How to use String[] inputs in switch case in Android?

Question

How to use the inputs of string array in switch case?

String[] mon=new String[]{"January","February","March","April","May","June","July","August","September","October","November","December"};

switch (mon)
{
    case "January":
        m=1;
        break;
    case "February":
        m=1;
        break;                  
}

What you're talking about doesn't seem logical. You initialize an array with all these values and then "switch" them? *And* you have the same statements in both "January" *and* "February"?? Think about it...the array has all these values; so what is it switching??? — ChiefTwoPencils, Jun 14 '14 at 08:01

score 7 · Answer 1 · edited May 23 '17 at 10:30

7

Java (before version 7) does not support String in switch case. But you can achieve the desired result by using an enum.

private enum Mon {
   January,February,March,April,May,June,July,August,September,October,November,December
};

String value; // assume input
Mon mon = Mon.valueOf(value); // surround with try/catch

switch(mon) {
    case January:
        m=1;
        break;
    case February:
        m2;
        break;
    // etc...
}

Please see here for more info

edited May 23 '17 at 10:30

Community

1
1

answered Jun 14 '14 at 08:05

Giru Bhai

14,370
5
46
74

2

What is `fruit` here - `switch(fruit)`? – Tiny Jun 14 '14 at 08:08
You probably wrote a good answer, but where does the `fruit` variable come from? – 11684 Jun 14 '14 at 08:09
Funny, I thought `fruit` was a purposeful distraction. – ChiefTwoPencils Jun 14 '14 at 08:10
@11684 I had similar problem earlier,and fruit was in my code,just typo. – Giru Bhai Jun 14 '14 at 08:11

score 2 · Answer 2 · answered Jun 14 '14 at 08:09

Since JDK 7 you can have a String in a switch. but not a String array....

here's an example

in your code, you're trying to put the whole array into the switch. try this:

String[] mon=new String[]{"January","February","March","April","May","June","July","August","September","October","November","December"};
String thisMonth = mon[5];
    switch (thisMonth)
    {
        case "January":
            m=1;
            break;
        case "February":
            m=2;
            break;
...
        case "June":
            m=6;
            break;
    }

ufuoma · Answer 3 · 2015-09-26T16:25:01.747

0

You cannot use an array in a switch statement (before Java 7). If you are using Java 6 for Android development, you cannot switch on Strings either. Its better you use an enumeration for the months, then switch on the enumeration.

edited Sep 26 '15 at 16:25

answered Jun 14 '14 at 08:07

ufuoma

237
1
7

Strings in switches doesn't occur until 7, so yes *any* "Java" development cannot contain these prior to that. None of that was stated. – ChiefTwoPencils Jun 14 '14 at 08:09

How to use String[] inputs in switch case in Android?

3 Answers3