Question

How can i convert File to Binary? I just need it for my project. I need to encrypt a file by its binaries.

Answer 1

If you’re referring to accessing the ACTUAL BINARY form then read in the file and convert every byte to a binary representation…

EDIT:

Here’s some code to convert a byte into a string with the bits:

String getBits(byte b)
{
    String result = "";
    for(int i = 0; i < 8; i++)
        result += (b & (1 << i)) == 0 ? "0" : "1";
    return result;
}

If you’re referring to accessing the bytes in the file then simply use the following code (you can use this for the first case as well):

File file = new File("filename.bin");
byte[] fileData = new byte[file.length()];
FileInputStream in = new FileInputStream(file);
in.read(fileData):
in.close();
// now fileData contains the bytes of the file

To use these two pieces of code you can now loop over every byte and create a String object (8X larger than the original file size!!) with the bits:

String content = "";
for(byte b : fileData)
    content += getBits(b);
// content now contains your bits.