org.apache.poi.util
Interfaces 
FixedField
LittleEndianConsts
Classes 
BinaryTree
BitField
ByteField
HexDump
HexRead
IntegerField
IntList
LittleEndian
LongField
POILogFactory
POILogger
ShortField
ShortList
StringUtil
Exceptions 
LittleEndian.BufferUnderrunException