public class DefaultKeyValue extends AbstractKeyValue
KeyValue
pair that does not implement
Map.Entry
.
Note that a DefaultKeyValue
instance may not contain
itself as a key or value.
Constructor and Description |
---|
DefaultKeyValue()
Constructs a new pair with a null key and null value.
|
DefaultKeyValue(KeyValue pair)
Constructs a new pair from the specified
KeyValue . |
DefaultKeyValue(java.util.Map.Entry entry)
Constructs a new pair from the specified
Map.Entry . |
DefaultKeyValue(java.lang.Object key,
java.lang.Object value)
Constructs a new pair with the specified key and given value.
|
Modifier and Type | Method and Description |
---|---|
boolean |
equals(java.lang.Object obj)
Compares this
Map.Entry with another Map.Entry . |
int |
hashCode()
Gets a hashCode compatible with the equals method.
|
java.lang.Object |
setKey(java.lang.Object key)
Sets the key.
|
java.lang.Object |
setValue(java.lang.Object value)
Sets the value.
|
java.util.Map.Entry |
toMapEntry()
Returns a new
Map.Entry object with key and value from this pair. |
getKey, getValue, toString
public DefaultKeyValue()
public DefaultKeyValue(java.lang.Object key, java.lang.Object value)
key
- the key for the entry, may be nullvalue
- the value for the entry, may be nullpublic DefaultKeyValue(KeyValue pair)
KeyValue
.pair
- the pair to copy, must not be nulljava.lang.NullPointerException
- if the entry is nullpublic DefaultKeyValue(java.util.Map.Entry entry)
Map.Entry
.entry
- the entry to copy, must not be nulljava.lang.NullPointerException
- if the entry is nullpublic java.lang.Object setKey(java.lang.Object key)
key
- the new keyjava.lang.IllegalArgumentException
- if key is this objectpublic java.lang.Object setValue(java.lang.Object value)
value
- the new valuejava.lang.IllegalArgumentException
- if value is this objectpublic java.util.Map.Entry toMapEntry()
Map.Entry
object with key and value from this pair.public boolean equals(java.lang.Object obj)
Map.Entry
with another Map.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.
equals
in class java.lang.Object
obj
- the object to compare topublic int hashCode()
Implemented per API documentation of Map.Entry.hashCode()
,
however subclasses may override this.
hashCode
in class java.lang.Object
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