Java OutputStreamWriter.write(int c)

public void write(int c)  throws IOException

//from w w  w.java  2  s. c o  m

import java.io.*;

public class Main {

   public static void main(String[] args) {
      try {
         OutputStream os = new FileOutputStream("test.txt");
         OutputStreamWriter writer = new OutputStreamWriter(os);

         // create a new FileInputStream to read what we write
         FileInputStream in = new FileInputStream("test.txt");

         // write something in the file
         writer.write(70);
         writer.write(71);
         writer.write(72);

         // flush the stream
         writer.flush();

         // read what we write
         for (int i = 0; i < 3; i++) {
            System.out.print((char) in.read());
         }
         writer.close();
         in.close();

      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
}