dealing with null with switch expression

[Just-some-one]

Hello

for dealing with null section on the switch expression

it should be update to reflect that it's not preview feature now to deal with null using switch expression

maybe an example with little modification to that code that presented in same page under switch-syntax section

int day = ...; // any day
int len =
    switch (day) {
        case MONDAY, FRIDAY, SUNDAY -> 6;
        case TUESDAY                -> 7;
        case THURSDAY, SATURDAY     -> 8;
        case WEDNESDAY              -> 9;
    }
System.out.println("len = " + len);

to be

Day day = null;
int len = switch (day) {

            case MONDAY, FRIDAY, SUNDAY -> 6;
            case TUESDAY                -> 7;
            case THURSDAY, SATURDAY     -> 8;
            case WEDNESDAY              -> 9;
            case null -> -1;

        };
 
System.out.println("len = " + len);

thanks for your time and have a nice day :)