Display file contents in hexadecimal

   
 
import java.io.FileInputStream;

public class Main {
  public static void main(String[] args) throws Exception {
    FileInputStream fis = new FileInputStream("/home/username/data.txt");

    int i = 0;

    int count = 0;

    while ((i = fis.read()) != -1) {
      if (i != -1) {
        System.out.printf("%02X ", i);
        count++;
      }

      if (count == 16) {
        System.out.println("");
        count = 0;
      }
    }
    fis.close();
  }
}

Related examples in the same category

1.	Copy a file
2.	Read file using FileInputStream
3.	Skip n bytes while reading the file using FileInputStream
4.	Copying One File to Another
5.	Copying One File to Another with FileChannel
6.	Read bytes and display their hexadecimal values.
7.	Reading a File into a Byte Array: reads the entire contents of a file into a byte array
8.	Use Java NIO to Copy File
9.	Read one byte from a file
10.	Read file character by character
11.	Count characters with FileInputStream
12.	Read and copy with FileInputStream and FileOutputStream
13.	Copy a file with FileOutputStream and FileInputStream
14.	Read file in byte array using FileInputStream
15.	Resettable File InputStream

Display file contents in hexadecimal : FileInputStream « File Input Output « Java

Related examples in the same category