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Class java.lang.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.


Constructor Index

 o NullPointerException()
Constructs a NullPointerException with no detail message.
 o NullPointerException(String)
Constructs a NullPointerException with the specified detail message.

Constructors

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

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

Parameters:
s - the detail message.

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