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Java Source | 1998-03-20 | 1.6 KB | 56 lines |
- /*
- * @(#)NullPointerException.java 1.13 98/03/18
- *
- * Copyright 1994-1997 by Sun Microsystems, Inc.,
- * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
- * All rights reserved.
- *
- * This software is the confidential and proprietary information
- * of Sun Microsystems, Inc. ("Confidential Information"). You
- * shall not disclose such Confidential Information and shall use
- * it only in accordance with the terms of the license agreement
- * you entered into with Sun.
- */
-
- package java.lang;
-
- /**
- * Thrown when an application attempts to use <code>null</code> in a
- * case where an object is required. These include:
- * <ul>
- * <li>Calling the instance method of a <code>null</code> object.
- * <li>Accessing or modifying the field of a <code>null</code> object.
- * <li>Taking the length of <code>null</code> as if it were an array.
- * <li>Accessing or modifying the slots of <code>null</code> as if it
- * were an array.
- * <li>Throwing <code>null</code> as if it were a <code>Throwable</code>
- * value.
- * </ul>
- * <p>
- * Applications should throw instances of this class to indicate
- * other illegal uses of the <code>null</code> object.
- *
- * @author unascribed
- * @version 1.13, 03/18/98
- * @since JDK1.0
- */
- public
- class NullPointerException extends RuntimeException {
- /**
- * Constructs a <code>NullPointerException</code> with no detail message.
- */
- public NullPointerException() {
- super();
- }
-
- /**
- * Constructs a <code>NullPointerException</code> with the specified
- * detail message.
- *
- * @param s the detail message.
- */
- public NullPointerException(String s) {
- super(s);
- }
- }
-