Switch ignore case in java 7

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渐次进展 2020-12-29 18:54

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

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  •  执笔经年
    2020-12-29 19:21

    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);
                }
            }
        }
    

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