01: /*
02: * Copyright 1994-1997 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package java.lang;
27:
28: /**
29: * Thrown when an application attempts to use <code>null</code> in a
30: * case where an object is required. These include:
31: * <ul>
32: * <li>Calling the instance method of a <code>null</code> object.
33: * <li>Accessing or modifying the field of a <code>null</code> object.
34: * <li>Taking the length of <code>null</code> as if it were an array.
35: * <li>Accessing or modifying the slots of <code>null</code> as if it
36: * were an array.
37: * <li>Throwing <code>null</code> as if it were a <code>Throwable</code>
38: * value.
39: * </ul>
40: * <p>
41: * Applications should throw instances of this class to indicate
42: * other illegal uses of the <code>null</code> object.
43: *
44: * @author unascribed
45: * @version 1.26, 05/05/07
46: * @since JDK1.0
47: */
48: public class NullPointerException extends RuntimeException {
49: /**
50: * Constructs a <code>NullPointerException</code> with no detail message.
51: */
52: public NullPointerException() {
53: super ();
54: }
55:
56: /**
57: * Constructs a <code>NullPointerException</code> with the specified
58: * detail message.
59: *
60: * @param s the detail message.
61: */
62: public NullPointerException(String s) {
63: super(s);
64: }
65: }
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