如何在 Java 中指定带有破折号的数字模式

对于这段代码，我试图让用户输入一个数字模式，如“####-##-###”，包括破折号。我有这个代码，但它返回一个错误。

import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.util.Scanner;

public class StudentNumber {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.print("Enter your student number: ");
        int su;
        Pattern p = Pattern.compile("[\\d]{4,}+[-?]{1,1}+[\\d]{2,}+[-?]{1,1}+[\\d]{3,}");
        su = s.nextInt();
        String input = String.valueOf(su);
        Matcher m = p.matcher(input);
        if (m.matches()){
            System.out.println("You have successfully logged in.\nWelcome to your new dashboard!");
        } else {
            System.out.println("Invalid format. Try Again.");
        }
    }
}

错误是

Exception in thread "main" java.util.InputMismatchException
 at java.base/java.util.Scanner.throwFor(Scanner.java:943)
 at java.base/java.util.Scanner.next(Scanner.java:1598)
 at java.base/java.util.Scanner.nextInt(Scanner.java:2263)
 at java.base/java.util.Scanner.nextInt(Scanner.java:2217)
 at com.mycompany.studentnumber.StudentNumber.main(StudentNumber.java:21)