convert JSON Type to Byte array format in java

Question

I have a problem when I want to sending data using byte format in UDP protocol, the problem is when I try to create a data with type json object, I can't get the byte format of my data this is my sample code:

    JSONObject obj = new JSONObject();     obj.put("name", "foo");     obj.put("num", new Integer(100));     obj.put("balance", new Double(1000.21));     obj.put("is_vip", new Boolean(true));     obj.put("nickname",null);      sendData = obj.getBytes(); //this is error because not have methos getBytes(); 

i know my problem but i can't found how to convert json object to byte, any suggestion ?

Answer 1

Get the bytes of the string:

obj.toString().getBytes(theCharset); 

Answer 2

Assuming the JSONObject you mention is from this, you can get the bytes like below

sendData = obj.toString().getBytes("utf-8");