weka.core
Interfaces 
Copyable
OptionHandler
WeightedInstancesHandler
Classes 
Attribute
AttributeStats
ContingencyTables
FastVector
Instance
Instances
Option
Queue
Range
SerializedObject
SparseInstance
SpecialFunctions
Statistics
Utils
Exceptions 
UnassignedClassException
UnassignedDatasetException
UnsupportedClassTypeException
WekaException