMapEntry<K, V> extends AbstractMapEntry<K, V> {
- /**
- * Constructs a new entry with the specified key and given value.
- *
- * @param key the key for the entry, may be null
- * @param value the value for the entry, may be null
- */
- public DefaultMapEntry(final K key, final V value) {
- super(key, value);
- }
- /**
- * Constructs a new entry from the specified {@code KeyValue}.
- *
- * @param pair the pair to copy, must not be null
- * @throws NullPointerException if the entry is null
- */
- public DefaultMapEntry(final KeyValue<? extends K, ? extends V> pair) {
- super(pair.getKey(), pair.getValue());
- }
- /**
- * Constructs a new entry from the specified {@code Map.Entry}.
- *
- * @param entry the entry to copy, must not be null
- * @throws NullPointerException if the entry is null
- */
- public DefaultMapEntry(final Map.Entry<? extends K, ? extends V> entry) {
- super(entry.getKey(), entry.getValue());
- }
- }