java.lang.NullPointerException Class Reference

Inheritance diagram for java.lang.NullPointerException:

Public Member Functions
	NullPointerException ()
	NullPointerException (String detailMessage)
Public Member Functions inherited from java.lang.RuntimeException
	RuntimeException ()
	RuntimeException (String detailMessage)
Public Member Functions inherited from java.lang.Exception
	Exception ()
	Exception (String detailMessage)
Public Member Functions inherited from java.lang.Throwable
	Throwable ()
	Throwable (String detailMessage)
String	getMessage ()
String	getLocalizedMessage ()
void	printStackTrace ()
String	toString ()

Detailed Description

Thrown when a program tries to access a field or method of an object or an element of an array when there is no instance or array to use, that is if the object or array points to

null 

. It also occurs in some other, less obvious circumstances, like a

throw e 

statement where the Throwable reference is

null 

.

Constructor & Destructor Documentation

NullPointerException() [1/2]

java.lang.NullPointerException.NullPointerException ( )

inline

Constructs a new

NullPointerException 

that includes the current stack trace.

NullPointerException() [2/2]

java.lang.NullPointerException.NullPointerException ( String  detailMessage )

inline

Constructs a new

NullPointerException 

with the current stack trace and the specified detail message.

Parameters

detailMessage

the detail message for this exception.

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The documentation for this class was generated from the following file:

• src/java/lang/NullPointerException.java