having trouble converting from String to byte[]

Question

public static Runnable reader() throws IOException {
    Log.e("Communication", "reader");
    din = new DataInputStream(sock.getInputStream());
    brdr = new BufferedReader(new InputStreamReader(din), 300);
    boolean done = false;
    while (!done) {
        try {
            char[] buffer = new char[200];
            int anzahlZeichen = brdr.read(buffer, 0, 200);
            String nachricht = new String(buffer, 0, anzahlZeichen);
            byte[] in = nachricht.getBytes("ISO-8859-1");
            for (int counter = 0; counter < nachricht.length(); counter++) {
                System.out.println(in);
            }
            if (nachricht != null)
                answer();
            System.out.println(nachricht);

        } catch (IOException ioe) {
            done = true;
        }
    }

    return null;
}

i want to convert the String nachricht to the Byte[] in but i dont get it. Could anyone help pls? I am just receiving Numbers, no words or letters. Another method is welcome, too. All i get at System.out.println(nachricht)is seven times[B@41c04778 but i should get 01 02 03 04 05 06 07.

Answer 1

Your problem is lineSystem.out.println(in)

It should be System.out.println(in[counter]);

Answer 2

This

[B@41c04778

indicates you're printing an array ([) of bytes (B).

Java arrays don't have a useful toString() implementation. The above is useful to understand since you'll do the same in the future. Obvious mnemonics exist for other primitive types.