import java.io.*;
import java.util.*;

public class StreamExample {
	public static void main(String[] args) throws IOException {
		FileInputStream in = new FileInputStream("file.dat");
		ArrayList<Integer> arrayList = new ArrayList<Integer>();
		for (;;) {
			int x = in.read();
			if (x == -1) {
				break;
			}
			arrayList.add(x);
		}
		System.out.println(arrayList);
		byte[] bytes = new byte[arrayList.size()];
		for (int i = 0; i < bytes.length; i++) {
			bytes[i] = (byte) (int) arrayList.get(i);
		}
		System.out.println(Arrays.toString(bytes));
		in.close();
		FileOutputStream out = new FileOutputStream("file2.dat");
		out.write(bytes);
		out.close();
	}
}