Read from a file and write back

Question

Hi,
I'm trying to read from a text file, and stor into a vector of vectors.
This part works fine
then i want to randomly split the vector into 2 different vectors a training set and a test set.
this part woks fine too.
now i want to write each of these vectors to a text file........this is the part i'm stuck on.
some of my code is below:
public static void main(String[] args)
          Vector Train;
          //Vector Test;
          Split s = new Split();
          Vector data = s.readFile("diabetes.txt");
          Vector Test = s.split(data);
          Train = s.getTrainingVector();
          //Training.txt = s.writeToFile(Training, "Training.txt");
          //Test.txt = s.writeToFile(data, "Test.txt");
          File Training = new File("Training.txt");
          File Testing = new File("Test.txt");
          FileWriter out = new FileWriter(Training);
          for(int i =0; i<Train.size(); i++)
               out.write(Train.get(i));
               out.write("\n");
          out.close();
          FileWriter out2 = new FileWriter(Test);
          for(int i =0; i<Test.size(); i++)
               out2.write(Test.get(i));
               out2.write("\n");
          out2.close();
     }Can anybody help?
Cheers

Answer 1

i've tried that but i'm getting this error:
cannot resolve symbol
symbol : method write (java.lang.Float)
location: class java.io.FileWriter
out.write((Float)(InnerVec.get(i)));
does it have to be Strings?