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1: /* ClassNotFoundException.java -- thrown when class definition cannot be found 2: Copyright (C) 1998, 2002, 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package java.lang; 40: 41: /** 42: * Thrown when a class is requested by reflection, but the class definition 43: * cannot be found. This exception is often chained from another Throwable. 44: * 45: * @author Brian Jones 46: * @author Eric Blake (ebb9@email.byu.edu) 47: * @see Class#forName(String) 48: * @see ClassLoader#findSystemClass(String) 49: * @see ClassLoader#loadClass(String, boolean) 50: * @status updated to 1.4 51: */ 52: public class ClassNotFoundException extends Exception 53: { 54: /** 55: * Compatible with JDK 1.0+. 56: */ 57: private static final long serialVersionUID = 9176873029745254542L; 58: 59: /** 60: * The cause of this exception (duplicates the one stored in Throwable). 61: * 62: * @serial the exception cause 63: * @since 1.2 64: */ 65: private final Throwable ex; 66: 67: /** 68: * Create an exception without a message. Note that this initializes the 69: * cause to null. 70: */ 71: public ClassNotFoundException() 72: { 73: this(null, null); 74: } 75: 76: /** 77: * Create an exception with a message. Note that this initializes the 78: * cause to null. 79: * 80: * @param s the message 81: */ 82: public ClassNotFoundException(String s) 83: { 84: this(s, null); 85: } 86: 87: /** 88: * Create an exception with a message and chain it to the exception 89: * which occurred while loading the class. 90: * 91: * @param s the message 92: * @param ex the chained exception 93: * @since 1.2 94: */ 95: public ClassNotFoundException(String s, Throwable ex) 96: { 97: super(s, ex); 98: this.ex = ex; 99: } 100: 101: /** 102: * Returns the exception which occurred while loading the class, 103: * otherwise returns null. This is a legacy method; the preferred choice 104: * now is {@link Throwable#getCause()}. 105: * 106: * @return the cause of this exception 107: * @since 1.2 108: */ 109: public Throwable getException() 110: { 111: return ex; 112: } 113: 114: /** 115: * Returns the exception which occurred while loading the class, 116: * otherwise returns null. 117: * 118: * @return the cause of this exception 119: * @since 1.4 120: */ 121: public Throwable getCause() 122: { 123: return ex; 124: } 125: }
GNU Classpath (0.20) |