| AbstractAttributeMap<V> | Helper Map implementation for use with different Attribute Maps. | 
| AbstractThreadSafeAttributeMap<V> | Helper Map implementation for use with different Attribute Maps. | 
| ArrayIterator |  | 
| ArrayUtils | Utility class for managing arrays | 
| ClassUtils |  | 
| ConcurrentLRUCache<K,V> | A LRU cache implementation based upon ConcurrentHashMap and other techniques to reduce
 contention and synchronization overhead to utilize multiple CPU cores more effectively. | 
| ConcurrentLRUCache.Stats |  | 
| DynamicPushbackInputStream | NOTE: Copy of org.apache.abdera.i18n.text.io.DynamicPushbackInputStream
 
 PushbackInputStream implementation that performs dynamic resizing of the unread buffer | 
| EnumerationIterator<T> |  | 
| FastByteArrayInputStream | ByteArrayInputStream implementation that does not synchronize methods. | 
| FastByteArrayOutputStream | ByteArrayOutputStream implementation that doesn't synchronize methods
 and doesn't copy the data on toByteArray(). | 
| FastWriter | StringWriter cannot be reused without create a new object over and over. | 
| FilenameUtils | General filename and filepath manipulation utilities. | 
| HashMapUtils |  | 
| Hex |  | 
| Lazy<T> | Inspired by commons-lang LazyInitializer. | 
| LRULinkedHashMap<K,V> |  | 
| PriorityQueue<T> | A PriorityQueue maintains a partial ordering of its elements such that the
 least element can always be found in constant time. | 
| SkipMatchIterator<T> |  | 
| StreamCharBuffer | 
 StreamCharBuffer is a multipurpose in-memory buffer that can replace JDK
 in-memory buffers (StringBuffer, StringBuilder, StringWriter). | 
| StringCharArrayAccessor | Provides optimized access to java.lang.String internals
 - Optimized way of creating java.lang.String by reusing a char[] buffer -
 Optimized way of writing String to java.io.Writer
 java.lang.String creation reusing a char[] buffer requires Java 1.5+
 System property "oam.stringchararrayaccessor.enabled" enables this hack. | 
| StringUtils | Implements utility functions for the String class | 
| SubKeyMap<V> | Map that wraps another to provide an isolated namespace using
 a prefix. | 
| ThreadsafeXorShiftRandom |  | 
| XorShiftRandom | A simple XORShift Random generator. |