File Input Output Stream

import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author SHASHI
 */
public class FileOutputStream1 {
    public static void main(String[] args) throws IOException {
        try {
            FileOutputStream file = new FileOutputStream("F:\\check.txt"); // will create file with specified name and in given location
 
            file.write(35); //be specific while writting the byte values .. it has different id  for diferent symbols
            file.close(); // a good practise
        } catch (FileNotFoundException ex) {
            Logger.getLogger(FileOutputStream1.class.getName()).log(Level.SEVERE, null, ex);
        }

FileInputStream f = new FileInputStream("F:check.txt"); // will check for this file
 int i =f.read();  // for reading u have to specify the content i.e, u r going to read integer content
        System.out.println(" the content is " +i);
     
    }
   
   
}

OUTPUT

the content is  17// whatever written in the file