Java switch-case 的特殊用法

package school.base.fun3;

import java.util.Scanner;

public class Test6 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int n = input.nextInt();
switch (n) {
case 1:
case 2:
case 3:
case 4:
System.out.println("可能是1，2，3，4");
break;
default:
System.out.println(n);
break;
}
}
}