Added in API level 9

SimpleEntry

open class SimpleEntry<K : Any!, V : Any!> : MutableEntry<K, V>, Serializable

kotlin.Any
↳	java.util.AbstractMap.SimpleEntry

An Entry maintaining a key and a value. The value may be changed using the setValue method. Instances of this class are not associated with any map nor with any map's entry-set view.

Summary

Public constructors
`SimpleEntry(key: K, value: V)` Creates an entry representing a mapping from the specified key to the specified value.
`SimpleEntry(entry: MutableEntry<out K, out V>)` Creates an entry representing the same mapping as the specified entry.

Public methods
open Boolean	`equals(other: Any?)` Compares the specified object with this entry for equality.
open Int	`hashCode()` Returns the hash code value for this map entry.
open V	`setValue(newValue: V)` Replaces the value corresponding to this entry with the specified value.
open String	`toString()` Returns a String representation of this map entry.

Properties
open K	`key` Returns the key corresponding to this entry.
open V	`value` Returns the value corresponding to this entry.

Public constructors

SimpleEntry

Added in API level 9

SimpleEntry(
    key: K, 
    value: V)

Creates an entry representing a mapping from the specified key to the specified value.

Parameters
`key`	K: the key represented by this entry
`value`	V: the value represented by this entry

SimpleEntry

Added in API level 9

SimpleEntry(entry: MutableEntry<out K, out V>)

Creates an entry representing the same mapping as the specified entry.

Parameters
`entry`	MutableEntry<out K, out V>: the entry to copy

Public methods

equals

Added in API level 9

open fun equals(other: Any?): Boolean

Compares the specified object with this entry for equality. Returns true if the given object is also a map entry and the two entries represent the same mapping. More formally, two entries e1 and e2 represent the same mapping if

(e1.getKey()==null ?
     e2.getKey()==null :
     e1.getKey().equals(e2.getKey()))
    &&
    (e1.getValue()==null ?
     e2.getValue()==null :
     e1.getValue().equals(e2.getValue()))

This ensures that the equals method works properly across different implementations of the Map.Entry interface.

Parameters
`obj`	the reference object with which to compare.
`o`	object to be compared for equality with this map entry

Return
`Boolean`	`true` if the specified object is equal to this map entry

See Also

#hashCode

hashCode

Added in API level 9

open fun hashCode(): Int

Returns the hash code value for this map entry. The hash code of a map entry e is defined to be:

(e.getKey()==null   ? 0 : e.getKey().hashCode()) ^
    (e.getValue()==null ? 0 : e.getValue().hashCode())

This ensures that e1.equals(e2) implies that e1.hashCode()==e2.hashCode() for any two Entries e1 and e2, as required by the general contract of Object#hashCode.

Return
`Int`	the hash code value for this map entry

See Also

#equals

setValue

Added in API level 9

open fun setValue(newValue: V): V

Replaces the value corresponding to this entry with the specified value.

Parameters
`value`	new value to be stored in this entry

Return
`V`	the old value corresponding to the entry

Exceptions
`java.lang.UnsupportedOperationException`	if the `put` operation is not supported by the backing map
`java.lang.ClassCastException`	if the class of the specified value prevents it from being stored in the backing map
`java.lang.NullPointerException`	if the backing map does not permit null values, and the specified value is null
`java.lang.IllegalArgumentException`	if some property of this value prevents it from being stored in the backing map
`java.lang.IllegalStateException`	implementations may, but are not required to, throw this exception if the entry has been removed from the backing map.

toString

Added in API level 9

open fun toString(): String

Returns a String representation of this map entry. This implementation returns the string representation of this entry's key followed by the equals character ("=") followed by the string representation of this entry's value.

Return
`String`	a String representation of this map entry

Properties

key

Added in API level 9

open val key: K

Returns the key corresponding to this entry.

Return
`K`	the key corresponding to this entry

Exceptions
`java.lang.IllegalStateException`	implementations may, but are not required to, throw this exception if the entry has been removed from the backing map.

value

Added in API level 9

open val value: V

Returns the value corresponding to this entry.

Return
`V`	the value corresponding to this entry

Exceptions
`java.lang.IllegalStateException`	implementations may, but are not required to, throw this exception if the entry has been removed from the backing map.