File Adder and Remover

FileTest.java

package test;

import java.io.*;
import java.util.ArrayList;
import java.util.Iterator;

public class FileTest {
    public static ArrayList<String> original = new ArrayList<String>();
    public static void main(String[] args) throws IOException {
        File file = new File("./original.txt");
        if (!file.exists()) {
            file.createNewFile();
        }
        load(file);
        add("example");
        save(file);
    }

    public static void add(String line) {
        original.add(line);
    }

    public static void remove(String line) {
        original.remove(line);
    }

    public static void save(File file) throws IOException {
        BufferedWriter writer = new BufferedWriter(new FileWriter(file));
        Iterator iterator = original.iterator();
        while (iterator.hasNext()) {
            String line = (String) iterator.next();
            writer.write(line);
            if (iterator.hasNext()) {
                writer.newLine();
            }
        }
        writer.flush();
        writer.close();
    }

    public static void load(File file) throws IOException {
        BufferedReader reader = new BufferedReader(new FileReader(file));
        String line;
        original.clear();
        while ((line = reader.readLine()) != null) {
            original.add(line);
        }
        reader.close();
    }
}