1 /* 2 * Copyright (c) 1995, 2011, 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 package java.lang; 27 28 /** 29 * {@code RuntimeException} is the superclass of those 30 * exceptions that can be thrown during the normal operation of the 31 * Java Virtual Machine. 32 * 33 * <p>{@code RuntimeException} and its subclasses are <em>unchecked 34 * exceptions</em>. Unchecked exceptions do <em>not</em> need to be 35 * declared in a method or constructor's {@code throws} clause if they 36 * can be thrown by the execution of the method or constructor and 37 * propagate outside the method or constructor boundary. 38 * 39 * @author Frank Yellin 40 * @jls 11.2 Compile-Time Checking of Exceptions 41 * @since JDK1.0 42 */ 43 public class RuntimeException extends Exception { 44 static final long serialVersionUID = -7034897190745766939L; 45 46 /** Constructs a new runtime exception with {@code null} as its 47 * detail message. The cause is not initialized, and may subsequently be 48 * initialized by a call to {@link #initCause}. 49 */ RuntimeException()50 public RuntimeException() { 51 super(); 52 } 53 54 /** Constructs a new runtime exception with the specified detail message. 55 * The cause is not initialized, and may subsequently be initialized by a 56 * call to {@link #initCause}. 57 * 58 * @param message the detail message. The detail message is saved for 59 * later retrieval by the {@link #getMessage()} method. 60 */ RuntimeException(String message)61 public RuntimeException(String message) { 62 super(message); 63 } 64 65 /** 66 * Constructs a new runtime exception with the specified detail message and 67 * cause. <p>Note that the detail message associated with 68 * {@code cause} is <i>not</i> automatically incorporated in 69 * this runtime exception's detail message. 70 * 71 * @param message the detail message (which is saved for later retrieval 72 * by the {@link #getMessage()} method). 73 * @param cause the cause (which is saved for later retrieval by the 74 * {@link #getCause()} method). (A <tt>null</tt> value is 75 * permitted, and indicates that the cause is nonexistent or 76 * unknown.) 77 * @since 1.4 78 */ RuntimeException(String message, Throwable cause)79 public RuntimeException(String message, Throwable cause) { 80 super(message, cause); 81 } 82 83 /** Constructs a new runtime exception with the specified cause and a 84 * detail message of <tt>(cause==null ? null : cause.toString())</tt> 85 * (which typically contains the class and detail message of 86 * <tt>cause</tt>). This constructor is useful for runtime exceptions 87 * that are little more than wrappers for other throwables. 88 * 89 * @param cause the cause (which is saved for later retrieval by the 90 * {@link #getCause()} method). (A <tt>null</tt> value is 91 * permitted, and indicates that the cause is nonexistent or 92 * unknown.) 93 * @since 1.4 94 */ RuntimeException(Throwable cause)95 public RuntimeException(Throwable cause) { 96 super(cause); 97 } 98 99 /** 100 * Constructs a new runtime exception with the specified detail 101 * message, cause, suppression enabled or disabled, and writable 102 * stack trace enabled or disabled. 103 * 104 * @param message the detail message. 105 * @param cause the cause. (A {@code null} value is permitted, 106 * and indicates that the cause is nonexistent or unknown.) 107 * @param enableSuppression whether or not suppression is enabled 108 * or disabled 109 * @param writableStackTrace whether or not the stack trace should 110 * be writable 111 * 112 * @since 1.7 113 */ RuntimeException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace)114 protected RuntimeException(String message, Throwable cause, 115 boolean enableSuppression, 116 boolean writableStackTrace) { 117 super(message, cause, enableSuppression, writableStackTrace); 118 } 119 } 120