public JSONObject toJson() {
		JSONObject jo = new JSONObject();
		
		try
		{
			
			jo.put("id", getId());
			jo.put("username", username);
			jo.put("isAdmin", this.isAdmin);
			jo.put("email", this.email);
			jo.put("fullName", this.fullName);
			return jo;
		} catch (JSONException e)
		{
			e.printStackTrace();
			return null;
		}
	}