Impressora Bematech MP-4000

import java.io.*;

public class lpt {

	public static void main(String[] args) {

		if (args.length != 1) {
			System.out.println("usage: java lpt1 ");
		}

		try {

			FileOutputStream os = new FileOutputStream(args[0]);

			PrintStream ps = new PrintStream(os);

			ps.println("Hello world!");

			ps.print("\f");

			ps.close();
		} catch (Exception e) {
			System.out.println("Exception occurred: " + e);
		}
	}

}