Appending to a File

import java.io.FileWriter;
import java.io.IOException;

public class AppendFileExample {
    public static void main(String[] args) {
        String filePath = "output.txt";
        String contentToAppend = "This line will be appended!";

        try (FileWriter fw = new FileWriter(filePath, true)) {
            fw.write(contentToAppend + "\n");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}