Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FilterOutputStream; import java.io.OutputStream; public class Main { public static void main(String[] args) throws Exception { OutputStream os = new FileOutputStream("C://test.txt"); FilterOutputStream fos = new FilterOutputStream(os); // writes buffer to the output stream fos.write(65); // forces byte contents to written out to the stream fos.flush(); // create input streams FileInputStream fis = new FileInputStream("C://test.txt"); // get byte from the file int i = fis.read(); // convert integer to character char c = (char) i; System.out.print("Character read: " + c); fos.close(); fis.close(); } }