Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package myclassifier; import java.io.File; import weka.core.Instances; /** * * @author toshiba */ public class Main { public static void main(String[] args) throws Exception { System.out.println("C"); File f = new File("weather.nominal.arrf"); if (f.exists() && !f.isDirectory()) { System.out.println("A"); } else { System.out.println("B"); } System.out.println("C"); WekaAccessor access = new WekaAccessor(); Instances train_data = access.loadArff("weather.nominal.arrf"); train_data.toString(); train_data.firstInstance().toString(); MyId3 id3 = new MyId3(); id3.buildClassifier(train_data); access.tenFoldCrossValidation(id3, train_data); } }