Question

Design an application with a single class and two static methods: method main and method isLeap. Static method isLeap accepts year as integer and returns boolean value true or false depending whether year is leap or not.

• public static boolean isLeap ( int year )

The year is leap year if it is divisible by 4, but not divisible by 100 , except if it is divisible by 400.

Examples

• 2003 is not a leap year
• 2020 is leap year
• 1700 is not leap year
• 1600 is leap year.

In the main method, allow user to repeatedly enter any year equal to or after 1582 to be tested whether year is leap or not. Sentinel value of 0 entered by the user should mean that user wants to stop testing. For each year >= 1582 report whether year is leap or not. If user enters year before 1582 inform user that program only tests whether year is leap or not for years >= 1582. Do not invoke method isLeap for year before 1582 , but allow user to continue testing next year(s).

At the end thank user for using the program.

When running the program test each of above 4 years, plus year 1200, and three additional years of your choice before quitting.

in java. I believe I need a while loop in this program as well I know I need If statement

Answer 1

import java.util.Scanner;

public class LeapYears {

    public static boolean isLeap(int year) {
        return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int year;
        while (true) {
            System.out.print("Enter an year(0 to exit): ");
            year = in.nextInt();
            if (year == 0)
                break;
            if (year >= 1582) {
                if (isLeap(year)) {
                    System.out.println(year + " is a leap year");
                } else {
                    System.out.println(year + " is not a leap year");
                }
            }
        }
        System.out.println("Thanks for using the program!");
    }
}