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NullPointerException.java
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1998-09-22
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/*
* @(#)NullPointerException.java 1.12 98/07/01
*
* Copyright 1995-1998 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 1.12, 07/01/98
* @since JDK1.0
*/
public
class NullPointerException extends RuntimeException {
/**
* Constructs a <code>NullPointerException</code> with no detail message.
*
* @since JDK1.0
*/
public NullPointerException() {
super();
}
/**
* Constructs a <code>NullPointerException</code> with the specified
* detail message.
*
* @param s the detail message.
* @since JDK1.0
*/
public NullPointerException(String s) {
super(s);
}
}