Showing the changes to java/pkg/java/lang/NullPointerException.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1994, 2011, 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.lang; | |
| 27 | + | |
| 28 | +/** | |
| 29 | + * Thrown when an application attempts to use {@code null} in a | |
| 30 | + * case where an object is required. These include: | |
| 31 | + * <ul> | |
| 32 | + * <li>Calling the instance method of a {@code null} object. | |
| 33 | + * <li>Accessing or modifying the field of a {@code null} object. | |
| 34 | + * <li>Taking the length of {@code null} as if it were an array. | |
| 35 | + * <li>Accessing or modifying the slots of {@code null} as if it | |
| 36 | + * were an array. | |
| 37 | + * <li>Throwing {@code null} as if it were a {@code Throwable} | |
| 38 | + * value. | |
| 39 | + * </ul> | |
| 40 | + * <p> | |
| 41 | + * Applications should throw instances of this class to indicate | |
| 42 | + * other illegal uses of the {@code null} object. | |
| 43 | + * | |
| 44 | + * {@code NullPointerException} objects may be constructed by the | |
| 45 | + * virtual machine as if {@linkplain Throwable#Throwable(String, | |
| 46 | + * Throwable, boolean, boolean) suppression were disabled and/or the | |
| 47 | + * stack trace was not writable}. | |
| 48 | + * | |
| 49 | + * @author unascribed | |
| 50 | + * @since JDK1.0 | |
| 51 | + */ | |
| 52 | +public | |
| 53 | +class NullPointerException extends RuntimeException { | |
| 54 | + private static final long serialVersionUID = 5162710183389028792L; | |
| 55 | + | |
| 56 | + /** | |
| 57 | + * Constructs a {@code NullPointerException} with no detail message. | |
| 58 | + */ | |
| 59 | + public NullPointerException() { | |
| 60 | + super(); | |
| 61 | + } | |
| 62 | + | |
| 63 | + /** | |
| 64 | + * Constructs a {@code NullPointerException} with the specified | |
| 65 | + * detail message. | |
| 66 | + * | |
| 67 | + * @param s the detail message. | |
| 68 | + */ | |
| 69 | + public NullPointerException(String s) { | |
| 70 | + super(s); | |
| 71 | + } | |
| 72 | +} | |