com.fitbur.apache.commons.lang.mutable.Mutable Maven / Gradle / Ivy
/*
* 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 com.fitburpliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.fitbur/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 com.fitbur.apache.com.fitburmons.lang.mutable;
/**
* Provides mutable access to a value.
*
* Mutable is used as a generic interface to the implementations in this package.
*
* A typical use case would be to enable a primitive or string to be passed to a method and allow that method to
* effectively change the value of the primitive/string. Another use case is to store a frequently changing primitive in
* a collection (for example a total in a map) without needing to create new Integer/Long wrapper objects.
*
* @author Apache Software Foundation
* @author Matthew Hawthorne
* @since 2.1
* @version $Id: Mutable.java 905636 2010-02-02 14:03:32Z niallp $
*/
public interface Mutable {
/**
* Gets the value of this mutable.
*
* @return the stored value
*/
Object getValue();
/**
* Sets the value of this mutable.
*
* @param value
* the value to store
* @throws NullPointerException
* if the object is null and null is invalid
* @throws ClassCastException
* if the type is invalid
*/
void setValue(Object value);
}