我必須從stdin讀取整數，它具有以下格式：{4:11},{23:29},{1:7}...我嘗試使用掃描儀定界符，但我認為它存在問題 first '{'Scanner scanner =  new Scanner(System.in).useDelimiter("\\D");while (scanner.hasNext()){  int x = scanner.nextInt();  int y = scanner.nextInt();}我得到這個異常：Exception in thread "main" java.util.InputMismatchException at java.base/java.util.Scanner.throwFor(Scanner.java:939) at java.base/java.util.Scanner.next(Scanner.java:1594) at java.base/java.util.Scanner.nextInt(Scanner.java:2258) at java.base/java.util.Scanner.nextInt(Scanner.java:2212) at Algorithm.main(Algorithm.java:63)