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;
		}
	}
}