上面定義的today是char類型，為何下面匹配的case后的值反而成整型了。char類型要加單引號(hào)呀。

參考代碼

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