is casesensitive important for appId

Question

I am generate the uniq id for my apps called appId, this is the code I am using right now:

import java.util.UUID;

public class AppStarter {

    private final static String[] chars = new String[]{"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", "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"};

    public static void main(String[] args) {
        System.out.println("shortId："+getAppId());
    }
    
    public static String getAppId() {
        StringBuffer shortBuffer = new StringBuffer();
        String uuid = UUID.randomUUID().toString().replace("-", "");
        for (int i = 0; i < 16; i++) {
            String str = uuid.substring(i * 2, i * 2 + 2);
            int x = Integer.parseInt(str, 16);
            shortBuffer.append(chars[x % 0x3E]);
        }
        return shortBuffer.toString();
    }
}

the generate appId like this 18TG4EiPQab9N8x5, is it matter for the case sensitive with appId, should I use lower case for the appId? or lower case and upper case make no difference?

Answer 1

I dont know what do you mean by appId, if it's in the terminologies of oauth2 i think you mean client_id, if it's that, the client_id dont matter if it's a string or number, there is no rule for the client_id because it is supposed to be used in the public front unlike client_secret