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1 /* |
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2 * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package java.lang; |
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27 |
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28 /** |
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29 * An {@code Error} is a subclass of {@code Throwable} |
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30 * that indicates serious problems that a reasonable application |
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31 * should not try to catch. Most such errors are abnormal conditions. |
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32 * The {@code ThreadDeath} error, though a "normal" condition, |
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33 * is also a subclass of {@code Error} because most applications |
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34 * should not try to catch it. |
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35 * <p> |
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36 * A method is not required to declare in its {@code throws} |
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37 * clause any subclasses of {@code Error} that might be thrown |
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38 * during the execution of the method but not caught, since these |
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39 * errors are abnormal conditions that should never occur. |
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40 * |
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41 * That is, {@code Error} and its subclasses are regarded as unchecked |
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42 * exceptions for the purposes of compile-time checking of exceptions. |
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43 * |
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44 * @author Frank Yellin |
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45 * @see java.lang.ThreadDeath |
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46 * @jls 11.2 Compile-Time Checking of Exceptions |
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47 * @since 1.0 |
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48 */ |
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49 public class Error extends Throwable { |
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50 static final long serialVersionUID = 4980196508277280342L; |
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51 |
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52 /** |
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53 * Constructs a new error with {@code null} as its detail message. |
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54 * The cause is not initialized, and may subsequently be initialized by a |
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55 * call to {@link #initCause}. |
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56 */ |
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57 public Error() { |
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58 super(); |
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59 } |
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60 |
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61 /** |
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62 * Constructs a new error with the specified detail message. The |
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63 * cause is not initialized, and may subsequently be initialized by |
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64 * a call to {@link #initCause}. |
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65 * |
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66 * @param message the detail message. The detail message is saved for |
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67 * later retrieval by the {@link #getMessage()} method. |
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68 */ |
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69 public Error(String message) { |
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70 super(message); |
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71 } |
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72 |
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73 /** |
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74 * Constructs a new error with the specified detail message and |
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75 * cause. <p>Note that the detail message associated with |
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76 * {@code cause} is <i>not</i> automatically incorporated in |
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77 * this error's detail message. |
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78 * |
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79 * @param message the detail message (which is saved for later retrieval |
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80 * by the {@link #getMessage()} method). |
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81 * @param cause the cause (which is saved for later retrieval by the |
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82 * {@link #getCause()} method). (A {@code null} value is |
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83 * permitted, and indicates that the cause is nonexistent or |
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84 * unknown.) |
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85 * @since 1.4 |
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86 */ |
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87 public Error(String message, Throwable cause) { |
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88 super(message, cause); |
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89 } |
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90 |
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91 /** |
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92 * Constructs a new error with the specified cause and a detail |
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93 * message of {@code (cause==null ? null : cause.toString())} (which |
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94 * typically contains the class and detail message of {@code cause}). |
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95 * This constructor is useful for errors that are little more than |
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96 * wrappers for other throwables. |
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97 * |
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98 * @param cause the cause (which is saved for later retrieval by the |
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99 * {@link #getCause()} method). (A {@code null} value is |
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100 * permitted, and indicates that the cause is nonexistent or |
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101 * unknown.) |
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102 * @since 1.4 |
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103 */ |
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104 public Error(Throwable cause) { |
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105 super(cause); |
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106 } |
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107 |
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108 /** |
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109 * Constructs a new error with the specified detail message, |
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110 * cause, suppression enabled or disabled, and writable stack |
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111 * trace enabled or disabled. |
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112 * |
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113 * @param message the detail message. |
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114 * @param cause the cause. (A {@code null} value is permitted, |
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115 * and indicates that the cause is nonexistent or unknown.) |
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116 * @param enableSuppression whether or not suppression is enabled |
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117 * or disabled |
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118 * @param writableStackTrace whether or not the stack trace should |
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119 * be writable |
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120 * |
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121 * @since 1.7 |
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122 */ |
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123 protected Error(String message, Throwable cause, |
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124 boolean enableSuppression, |
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125 boolean writableStackTrace) { |
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126 super(message, cause, enableSuppression, writableStackTrace); |
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127 } |
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128 } |