JAVA十六進制字符串與整型互相轉換

  public static void main(String[] args) {
        String str = "000AB";
        Integer in = Integer.valueOf(str,16);
        String st = Integer.toHexString(in).toUpperCase();
        st = String.format("%5s",st);
        st= st.replaceAll(" ","0");
    }