Please note that this documentation is not final and is subject to change.

Java™ Platform
Standard Ed. 7

DRAFT internal-b21

java.lang
Class NullPointerException

java.lang.Object
  extended by java.lang.Throwable
      extended by java.lang.Exception
          extended by java.lang.RuntimeException
              extended by java.lang.NullPointerException
All Implemented Interfaces:
Serializable

public class NullPointerException
extends RuntimeException

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

Applications should throw instances of this class to indicate other illegal uses of the null object.

Since:
JDK1.0
See Also:
Serialized Form

Constructor Summary
NullPointerException()
          Constructs a NullPointerException with no detail message.
NullPointerException(String s)
          Constructs a NullPointerException with the specified detail message.
 
Method Summary
 
Methods inherited from class java.lang.Throwable
fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

NullPointerException

public NullPointerException()
Constructs a NullPointerException with no detail message.


NullPointerException

public NullPointerException(String s)
Constructs a NullPointerException with the specified detail message.

Parameters:
s - the detail message.

Java™ Platform
Standard Ed. 7

DRAFT internal-b21

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Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to the terms of the GNU General Public License.