import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.commons.lang3.StringUtils;

public class Main {
    public static void main(String[] args) {
        ArrayList<String> data = new ArrayList<>();
        data.add("Java");
        data.add("Library");
        data.add("Example");

        try (FileWriter writer = new FileWriter("output.txt")) {
            for (String item : data) {
                writer.write(StringUtils.reverse(item) + "\n");
            }
            System.out.println("Data written to file.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}