Switch ignore case in java 7

Question

I am doing a POC on Java 7 new features. I have code to use String in switch statement and it works. I want to make it work in case insensitive also. Is there a way to check

Answer 1

From oracle docs switch with string

The String in the switch expression is compared with the expressions associated with each case label as if the String#equals method were being used.

You can use

switch(s.toUpperCase()){
...
.....
}

See also

• String#toUpperCase

Answer 2

no, but you could switch on s.toUpperCase(). so:

switch (s.toUpperCase()) {
   //same as before
}

and while we're nitpicking, you better upper-case things in the english locale to avoid issues with turkish

Answer 3

using String in switch Example from oracle docs Using Strings in switch Statements

 public class StringSwitchDemo {

        public static int getMonthNumber(String month) {

            int monthNumber = 0;

            if (month == null) {
                return monthNumber;
            }

            switch (month.toLowerCase()) {
                case "january":
                    monthNumber = 1;
                    break;
                case "february":
                    monthNumber = 2;
                    break;
                case "march":
                    monthNumber = 3;
                    break;
                case "april":
                    monthNumber = 4;
                    break;
                case "may":
                    monthNumber = 5;
                    break;
                case "june":
                    monthNumber = 6;
                    break;
                case "july":
                    monthNumber = 7;
                    break;
                case "august":
                    monthNumber = 8;
                    break;
                case "september":
                    monthNumber = 9;
                    break;
                case "october":
                    monthNumber = 10;
                    break;
                case "november":
                    monthNumber = 11;
                    break;
                case "december":
                    monthNumber = 12;
                    break;
                default: 
                    monthNumber = 0;
                    break;
            }

            return monthNumber;
        }

        public static void main(String[] args) {

            String month = "August";

            int returnedMonthNumber =
                StringSwitchDemo.getMonthNumber(month);

            if (returnedMonthNumber == 0) {
                System.out.println("Invalid month");
            } else {
                System.out.println(returnedMonthNumber);
            }
        }
    }