1 /* 2 * Copyright (c) 1996, 2019, 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 * </UL> 37 * 38 * @author unascribed 39 * @since 1.1 40 */ 41 public class InvalidClassException extends ObjectStreamException { 42 43 @java.io.Serial 44 private static final long serialVersionUID = -4333316296251054416L; 45 46 /** 47 * Name of the invalid class. 48 * 49 * @serial Name of the invalid class. 50 */ 51 public String classname; 52 53 /** 54 * Report an InvalidClassException for the reason specified. 55 * 56 * @param reason String describing the reason for the exception. 57 */ 58 public InvalidClassException(String reason) { 59 super(reason); 60 } 61 62 /** 63 * Constructs an InvalidClassException object. 64 * 65 * @param cname a String naming the invalid class. 66 * @param reason a String describing the reason for the exception. 67 */ 68 public InvalidClassException(String cname, String reason) { 69 super(reason); 70 classname = cname; 71 } 72 73 /** 74 * Produce the message and include the classname, if present. 75 */ 76 public String getMessage() { 77 if (classname == null) 78 return super.getMessage(); 79 else 80 return classname + "; " + super.getMessage(); 81 } 82 }