001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.commons.math.exception;
018
019 import org.apache.commons.math.exception.util.Localizable;
020 import org.apache.commons.math.exception.util.LocalizedFormats;
021
022 /**
023 * All conditions checks that fail due to a {@code null} argument must throw
024 * this exception.
025 * This class is meant to signal a precondition violation ("null is an illegal
026 * argument") and so does not extend the standard {@code NullPointerException}.
027 * Proagation of {@code NullPointerException} from within Commons-Math is
028 * construed to be a bug.
029 *
030 * @since 2.2
031 * @version $Revision$ $Date$
032 */
033 public class NullArgumentException extends MathIllegalArgumentException {
034 /** Serializable version Id. */
035 private static final long serialVersionUID = -6024911025449780478L;
036
037 /**
038 * Default constructor.
039 */
040 public NullArgumentException() {
041 super(LocalizedFormats.NULL_NOT_ALLOWED);
042 }
043 /**
044 * @param specific Message pattern providing the specific context of
045 * the error.
046 */
047 public NullArgumentException(Localizable specific) {
048 super(specific, LocalizedFormats.NULL_NOT_ALLOWED);
049 }
050 }