1 /*
   2  * Copyright (c) 1994, 2008, 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</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  * @since   JDK1.0
  46  */
  47 public
  48 class NullPointerException extends RuntimeException {
  49     private static final long serialVersionUID = 5162710183389028792L;
  50 
  51     /**
  52      * Constructs a <code>NullPointerException</code> with no detail message.
  53      */
  54     public NullPointerException() {
  55         super();
  56     }
  57 
  58     /**
  59      * Constructs a <code>NullPointerException</code> with the specified
  60      * detail message.
  61      *
  62      * @param   s   the detail message.
  63      */
  64     public NullPointerException(String s) {
  65         super(s);
  66     }
  67 }

   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#(String, Throwable,
  46  * boolean) suppression were disabled}.
  47  *
  48  * @author  unascribed
  49  * @since   JDK1.0
  50  */
  51 public
  52 class NullPointerException extends RuntimeException {
  53     private static final long serialVersionUID = 5162710183389028792L;
  54 
  55     /**
  56      * Constructs a {@code NullPointerException} with no detail message.
  57      */
  58     public NullPointerException() {
  59         super();
  60     }
  61 
  62     /**
  63      * Constructs a {@code NullPointerException} with the specified
  64      * detail message.
  65      *
  66      * @param   s   the detail message.
  67      */
  68     public NullPointerException(String s) {
  69         super(s);
  70     }
  71 }