IdentityHashMap.IdentityEntry

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java.util
Class IdentityHashMap.IdentityEntry

java.lang.Object
  java.util.IdentityHashMap.IdentityEntry

All Implemented Interfaces:: Map.Entry

Enclosing class:: IdentityHashMap

private final class IdentityHashMap.IdentityEntry
extends java.lang.Object
implements Map.Entry

This class provides Map.Entry objects for IdentityHashMaps. The entry is fail-fast, and will throw a ConcurrentModificationException if the underlying map is modified, or if remove is called on the iterator that generated this object. It is identity based, so it violates the general contract of Map.Entry, and is probably unsuitable for comparison to normal maps; but it works among other IdentityHashMaps.

Field Summary

(package private) int knownMod
          The number of modifications to the backing Map that we know about.

(package private) int loc
          The location of this entry.

Constructor Summary

(package private) IdentityHashMap.IdentityEntry(int loc)
          Constructs the Entry.

Method Summary

boolean equals(java.lang.Object o)
          Compares the specified object with this entry, using identity semantics.

java.lang.Object getKey()
          Returns the key of this entry.

java.lang.Object getValue()
          Returns the value of this entry.

int hashCode()
          Returns the hashcode of the entry, using identity semantics.

java.lang.Object setValue(java.lang.Object value)
          Replaces the value of this mapping, and returns the old value.

java.lang.String toString()
          This provides a string representation of the entry.

Methods inherited from class java.lang.Object

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

Field Detail

loc

final int loc

The location of this entry.

knownMod

final int knownMod

The number of modifications to the backing Map that we know about.

Constructor Detail