Java tutorial
import java.io.BufferedOutputStream; import java.io.FileOutputStream; public class Main { public static void main(String[] args) throws Exception { BufferedOutputStream bufferedOutput = new BufferedOutputStream(new FileOutputStream("yourFile.txt")); bufferedOutput.write("Line one".getBytes()); bufferedOutput.write("\n".getBytes()); bufferedOutput.write(65); bufferedOutput.close(); } }