Switch Expressions in Java 

        int month=5;
        String monthString;
        monthString = switch (month) {
            case 1 -> "January";
            case 2 -> "February";
            case 3 ->  "March";
            case 4 ->  "April";
            case 5 ->  "May";
            case 6 ->  "June";
            case 7 ->  "July";
            case 8 ->  "August";
            case 9 ->  "September";
            case 10 -> "October";
            case 11 -> "November";
            case 12 -> "December";
            default -> "Invalid month";
        };
        System.out.println(monthString);

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