java.lang.Object
java.util.AbstractMap.SimpleEntry<K,V> 
- Type Parameters:
- K- the type of key
- V- the type of the value
- All Implemented Interfaces:
- Serializable,- Map.Entry<K,- V> 
- Enclosing class:
- AbstractMap<K,- V> 
public static class AbstractMap.SimpleEntry<K,V> 
extends Object
implements Map.Entry<K,V>, Serializable 
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.- API Note:
- This class facilitates the process of building custom map
 implementations. For example, it may be convenient to return
 arrays of SimpleEntryinstances in methodMap.entrySet().toArray.
- Since:
- 1.6
- See Also:
- 
Constructor SummaryConstructorsConstructorDescriptionSimpleEntry(Map.Entry<? extends K, ? extends V> entry) Creates an entry representing the same mapping as the specified entry.SimpleEntry(K key, V value) Creates an entry representing a mapping from the specified key to the specified value.
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Method SummaryModifier and TypeMethodDescriptionbooleanCompares the specified object with this entry for equality.getKey()Returns the key corresponding to this entry.getValue()Returns the value corresponding to this entry.inthashCode()Returns the hash code value for this map entry.Replaces the value corresponding to this entry with the specified value.toString()Returns a String representation of this map entry.
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Constructor Details- 
SimpleEntryCreates an entry representing a mapping from the specified key to the specified value.- Parameters:
- key- the key represented by this entry
- value- the value represented by this entry
 
- 
SimpleEntryCreates an entry representing the same mapping as the specified entry.- Parameters:
- entry- the entry to copy
 
 
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- 
Method Details- 
getKeyReturns the key corresponding to this entry.
- 
getValueReturns the value corresponding to this entry.
- 
setValueReplaces the value corresponding to this entry with the specified value.
- 
equalsCompares the specified object with this entry for equality. Returnstrueif the given object is also a map entry and the two entries represent the same mapping. More formally, two entriese1ande2represent 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 theequalsmethod works properly across different implementations of theMap.Entryinterface.
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hashCodepublic int hashCode()Returns the hash code value for this map entry. The hash code of a map entryeis defined to be:(e.getKey()==null ? 0 : e.getKey().hashCode()) ^ (e.getValue()==null ? 0 : e.getValue().hashCode()) This ensures thate1.equals(e2)implies thate1.hashCode()==e2.hashCode()for any two Entriese1ande2, as required by the general contract ofObject.hashCode().
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toStringReturns 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.
 
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