Java in a Nutshell, 5th Edition

Name

Map.Entry<K,V>

Synopsis

This interface represents a single mapping, or association, between a key object and a value object in a Map. Like Map itself, Map.Entry has been made generic in Java 5.0 and defines the same type variables that Map does.

The entrySet( ) method of a Map returns a Set of Map.Entry objects that represent the set of mappings in the map. Use the iterator( ) method of that Set to enumerate these Map.Entry objects. Use getKey( ) and getValue( ) to obtain the key and value objects for the entry. Use the optionally supported setValue( ) method to change the value of an entry. This method throws a java.lang.UnsupportedOperationException if it is not supported by the implementation.

public interface Map.Entry<K,V> {
// Public Instance Methods
     boolean equals(Object o);  
     K getKey( );  
     V getValue( );  
     int hashCode( );  
     V setValue(V value);  
}

Passed To

LinkedHashMap.removeEldestEntry( )