weka.core.converters
Interfaces 
BatchConverter
DatabaseConverter
FileSourcedConverter
IncrementalConverter
Loader
Saver
Classes 
AbstractFileSaver
AbstractLoader
AbstractSaver
ArffLoader
ArffSaver
C45Loader
C45Saver
ConverterUtils
CSVLoader
CSVSaver
DatabaseConnection
DatabaseLoader
DatabaseSaver
SerializedInstancesLoader
SerializedInstancesSaver