java copy binary between files

import java.io.*;

public class Test {
    public static void main(String[] args) throws Exception {
        BufferedInputStream inputStream = new BufferedInputStream(new FileInputStream("file.txt"));
        BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream("out.txt"));

        try {
            int ch;
            while ((ch = inputStream.read()) != -1) {
                outputStream.write(ch);
            }
            inputStream.close();
            outputStream.close();
        }
        catch (Exception e) {
            System.exit(1);
        }

    }
}