import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

public class Bla {

    public static void main(String[] args) {
        List<File> fileList = new ArrayList<File>();
        addFiles(fileList, 10, ".txt");
        writeOutFileList(fileList);
    }

    static void addFiles(Collection<File> c, int index, String fileEnding) {
        for(int i = 0; i < index; i++) {
            c.add(new File(String.valueOf(i) + fileEnding));
        }
    }

    static void writeOutFileList(Collection<File> c) {
        try {
            BufferedWriter bw = null;
            for(Iterator<File> it = c.iterator(); it.hasNext();) {
                bw = new BufferedWriter(new FileWriter(it.next()));
                bw.write("");
                it.remove();
            }
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}