1 /* 2 * Copyright (c) 1996, 2020, 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.io; 27 28 /** 29 * Thrown when the Serialization runtime detects one of the following 30 * problems with a Class. 31 * <UL> 32 * <LI> The serial version of the class does not match that of the class 33 * descriptor read from the stream 34 * <LI> The class contains unknown datatypes 35 * <LI> The class does not have an accessible no-arg constructor 36 * <LI> The ObjectStreamClass of an enum constant does not represent 37 * an enum type 38 * <LI> Other conditions given in the <cite>Java Object Serialization 39 * Specification</cite> 40 * </UL> 41 * 42 * @since 1.1 43 */ 44 public class InvalidClassException extends ObjectStreamException { 45 46 @java.io.Serial 47 private static final long serialVersionUID = -4333316296251054416L; 48 49 /** 50 * Name of the invalid class. 51 * 52 * @serial Name of the invalid class. 53 */ 54 public String classname; 55 56 /** 57 * Report an InvalidClassException for the reason specified. 58 * 59 * @param reason String describing the reason for the exception. 60 */ InvalidClassException(String reason)61 public InvalidClassException(String reason) { 62 super(reason); 63 } 64 65 /** 66 * Constructs an InvalidClassException object. 67 * 68 * @param cname a String naming the invalid class. 69 * @param reason a String describing the reason for the exception. 70 */ InvalidClassException(String cname, String reason)71 public InvalidClassException(String cname, String reason) { 72 super(reason); 73 classname = cname; 74 } 75 76 /** 77 * Produce the message and include the classname, if present. 78 */ getMessage()79 public String getMessage() { 80 if (classname == null) 81 return super.getMessage(); 82 else 83 return classname + "; " + super.getMessage(); 84 } 85 } 86