Android APIs
public class

NullPointerException

extends RuntimeException
java.lang.Object
   ↳ java.lang.Throwable
     ↳ java.lang.Exception
       ↳ java.lang.RuntimeException
         ↳ java.lang.NullPointerException

Class Overview

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.

Summary

Public Constructors
NullPointerException()
Constructs a new NullPointerException that includes the current stack trace.
NullPointerException(String detailMessage)
Constructs a new NullPointerException with the current stack trace and the specified detail message.
[Expand]
Inherited Methods
From class java.lang.Throwable
From class java.lang.Object

Public Constructors

public NullPointerException ()

Added in API level 1

Constructs a new NullPointerException that includes the current stack trace.

public NullPointerException (String detailMessage)

Added in API level 1

Constructs a new NullPointerException with the current stack trace and the specified detail message.

Parameters
detailMessage String: the detail message for this exception.