Showing the changes to java/pkg/com/sun/jdi/ClassNotLoadedException.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2001, 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 com.sun.jdi; | |
| 27 | + | |
| 28 | +/** | |
| 29 | + * Thrown to indicate that the requested class has | |
| 30 | + * not yet been loaded through the appropriate class loader. | |
| 31 | + * <p> | |
| 32 | + * Due to the lazy class linking performed by many VMs, it is | |
| 33 | + * possible for a field or variable to be visible in a program | |
| 34 | + * before the associated class is loaded. Until the class is loaded | |
| 35 | + * all that is available is a signature string. If an attempt is made to | |
| 36 | + * set the value of such a field or variable from JDI, the appropriate | |
| 37 | + * type checking cannot be done because the destination class has not been | |
| 38 | + * loaded. The same is true for the element class of array elements. | |
| 39 | + * <p> | |
| 40 | + * It is not advisable to solve this problem by attempting a class load on | |
| 41 | + * the fly in this case. There are two problems in having the debugger load | |
| 42 | + * a class instead of waiting for it to load over the normal course | |
| 43 | + * of events. | |
| 44 | + * <ul> | |
| 45 | + * <li>There can be no guarantee that running the appropriate class | |
| 46 | + * loader won't cause a deadlock in loading the | |
| 47 | + * class. Class loaders can consist of arbitrary | |
| 48 | + * Java<sup><font size=-2>TM</font></sup> programming language code and the | |
| 49 | + * class loading methods are usually synchronized. Most of the work | |
| 50 | + * done by a debugger happens when threads are suspended. If another | |
| 51 | + * application thread is suspended within the same class loader, | |
| 52 | + * a deadlock is very possible. | |
| 53 | + * <li>Changing the order in which classes are normally loaded may either mask | |
| 54 | + * or reveal bugs in the application. An unintrusive debugger should strive | |
| 55 | + * to leave unchanged the behavior of the application being debugged. | |
| 56 | + * </ul> | |
| 57 | + * To avoid these potential problems, this exception is thrown. | |
| 58 | + * <p> | |
| 59 | + * Note that this exception will be thrown until the class in question | |
| 60 | + * is visible to the class loader of enclosing class. (That is, the | |
| 61 | + * class loader of the enclosing class must be an <i>initiating</i> class | |
| 62 | + * loader for the class in question.) | |
| 63 | + * See | |
| 64 | + * <cite>The Java™ Virtual Machine Specification</cite> | |
| 65 | + * for more details. | |
| 66 | + * | |
| 67 | + * @author Gordon Hirsch | |
| 68 | + * @since 1.3 | |
| 69 | + */ | |
| 70 | +public class ClassNotLoadedException extends Exception | |
| 71 | +{ | |
| 72 | + private String className; | |
| 73 | + | |
| 74 | + public ClassNotLoadedException(String className) { | |
| 75 | + super(); | |
| 76 | + this.className = className; | |
| 77 | + } | |
| 78 | + | |
| 79 | + public ClassNotLoadedException(String className, String message) { | |
| 80 | + super(message); | |
| 81 | + this.className = className; | |
| 82 | + } | |
| 83 | + | |
| 84 | + public String className() { | |
| 85 | + return className; | |
| 86 | + } | |
| 87 | +} | |