Added in API level 1

NullPointerException

open class NullPointerException : RuntimeException
kotlin.Any
   ↳ kotlin.Throwable
   ↳ java.lang.Exception
   ↳ java.lang.RuntimeException
   ↳ java.lang.NullPointerException

Thrown when an application attempts to use null in a case where an object is required. These include:

  • Calling the instance method of a null object.
  • Accessing or modifying the field of a null object.
  • Taking the length of null as if it were an array.
  • Accessing or modifying the slots of null as if it were an array.
  • Throwing null as if it were a Throwable value.

Applications should throw instances of this class to indicate other illegal uses of the null object. NullPointerException objects may be constructed by the virtual machine as if stack trace was not writable.

Summary

Public constructors

Constructs a NullPointerException with no detail message.

Constructs a NullPointerException with the specified detail message.

Public constructors

NullPointerException

Added in API level 1
NullPointerException()

Constructs a NullPointerException with no detail message.

NullPointerException

Added in API level 1
NullPointerException(s: String!)

Constructs a NullPointerException with the specified detail message.

Parameters
s String!: the detail message.