public static class AbstractMap.SimpleEntry<K,V> extends Object implements Map.Entry<K,V>, Serializable
Constructor and Description |
---|
AbstractMap.SimpleEntry(K theKey,
V theValue) |
AbstractMap.SimpleEntry(Map.Entry<? extends K,? extends V> copyFrom)
Constructs an instance with the key and value of
copyFrom . |
Modifier and Type | Method and Description |
---|---|
boolean |
equals(Object object)
Compares this instance with the specified object and indicates if they
are equal.
|
K |
getKey()
Returns the key.
|
V |
getValue()
Returns the value.
|
int |
hashCode()
Returns an integer hash code for this object.
|
V |
setValue(V object)
Sets the value of this entry to the specified value, replacing any
existing value.
|
String |
toString()
Returns a string containing a concise, human-readable description of this
object.
|
public V setValue(V object)
Map.Entry
public boolean equals(Object object)
Object
o
must represent the same object
as this instance using a class-specific comparison. The general contract
is that this comparison should be reflexive, symmetric, and transitive.
Also, no object reference other than null is equal to null.
The default implementation returns true
only if this ==
o
. See Writing a correct
equals
method
if you intend implementing your own equals
method.
The general contract for the equals
and Object.hashCode()
methods is that if equals
returns true
for
any two objects, then hashCode()
must return the same value for
these objects. This means that subclasses of Object
usually
override either both methods or neither of them.
public int hashCode()
Object
Object.equals(java.lang.Object)
returns true
must return
the same hash code value. This means that subclasses of Object
usually override both methods or neither method.
Note that hash values must not change over time unless information used in equals comparisons also changes.
See Writing a correct
hashCode
method
if you intend implementing your own hashCode
method.
public String toString()
Object
getClass().getName() + '@' + Integer.toHexString(hashCode())
See Writing a useful
toString
method
if you intend implementing your own toString
method.