FixedSizeMap

Class Overview

Decorates another Map to fix the size, preventing add/remove.

Any action that would change the size of the map is disallowed. The put method is allowed to change the value associated with an existing key however.

If trying to remove or clear the map, an UnsupportedOperationException is thrown. If trying to put a new mapping into the map, an IllegalArgumentException is thrown. This is because the put method can succeed if the mapping's key already exists in the map, so the put method is not always unsupported.

Note that FixedSizeMap is not synchronized and is not thread-safe. If you wish to use this map from multiple threads concurrently, you must use appropriate synchronization. The simplest approach is to wrap this map using synchronizedMap(Map). This class may throw exceptions when accessed by concurrent threads without synchronization.

This class is Serializable from Commons Collections 3.1.

Summary

[Expand] Inherited Fields
From class org.apache.commons.collections.map.AbstractMapDecorator protected Map map The map to decorate

[Expand] Inherited Methods
From class org.apache.commons.collections.map.AbstractMapDecorator void clear() boolean containsKey(Object key) boolean containsValue(Object value) Set entrySet() boolean equals(Object object) Object get(Object key) Map getMap() Gets the map being decorated. int hashCode() boolean isEmpty() Set keySet() Object put(Object key, Object value) void putAll(Map mapToCopy) Object remove(Object key) int size() String toString() Collection values()
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait() final void wait(long arg0, int arg1) final void wait(long arg0)
From interface java.util.Map abstract void clear() abstract boolean containsKey(Object arg0) abstract boolean containsValue(Object arg0) abstract Set<Entry<K, V>> entrySet() abstract boolean equals(Object arg0) abstract V get(Object arg0) abstract int hashCode() abstract boolean isEmpty() abstract Set<K> keySet() abstract V put(K arg0, V arg1) abstract void putAll(Map<? extends K, ? extends V> arg0) abstract V remove(Object arg0) abstract int size() abstract Collection<V> values()
From interface org.apache.commons.collections.BoundedMap abstract boolean isFull() Returns true if this map is full and no new elements can be added. abstract int maxSize() Gets the maximum size of the map (the bound).