Clustering Weka java API -

Clustering Weka java API -

while implementing simple kmeans clustering via weka java api, how select attributes based on clustering performed. have tried next line of code:

filteredclusterer fc=new filteredclusterer(); string[] options=new string[2]; options[0]="-r"; options[1]="1"; remove remove=new remove(); remove.setoptions(options); remove.setinputformat(train); fc.setfilter(remove); fc.setclusterer(clusterer); fc.buildclusterer(train);`

but error generated , says arrayindexoutofbound

java