1 /*
   2  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * This file is available under and governed by the GNU General Public
  28  * License version 2 only, as published by the Free Software Foundation.
  29  * However, the following notice accompanied the original version of this
  30  * file:
  31  *
  32  * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos
  33  *
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions are met:
  38  *
  39  *  * Redistributions of source code must retain the above copyright notice,
  40  *    this list of conditions and the following disclaimer.
  41  *
  42  *  * Redistributions in binary form must reproduce the above copyright notice,
  43  *    this list of conditions and the following disclaimer in the documentation
  44  *    and/or other materials provided with the distribution.
  45  *
  46  *  * Neither the name of JSR-310 nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  54  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  55  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  56  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  57  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  58  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  59  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  60  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  */
  62 package java.time.format;
  63 
  64 import java.io.IOException;
  65 import java.time.DateTimeException;
  66 
  67 /**
  68  * An exception thrown when an error occurs during printing.
  69  * <p>
  70  * This will be triggered by violations specific to printing or an IO exception.
  71  *
  72  * <h3>Specification for implementors</h3>
  73  * This class is intended for use in a single thread.
  74  *
  75  * @since 1.8
  76  */
  77 public class DateTimePrintException extends DateTimeException {
  78 
  79     /**
  80      * Serialization version.
  81      */
  82     private static final long serialVersionUID = 2263939197574006408L;
  83 
  84     /**
  85      * Constructs a new exception with the specified message.
  86      *
  87      * @param message  the message to use for this exception, may be null
  88      */
  89     public DateTimePrintException(String message) {
  90         super(message, null);
  91     }
  92 
  93     /**
  94      * Constructs a new exception with the specified message and cause.
  95      *
  96      * @param message  the message to use for this exception, may be null
  97      * @param cause  the cause of the exception, may be null
  98      */
  99     public DateTimePrintException(String message, Throwable cause) {
 100         super(message, cause);
 101     }
 102 
 103     //-----------------------------------------------------------------------
 104     /**
 105      * Checks if the cause of this exception was an IOException, and if so
 106      * re-throws it
 107      * <p>
 108      * This method is useful if you call a printer with an open stream or
 109      * writer and want to ensure that IOExceptions are not lost.
 110      * <pre>
 111      * try {
 112      *   printer.print(writer, dateTime);
 113      * } catch (DateTimePrintException ex) {
 114      *   ex.rethrowIOException();
 115      *   // if code reaches here exception was caused by date-time issues
 116      * }
 117      * </pre>
 118      * Note that calling this method will re-throw the original IOException,
 119      * causing this DateTimePrintException to be lost.
 120      *
 121      * @throws IOException if the cause of this exception is an IOException
 122      */
 123     public void rethrowIOException() throws IOException {
 124         if (getCause() instanceof IOException) {
 125             throw (IOException) getCause();
 126         }
 127     }
 128 
 129 }