001/* AssertionError.java -- indication of a failed assertion 002 Copyright (C) 2002, 2005 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package java.lang; 040 041/** 042 * An assertion error normally occurs as a result of the <code>assert</code> 043 * statement added in JDK 1.4, to indicate that an assertion failed. There 044 * are enough constructors to ensure that 045 * <code>new AssertionError(<em>expression</em>)</code> will work for all 046 * expressions, regardless of type, as if the error message were given by 047 * the string <code>"" + <em>expression</em></code>. This extends Error, 048 * because you usually do not want to inadvertently trap an assertion failure. 049 * 050 * @author Eric Blake (ebb9@email.byu.edu) 051 * @since 1.4 052 * @status updated to 1.4 053 */ 054public class AssertionError extends Error 055{ 056 /** 057 * Compatible with JDK 1.4+. 058 */ 059 private static final long serialVersionUID = -5013299493970297370L; 060 061 /** 062 * Construct an AssertionError with no detail message. 063 */ 064 public AssertionError() 065 { 066 } 067 068 /** 069 * Construct an AssertionError with the string conversion of the given 070 * object as its error message. If the object is a Throwable, it is also 071 * set as the cause of this error. 072 * 073 * @param msg the source of the error message 074 * @see Throwable#getCause() 075 */ 076 public AssertionError(Object msg) 077 { 078 super("" + msg); 079 if (msg instanceof Throwable) 080 initCause((Throwable) msg); 081 } 082 083 /** 084 * Construct an AssertionError with the string conversion of the given 085 * boolean as its error message. 086 * 087 * @param msg the source of the error message 088 */ 089 public AssertionError(boolean msg) 090 { 091 super(msg ? "true" : "false"); 092 } 093 094 /** 095 * Construct an AssertionError with the string conversion of the given 096 * char as its error message. 097 * 098 * @param msg the source of the error message 099 */ 100 public AssertionError(char msg) 101 { 102 super(String.valueOf(msg)); 103 } 104 105 /** 106 * Construct an AssertionError with the string conversion of the given 107 * int as its error message. 108 * 109 * @param msg the source of the error message 110 */ 111 public AssertionError(int msg) 112 { 113 super(Integer.toString(msg, 10)); 114 } 115 116 /** 117 * Construct an AssertionError with the string conversion of the given 118 * long as its error message. 119 * 120 * @param msg the source of the error message 121 */ 122 public AssertionError(long msg) 123 { 124 super(Long.toString(msg)); 125 } 126 127 /** 128 * Construct an AssertionError with the string conversion of the given 129 * float as its error message. 130 * 131 * @param msg the source of the error message 132 */ 133 public AssertionError(float msg) 134 { 135 super(Float.toString(msg)); 136 } 137 138 /** 139 * Construct an AssertionError with the string conversion of the given 140 * double as its error message. 141 * 142 * @param msg the source of the error message 143 */ 144 public AssertionError(double msg) 145 { 146 super(Double.toString(msg)); 147 } 148}