Android
java.lang
public class

java.lang.NullPointerException

java.lang.Object
java.lang.Throwable Serializable
java.lang.Exception
java.lang.RuntimeException
java.lang.NullPointerException

This runtime exception is thrown when an attempt is made to access a field or method of an instance or an element of an array when there is no instance or array to use (i.e. the pointer is null).

Summary

Public Constructors

            NullPointerException()
Constructs a new instance of this class with its walkback filled in.
            NullPointerException(String detailMessage)
Constructs a new instance of this class with its walkback and message filled in.
Methods inherited from class java.lang.Throwable
Methods inherited from class java.lang.Object

Details

Public Constructors

public NullPointerException()

Constructs a new instance of this class with its walkback filled in.

public NullPointerException(String detailMessage)

Constructs a new instance of this class with its walkback and message filled in.

Parameters

detailMessage String The detail message for the exception.
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