public class HelloWorld {
    public static void main(String[] args) {
        char today='日';
        switch(today){
            case '一':
            case '三':
            case '五':
                System.out.println("吃包子");
            default:
                System.out.println("吃主席套餐");                   
            case '二':
            case '四':
            case '六':
                System.out.println("吃油条");
                break;                     
        }
    }
}/*结果为
吃主席套餐
吃油条*/