Output streams

The code below writes ints one by one using void write(int b) method, but the printed message doesn't contain any digits! This happens because written numbers are converted to their char representation according to some rule.

int[] message = new int[] {114, 101, 97, 100, 32, 97, 98, 111, 117, 116, 32, 65, 83, 67, 73, 73};

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
for (int code : message) {
    outputStream.write(code);
}

System.out.println(outputStream.toString());

Run the code above and check an output message. It is the answer of the task. Follow an instruction hidden in the message to get more details about the coding rule applied here.

Note that we have not closed ByteArrayOutputStream. The stream doesn't use any resources except byte array in RAM, so its close method does nothing and the stream doesn't need closing. Almost all other types of streams require closing their instances after work completion.