[ContentToByteArrayExample] read file content in to byte arr

import java.io.File;
import java.io.FileInputStream;

public class ContentToByteArrayExample {
    public static void main(String[] args) {

        File file = new File("D:/test.txt");

        readContentIntoByteArray(file);
    }

    private static byte[] readContentIntoByteArray(File file) {
        FileInputStream fileInputStream = null;
        byte[] bFile = new byte[(int) file.length()];
        try {
            // convert file into array of bytes
            fileInputStream = new FileInputStream(file);
            fileInputStream.read(bFile);
            fileInputStream.close();
            for (int i = 0; i < bFile.length; i++) {
                System.out.print(/* (char) */bFile[i]);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bFile;
    }
}