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
– ChiefTwoPencils, Commented Jun 14, 2014 at 8:01

Community · Accepted Answer · 2017-05-23 10:30:11Z

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, 2017 at 10:30

CommunityBot

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answered Jun 14, 2014 at 8:05

Giru Bhai

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4 Comments

Tiny Over a year ago

What is fruit here - switch(fruit)?

11684 Over a year ago

You probably wrote a good answer, but where does the fruit variable come from?

ChiefTwoPencils Over a year ago

Funny, I thought fruit was a purposeful distraction.

Giru Bhai Over a year ago

@11684 I had similar problem earlier,and fruit was in my code,just typo.

orenk86 · Accepted Answer · 2014-06-14 08:09:02Z

2

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;
    }

answered Jun 14, 2014 at 8:09

orenk86

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Comments

ufuoma · Accepted Answer · 2015-09-26 16:25:01Z

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, 2015 at 16:25

answered Jun 14, 2014 at 8:07

ufuoma

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1 Comment

ChiefTwoPencils Over a year ago

Strings in switches doesn't occur until 7, so yes any "Java" development cannot contain these prior to that. None of that was stated.

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