java.util · java.base · since Java 1.2

Entry

declaration

public interface Map.Entry<K, V>

A single key/value pair — the element type of Map.entrySet() and the return of NavigableMap navigation. Comparator factories order entries by key or value.

Key methods

`K getKey() / V getValue()`	The pair components.
`V setValue(V value)`	Write through to the backing map (entrySet entries only).
`static <K,V> Comparator<Map.Entry<K,V>> comparingByKey() / comparingByValue()`	Comparators for sorting entry streams.
`static <K,V> Map.Entry<K,V> Map.entry(K, V)`	Immutable standalone entry — factory declared on Map (not Map.Entry).