Replace (+, /) with (-, _)

import java.nio.ByteBuffer;
import java.util.Base64;
import java.util.UUID;

class UUID22 {
    public static void main(String[] args) {

        UUID uuid= UUID.randomUUID();
        byte[] src = ByteBuffer.wrap(new byte[16])
                .putLong(uuid.getMostSignificantBits())
                .putLong(uuid.getLeastSignificantBits())
                .array();
        String encoded = Base64.getEncoder().encodeToString(src).substring(0,22).replaceAll("\\+","-").replaceAll("/","_");
        System.out.println(encoded);
    }
}