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package java.lang;

Thrown when an application attempts to use null in a
case where an object is required. These include:

Calling the instance method of a null object.
Accessing or modifying the field of a null object.
Taking the length of null as if it were an array.
Accessing or modifying the slots of null as if it
    were an array.
Throwing null as if it were a Throwable
    value.


Applications should throw instances of this class to indicate
other illegal uses of the null object.
Author:
 unascribed
Since:
  JDK1.0/**
 * 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
 * @since   JDK1.0
 */
public
class NullPointerException extends RuntimeException {
    
Constructs a NullPointerException with no detail message.
/**
     * Constructs a <code>NullPointerException</code> with no detail message.
     */
    public NullPointerException() {
        super();
    }

    
Constructs a NullPointerException with the specified
detail message.
Params:
s –   the detail message./**
     * Constructs a <code>NullPointerException</code> with the specified
     * detail message.
     *
     * @param   s   the detail message.
     */
    public NullPointerException(String s) {
        super(s);
    }
}