Class DefaultKeyValue<K,V>
java.lang.Object
org.apache.commons.collections4.keyvalue.AbstractKeyValue<K,V>
org.apache.commons.collections4.keyvalue.DefaultKeyValue<K,V>
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Constructor Summary
ConstructorsConstructorDescriptionConstructs a new pair with a null key and null value.DefaultKeyValue(Map.Entry<? extends K, ? extends V> entry) Constructs a new pair from the specifiedMap.Entry.DefaultKeyValue(K key, V value) Constructs a new pair with the specified key and given value.DefaultKeyValue(KeyValue<? extends K, ? extends V> pair) Constructs a new pair from the specifiedKeyValue. -
Method Summary
Modifier and TypeMethodDescriptionbooleanCompares thisMap.Entrywith anotherMap.Entry.inthashCode()Gets a hashCode compatible with the equals method.Sets the key.Sets the value.Returns a newMap.Entryobject with key and value from this pair.Methods inherited from class org.apache.commons.collections4.keyvalue.AbstractKeyValue
getKey, getValue, toString
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Constructor Details
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DefaultKeyValue
public DefaultKeyValue()Constructs a new pair with a null key and null value. -
DefaultKeyValue
Constructs a new pair with the specified key and given value.- Parameters:
key- the key for the entry, may be nullvalue- the value for the entry, may be null
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DefaultKeyValue
Constructs a new pair from the specifiedKeyValue.- Parameters:
pair- the pair to copy, must not be null- Throws:
NullPointerException- if the entry is null
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DefaultKeyValue
Constructs a new pair from the specifiedMap.Entry.- Parameters:
entry- the entry to copy, must not be null- Throws:
NullPointerException- if the entry is null
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Method Details
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equals
Compares thisMap.Entrywith anotherMap.Entry.Returns true if the compared object is also a
DefaultKeyValue, and its key and value are equal to this object's key and value. -
hashCode
Gets a hashCode compatible with the equals method.Implemented per API documentation of
Map.Entry.hashCode(), however subclasses may override this. -
setKey
Sets the key.- Overrides:
setKeyin classAbstractKeyValue<K,V> - Parameters:
key- the new key- Returns:
- the old key
- Throws:
IllegalArgumentException- if key is this object
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setValue
Sets the value.- Overrides:
setValuein classAbstractKeyValue<K,V> - Parameters:
value- the new value- Returns:
- the old value of the value
- Throws:
IllegalArgumentException- if value is this object
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toMapEntry
Returns a newMap.Entryobject with key and value from this pair.- Returns:
- a MapEntry instance
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