de.kosi.gui.util
Class Cache

java.lang.Object
  |
  +--de.kosi.gui.util.Cache

public class Cache

extends java.lang.Object

An object that holds a maximum of size key value entries. A full cache removes the least recently used entry if a new one enters it. An object gets used when it gets accessed by the get(Object) method. We use this class to cache filtered images.

Field Summary

protected java.util.Vector	fifo
protected java.util.Hashtable	hashtable
protected int	size The maximum number of objects that can be stored in this cache.

Constructor Summary

Cache(int size)
Creates a cache with size entries.

Method Summary

java.lang.Object	get(java.lang.Object key) Looks and returns an object from this cache.
void	put(java.lang.Object key, java.lang.Object obj) Puts an object into this cache.

Methods inherited from class java.lang.Object

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

Field Detail

hashtable

protected java.util.Hashtable hashtable

fifo

protected java.util.Vector fifo

size

protected int size

The maximum number of objects that can be stored in this cache.

Constructor Detail

Cache

public Cache(int size)

Creates a cache with size entries.

Parameters:

size - the maximum number of objects that can be stored in this cache.

Method Detail

get

public java.lang.Object get(java.lang.Object key)

Looks and returns an object from this cache.

put

public void put(java.lang.Object key,
                java.lang.Object obj)

Puts an object into this cache.