public static void test2() {
String today = "1";
//switch
switch (today) {
case "1":
System.out.println("春天");
break;
case "2":
System.out.println("夏天");
break;
case "3":
System.out.println("秋天");
break;
case "4":
System.out.println("冬天");
break;
default:
System.out.println("请输入正确的参数!");
}
//字典 map
Map map = new HashMap<String, String>() {
private static final long serialVersionUID = 1L;
{
put("1", "春天");
put("2", "夏天");
put("3", "秋天");
put("4", "冬天");
}
};
if (!map.containsKey(today)) {
System.out.println("请输入正确的参数!");
} else {
String value = map.get(today).toString();
System.out.println(value);
}
}
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