java.lang
Class NullPointerException

java.lang.Object
  |
  +--java.lang.Throwable
        |
        +--java.lang.Exception
              |
              +--java.lang.RuntimeException
                    |
                    +--java.lang.NullPointerException

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

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
getMessage, printStackTrace, toString
 
Methods inherited from class java.lang.Object
equals, 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.



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