Should look like 𐀁

Raw bytes should be: <%
    byte[] bytes = new String(Character.toChars(0x10001)).getBytes("UTF-8");
    for (byte b : bytes)
    {
        out.print(" 0x");
        out.print(Integer.toHexString(b >= 0 ? b : 256 + b).toUpperCase());
    }
%>

Does look like <%=new String(Character.toChars(0x10001))%>

Does look like <%=Character.toChars(0x10001)%>

Does look like <%="\uD800\uDC01"%>