import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Date;
public class BufferDiff {
public static void main(String args[]) throws IOException {
FileOutputStream unbufStream;
BufferedOutputStream bufStream;
unbufStream = new FileOutputStream("test.one");
bufStream = new BufferedOutputStream(new FileOutputStream("test.two"));
System.out.println("Write file unbuffered: " + time(unbufStream) + "ms");
System.out.println("Write file buffered: " + time(bufStream) + "ms");
}
static int time(OutputStream os) throws IOException {
Date then = new Date();
for (int i = 0; i < 500000; i++) {
os.write(1);
}
os.close();
return (int) ((new Date()).getTime() - then.getTime());
}
}