Moving NullArgumentException to backcompat
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@796064 13f79535-47bb-0310-9956-ffa450edef68
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.commons.lang;
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/**
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* <p>Thrown to indicate that an argument was <code>null</code> and should
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* not have been.
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* This exception supplements the standard <code>IllegalArgumentException</code>
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* by providing a more semantically rich description of the problem.</p>
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*
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* <p><code>NullArgumentException</code> represents the case where a method takes
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* in a parameter that must not be <code>null</code>.
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* Some coding standards would use <code>NullPointerException</code> for this case,
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* others will use <code>IllegalArgumentException</code>.
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* Thus this exception would be used in place of
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* <code>IllegalArgumentException</code>, yet it still extends it.</p>
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*
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* <pre>
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* public void foo(String str) {
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* if (str == null) {
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* throw new NullArgumentException("str");
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* }
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* // do something with the string
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* }
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* </pre>
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*
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* @author Matthew Hawthorne
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* @author Stephen Colebourne
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* @since 2.0
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* @version $Id$
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*/
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public class NullArgumentException extends IllegalArgumentException {
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/**
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* Required for serialization support.
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*
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* @see java.io.Serializable
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*/
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private static final long serialVersionUID = 1174360235354917591L;
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/**
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* <p>Instantiates with the given argument name.</p>
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*
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* @param argName the name of the argument that was <code>null</code>.
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*/
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public NullArgumentException(String argName) {
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super((argName == null ? "Argument" : argName) + " must not be null.");
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}
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}
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