org.apache.commons.collections.keyvalue.UnmodifiableMapEntry Maven / Gradle / Ivy
Go to download
This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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.collections.keyvalue;
import java.util.Map;
import org.apache.commons.collections.KeyValue;
import org.apache.commons.collections.Unmodifiable;
/**
* A {@link java.util.Map.Entry Map.Entry} that throws
* UnsupportedOperationException when setValue
is called.
*
* @since Commons Collections 3.0
* @version $Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
*
* @author Stephen Colebourne
*/
public final class UnmodifiableMapEntry extends AbstractMapEntry implements Unmodifiable {
/**
* 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 UnmodifiableMapEntry(final Object key, final Object value) {
super(key, value);
}
/**
* Constructs a new entry from the specified KeyValue
.
*
* @param pair the pair to copy, must not be null
* @throws NullPointerException if the entry is null
*/
public UnmodifiableMapEntry(final KeyValue pair) {
super(pair.getKey(), pair.getValue());
}
/**
* Constructs a new entry from the specified Map.Entry
.
*
* @param entry the entry to copy, must not be null
* @throws NullPointerException if the entry is null
*/
public UnmodifiableMapEntry(final Map.Entry entry) {
super(entry.getKey(), entry.getValue());
}
/**
* Throws UnsupportedOperationException.
*
* @param value the new value
* @return the previous value
* @throws UnsupportedOperationException always
*/
public Object setValue(Object value) {
throw new UnsupportedOperationException("setValue() is not supported");
}
}