| /* |
| * Copyright (c) 1995, 2004, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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; |
| |
| /** |
| * Thrown when an application tries to load in a class through its |
| * string name using: |
| * <ul> |
| * <li>The <code>forName</code> method in class <code>Class</code>. |
| * <li>The <code>findSystemClass</code> method in class |
| * <code>ClassLoader</code> . |
| * <li>The <code>loadClass</code> method in class <code>ClassLoader</code>. |
| * </ul> |
| * <p> |
| * but no definition for the class with the specified name could be found. |
| * |
| * <p>As of release 1.4, this exception has been retrofitted to conform to |
| * the general purpose exception-chaining mechanism. The "optional exception |
| * that was raised while loading the class" that may be provided at |
| * construction time and accessed via the {@link #getException()} method is |
| * now known as the <i>cause</i>, and may be accessed via the {@link |
| * Throwable#getCause()} method, as well as the aforementioned "legacy method." |
| * |
| * @author unascribed |
| * @see java.lang.Class#forName(java.lang.String) |
| * @see java.lang.ClassLoader#findSystemClass(java.lang.String) |
| * @see java.lang.ClassLoader#loadClass(java.lang.String, boolean) |
| * @since JDK1.0 |
| */ |
| public class ClassNotFoundException extends ReflectiveOperationException { |
| /** |
| * use serialVersionUID from JDK 1.1.X for interoperability |
| */ |
| private static final long serialVersionUID = 9176873029745254542L; |
| |
| /** |
| * This field holds the exception ex if the |
| * ClassNotFoundException(String s, Throwable ex) constructor was |
| * used to instantiate the object |
| * @serial |
| * @since 1.2 |
| */ |
| private Throwable ex; |
| |
| /** |
| * Constructs a <code>ClassNotFoundException</code> with no detail message. |
| */ |
| public ClassNotFoundException() { |
| super((Throwable)null); // Disallow initCause |
| } |
| |
| /** |
| * Constructs a <code>ClassNotFoundException</code> with the |
| * specified detail message. |
| * |
| * @param s the detail message. |
| */ |
| public ClassNotFoundException(String s) { |
| super(s, null); // Disallow initCause |
| } |
| |
| /** |
| * Constructs a <code>ClassNotFoundException</code> with the |
| * specified detail message and optional exception that was |
| * raised while loading the class. |
| * |
| * @param s the detail message |
| * @param ex the exception that was raised while loading the class |
| * @since 1.2 |
| */ |
| public ClassNotFoundException(String s, Throwable ex) { |
| super(s, null); // Disallow initCause |
| this.ex = ex; |
| } |
| |
| /** |
| * Returns the exception that was raised if an error occurred while |
| * attempting to load the class. Otherwise, returns <tt>null</tt>. |
| * |
| * <p>This method predates the general-purpose exception chaining facility. |
| * The {@link Throwable#getCause()} method is now the preferred means of |
| * obtaining this information. |
| * |
| * @return the <code>Exception</code> that was raised while loading a class |
| * @since 1.2 |
| */ |
| public Throwable getException() { |
| return ex; |
| } |
| |
| /** |
| * Returns the cause of this exception (the exception that was raised |
| * if an error occurred while attempting to load the class; otherwise |
| * <tt>null</tt>). |
| * |
| * @return the cause of this exception. |
| * @since 1.4 |
| */ |
| public Throwable getCause() { |
| return ex; |
| } |
| } |