com.google.zxing
Interfaces 
Reader
ResultPointCallback
Writer
Classes 
Binarizer
BinaryBitmap
HtmlAssetTranslator
LuminanceSource
MultiFormatReader
MultiFormatWriter
Result
ResultPoint
StringsResourceTranslator
Enums 
BarcodeFormat
DecodeHintType
EncodeHintType
ResultMetadataType
Exceptions 
ChecksumException
FormatException
NotFoundException
ReaderException
WriterException