Get Byte Array from File

In this section, we are going to show the array of bytes from the specified file. For this, a file 'Hello.txt' is passed into the constructor of class File.

In this section, we are going to show the array of bytes from the specified file. For this, a file 'Hello.txt' is passed into the constructor of class File.

fileInputStream.read(b)- This method reads the the file in bytes.

int b[i]- This will show the character in bytes.

char b[i]- This will show the character.

Here is the video tutorial of "How to read a file in byte array in Java?":

Here is the code of GetByteArrayFromfile.java


import java.io.*;



public class GetByteArrayFromfile {

  public static void main(String[] args) throws Exception

{

File file = new File("Hello.txt");



byte[] b = new byte[(int) file.length()];

try {

FileInputStream fileInputStream = new FileInputStream(file);

fileInputStream.read(b);

for (int i = 0; i < b.length; i++) {

System.out.println(

 "b[" + i + "] = " +((int)b[i] < 11  ? "  " : "") +

  b[i] + " , " +" character=(" + (char)b[i] + ")");

  }

} catch (FileNotFoundException e) {

System.out.println("File Not Found.");

e.printStackTrace();

}

}

}

Output will be displayed as:

Download Source Code

Get Byte Array from File

Get Byte Array from File

Get Byte Array from File

Tutorials