CODEWITHSUNDEEP
javastringswitch-statement
ThomasJazz
ThomasJazz

Reputation: 97

Getting an error when I make a switch with a string

I am getting an error message when I try to make a switch with a String. Here is the error:

incompatible types found: 
java.lang.String 
required: int 
switch(monthName){

This makes it seem like I can only make a switch with an int but I was pretty sure that in the more recent Java versions you can make a switch with a String. Here's the code that is giving me the error:

switch(monthName){
        case "December"://Always has 31 days
            daysLeft = 31;
            daysLeft -= dayOfMonth;
            break;
        case "November"://Always has 30 days
            daysLeft = 61;
            daysLeft -= dayOfMonth;
            break;
        case "October"://Always has 31 days
            daysLeft = 92;
            daysLeft -= dayOfMonth;
            break;
        case "September"://Always has 30 days
            daysLeft = 122;
            daysLeft -= dayOfMonth;
            break;

Upvotes: 0

Views: 63

Answers (2)

user4163018
user4163018

Reputation:

Define enum in your class:

public enum MonthName {
    December, November, October, September
}

Use val variable to provide switch functionality on basis of string input-

String val = "December";//can be taken from user through Scanner class
MonthName monthName = MonthName.valueOf(val);//Enum class object

switch (monthName) {
    case December://Always has 31 days
        daysLeft = 31;
        daysLeft -= dayOfMonth;
        break;
    case November://Always has 30 days
        daysLeft = 61;
        daysLeft -= dayOfMonth;
        break;
    case October://Always has 31 days
        daysLeft = 92;
        daysLeft -= dayOfMonth;
        break;
    case September://Always has 30 days
        daysLeft = 122;
        daysLeft -= dayOfMonth;
        break;
    }
    System.out.println(dayOfMonth + "---" + daysLeft);//Test of output
}

Upvotes: 0

Ankur Singhal
Ankur Singhal

Reputation: 26067

Cannot switch on a value of type String for source level below 1.7. Only convertible int values or enum constants are permitted

Upvotes: 2

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