import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
  public static void main(String[] args) {
    // The text we want to write to the file
    String text = "Hello World!";

    // "try-with-resources": the stream will be closed automatically
    try (FileOutputStream output = new FileOutputStream("filename.txt")) {

      // Write the string as a sequence of bytes to the file
      output.write(text.getBytes());  

      // Confirm that the write operation succeeded
      System.out.println("Successfully wrote to file.");

    } catch (IOException e) {
      // If something goes wrong (e.g. file not accessible), show an error message
      System.out.println("Error writing file.");
      e.printStackTrace();  // Print details for debugging
    }
  }
}