Read byte from file using DataInputStream : DataInputStream « File « Java Tutorial

1. Java Tutorial
2. File
3. DataInputStream

import java.io.DataInputStream;
import java.io.FileInputStream;

public class Main {

  public static void main(String[] args) throws Exception {
    FileInputStream fin = new FileInputStream("C:/Byte.txt");
    DataInputStream din = new DataInputStream(fin);
    byte b = din.readByte();
    System.out.println("byte : " + b);
    din.close();
  }
}