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大哥,switch case 不是這樣用的,case后面a的值只能是確定的一個(gè),比如:

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case 1:
System.out.println("春季");
break;
case 2:
System.out.println("春季");
break;
............
你要是想用范圍做條件,用 if else 語(yǔ)句:
if(1=a=3){
System.out.println("春季");
}else if(4=a=6){
System.out.println("夏季");
}..........
else {
System.out.println("無(wú)季節(jié)匹配");
}
你好,按照你的要求代碼如下,給出了注釋,可以直接運(yùn)行
public class Example10_3 {
public static void main(String args[]) {
// 從1月打到12月
for (int i = 1; i = 12; i++) {
System.out.println(getSeason(i));
}
}
// 根據(jù)月份獲得季節(jié)
private static String getSeason(int month) {
switch ((month - 1) / 3) {
case 0:
return "春";
case 1:
return "夏";
case 2:
return "秋";
case 3:
return "冬";
default:
return "錯(cuò)誤";
}
}
}
import java.io.*;
public class Month {
public static void main(String[] args) throws IOException{
BufferedReader indata=new BufferedReader(new InputStreamReader(System.in));
String month=indata.readLine();
//春:3-5
if(month.equalsIgnoreCase("March") || month.equalsIgnoreCase("Mar") || month.equalsIgnoreCase("April")
||month.equalsIgnoreCase("Apr") ||month.equalsIgnoreCase("May") ||month.equalsIgnoreCase("May"))
System.out.println("Spring");
//夏 6-8
else if(month.equalsIgnoreCase("June") || month.equalsIgnoreCase("Jun") || month.equalsIgnoreCase("July")
||month.equalsIgnoreCase("Jul") ||month.equalsIgnoreCase("August") ||month.equalsIgnoreCase("Aug"))
System.out.println("Summer");
//秋 9-11
else if(month.equalsIgnoreCase("Sempemter") ||month.equalsIgnoreCase("Sept") || month.equalsIgnoreCase("October")
||month.equalsIgnoreCase("Oct") ||month.equalsIgnoreCase("November") ||month.equalsIgnoreCase("Nov"))
System.out.println("Autumn");
//冬 12-2
else if(month.equalsIgnoreCase("December") || month.equalsIgnoreCase("Dec") || month.equalsIgnoreCase("January")
||month.equalsIgnoreCase("Jan") ||month.equalsIgnoreCase("February") ||month.equalsIgnoreCase("Feb"))
System.out.println("Winter");
}
}
/*
1月 January Jan.
2月 February Feb.
3月 March Mar.
4月 April Apr.
5月 May May
6月 June Jun.
7月 July Jul.
8月 August Aug.
9月 September Sept.
10月 October Oct.
11月 November Nov.
12月 December Dec.
*/