public class test1

{

    public static void main(String[] args) {

        char[] para = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9'};

        String result = new String();

        for(int i =0;i<32;i++){

            int c = new Random().nextInt(35);

            result += String.valueOf(para[c]);

        }

        System.out.println(result);

    }

}