File list (Check if you may need any files):
gaknn
.....\core
.....\....\Attribute.java
.....\....\Copyable.java
.....\....\FastVector.java
.....\....\Instance.java
.....\....\Instances.java
.....\....\InvalidAttributeTypeException.java
.....\....\InvalidClassIndexException.java
.....\....\InvalidValueIndexException.java
.....\....\Pair.java
.....\dataaccess
.....\..........\ArffFileReader.java
.....\..........\DataFileReader.java
.....\..........\ParameterReader.java
.....\..........\ParameterWriter.java
.....\..........\test.java
.....\..........\XMLReader.java
.....\datapreprocess
.....\..............\BasicValueHandler.java
.....\..............\NormalizeData.java
.....\..............\ValueHandler.java
.....\EvaluatePredictions.java
.....\evaluator
.....\.........\Evaluator.java
.....\.........\SimpleWeightEvaluator.java
.....\Main.java
.....\OptimizeKNN.java
.....\predictor
.....\.........\Predictor.java
.....\.........\Predictor1.java
.....\.........\Predictor2.java
.....\similarity
.....\..........\AbstractSimilarity.java
.....\..........\BasicSimilarity.java
.....\..........\EuclideanSimilarity.java