Read one byte from a file : FileInputStream « File « Java Tutorial






  1. Java Tutorial
  2. File
  3. FileInputStream
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Main {
  public void readOneByte() throws FileNotFoundException {
    FileInputStream file = null;
    byte x = -1;
    try {
      file = new FileInputStream("fileName");
      x = (byte) file.read();
    } catch (FileNotFoundException f) {
      throw f;
    } catch (IOException i) {
      i.printStackTrace();
    } finally {
      try {
        if (file != null) {
          file.close();
        }
      } catch (IOException e) {
      }
    }
  }
}








11.8.FileInputStream
11.8.1.FileInputStream
11.8.2.Create FileInputStream and read, display data
11.8.3.Getting FileChannel from FileInputStream
11.8.4.Creating File Input Streams from file name
11.8.5.Creating FileInputStream from File object
11.8.6.Using a FileDescriptor from getFD() and creating a FileInputStream from FileDescriptor
11.8.7.Constructing FileInputStream to read from a Text File
11.8.8.Skip n bytes while reading the file using FileInputStream
11.8.9.Copy a file with read(byte[] data) and write(byte[] data)
11.8.10.Reading a Binary File
11.8.11.Reading Mixed Data from a File
11.8.12.Read one byte from a file
11.8.13.Read file character by character
11.8.14.Reading a File into a Byte Array: reads the entire contents of a file into a byte array
11.8.15.Read bytes and display their hexadecimal values.
11.8.16.Reading UTF-8 Encoded Data
11.8.17.Reading into a Large Buffer through FileChannel
11.8.18.Display file contents in hexadecimal