Chapter 4, Problem 4E

Explanation of Solution

Program:

//define the static function   

public static int daysInMonth(int month) {

        //condition initialized to check the number of the month

        // 30 days have September, April, June, and November

        if (month == 4 || month == 6 || month == 9 || month == 11) {

            //return statement

            return 30;

        // 28 days in February in a non-leap year  

        } else if (month == 2) {

            //return statement

 &...