java File to byte

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;

public class FileByteTest {
    public static void main(String[] args) throws IOException {

        BufferedInputStream in = new BufferedInputStream(new FileInputStream(
                "C:/Test.java"));
        ByteArrayOutputStream out = new ByteArrayOutputStream(1024);

        System.out.println("Available bytes:" + in.available());

        byte[] temp = new byte[1024];
        int size = 0;
        while ((size = in.read(temp)) != -1) {
            out.write(temp, 0, size);
        }
        in.close();

        byte[] content = out.toByteArray();
        System.out.println("Readed bytes count:" + content.length);
    }
}