com.isti.util

Class FifoHashtable.MapEntry

java.lang.Object

com.isti.util.FifoHashtable.MapEntry

All Implemented Interfaces:

java.util.Map.Entry

Enclosing class:

FifoHashtable

public static class FifoHashtable.MapEntry
extends java.lang.Object
implements java.util.Map.Entry

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.Object	key
protected java.lang.Object	value

Constructor Summary

Constructors

Constructor and Description
MapEntry(java.lang.Object key, java.lang.Object value)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Compares the specified object with this entry for equality.
java.lang.Object	getKey() Returns the key corresponding to this entry.
java.lang.Object	getValue() Returns the value corresponding to this entry.
int	hashCode() Returns the hash code value for this map entry.
java.lang.Object	setValue(java.lang.Object value) This method is not supported.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map.Entry

comparingByKey, comparingByKey, comparingByValue, comparingByValue

Field Detail

key

protected final java.lang.Object key

value

protected final java.lang.Object value

Constructor Detail

MapEntry

public MapEntry(java.lang.Object key,
                java.lang.Object value)

Method Detail

getKey

public java.lang.Object getKey()

Returns the key corresponding to this entry.

Specified by:

getKey in interface java.util.Map.Entry

Returns:

the key corresponding to this entry.

getValue

public java.lang.Object getValue()

Returns the value corresponding to this entry. If the mapping has been removed from the backing map (by the iterator's remove operation), the results of this call are undefined.

Specified by:

getValue in interface java.util.Map.Entry

Returns:

the value corresponding to this entry.

setValue

public java.lang.Object setValue(java.lang.Object value)

This method is not supported.

Specified by:

setValue in interface java.util.Map.Entry

Parameters:

value - value object.

Returns:

Nothing.

Throws:

java.lang.UnsupportedOperationException - Always throws this exception.

equals

public boolean equals(java.lang.Object o)

Compares the specified object with this entry for equality. Returns true if the given object is also a map entry and the two entries represent the same mapping. More formally, two entries e1 and e2 represent 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 the equals method works properly across different implementations of the Map.Entry interface.

Specified by:

equals in interface java.util.Map.Entry

Overrides:

equals in class java.lang.Object

Parameters:

o - object to be compared for equality with this map entry.

Returns:

true if the specified object is equal to this map entry.

hashCode

public int hashCode()

Returns the hash code value for this map entry. The hash code of a map entry e is defined to be:

     (e.getKey()==null   ? 0 : e.getKey().hashCode()) ^
     (e.getValue()==null ? 0 : e.getValue().hashCode())
 

This ensures that e1.equals(e2) implies that e1.hashCode()==e2.hashCode() for any two Entries e1 and e2, as required by the general contract of Object.hashCode.

Specified by:

hashCode in interface java.util.Map.Entry

Overrides:

hashCode in class java.lang.Object

Returns:

the hash code value for this map entry.

See Also:

Object.hashCode(), Object.equals(Object), equals(Object)