/* * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.lang; import jdk.internal.javac.PreviewFeature; /** * Thrown when an identity object is required but a value object is supplied. *
* Identity objects are required for synchronization and locking. * Value-based * objects do not have identity and cannot be used for synchronization or locking. * * @since Valhalla */ @PreviewFeature(feature = PreviewFeature.Feature.VALUE_OBJECTS) public class IdentityException extends RuntimeException { @java.io.Serial private static final long serialVersionUID = 1L; /** * Create an {@code IdentityException} with no message. */ public IdentityException() { } /** * Create an {@code IdentityException} with the class name and default message. * * @param clazz the class of the object */ public IdentityException(Class> clazz) { super(clazz.getName() + " is not an identity class"); } /** * Create an {@code IdentityException} with a message. * * @param message the detail message; can be {@code null} */ public IdentityException(String message) { super(message); } /** * Create an {@code IdentityException} with a cause. * * @param cause the cause; {@code null} is permitted, and indicates * that the cause is nonexistent or unknown. */ public IdentityException(Throwable cause) { super(cause); } /** * Create an {@code IdentityException} with a message and cause. * * @param message the detail message; can be {@code null} * @param cause the cause; {@code null} is permitted, and indicates * that the cause is nonexistent or unknown. */ public IdentityException(String message, Throwable cause) { super(message, cause); } }