Socket pass value as Hex

I am trying to pass a String value in socket to another server. The other server should receive the value in hex format.

i.e If my String is s = "600185838e" at the server it should receive as 60 01 85 83 8e, but these values what I sent are been converted to ASCII & is not in the desired format.

I am using socket connection

BufferedWriter wr = new BufferedWriter(new OutputStreamWrit开发者_JAVA百科er(this.socket.getOutputStream()));

wr.write(messageBody);

wr.flush(); 

How can I send my String value similar as Hex value?

Thanking you all in advance

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You should convert the hex string to byte array and then send it as byte array:

OutputStream out = this.socket.getOutputStream();
out.write(yourBytearray);

This is the method for converting the hex string to byte[] this is a copy from the link I gave, but I copied it here to make clear what I'm talking about:

public static byte[] hexStringToByteArray(String s) {
    int len = s.length();
    byte[] data = new byte[len / 2];
    for (int i = 0; i < len; i += 2) {
        data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
                             + Character.digit(s.charAt(i+1), 16));
    }
    return data;
}

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You can also try splitting the string into 2-character long Strings and convert them to individual bytes via Byte.parseByte(my2CharString , 16) and then send them

Here's some code that will do what you want, just replace System.out.println() with write() <- must write only one byte:

String output = "ffee101";
    while(output.length() > 0){
        String byteToWrite;
        if(output.length() <= 2){
            byteToWrite = output;
            output = "";
        }
        else{
            byteToWrite = output.substring(0,2);
            output = output.substring(2);
        }
        byte b = (byte)Short.parseShort(byteToWrite, 16);
        System.out.println(b);
    }