Question

Please Refactor this Assignment by using Arraylist instead of Array.

import java.util.Scanner;

public class DaysOfWeeks {
    public static void main(String[] args) {
        String DAY_OF_WEEKS[] = {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
        char ch;
        int n;
        Scanner scanner = new Scanner(System.in);
        do {
            System.out.print("Enter the day of the Week: ");
            n = scanner.nextInt() - 1;
            if (n >= 0 && n <= 6)
                System.out.println("The day of the week is " + DAY_OF_WEEKS[n] + ".");
            else
                System.out.println("Invalid Entry");
            System.out.print("Try again (Y/N): ");
            ch = scanner.next().charAt(0);
        }while(ch=='Y');

    }
}

Answer 1

import java.util.ArrayList;
import java.util.Scanner;

public class DaysOfWeek {
public static void main(String[] args) {
ArrayList<String> DAY_OF_WEEKS = new ArrayList<String>();
DAY_OF_WEEKS.add("Sunday");
DAY_OF_WEEKS.add("Monday");
DAY_OF_WEEKS.add("Tuesday");
DAY_OF_WEEKS.add("Wednesday");
DAY_OF_WEEKS.add("Thursday");
DAY_OF_WEEKS.add("Friday");
DAY_OF_WEEKS.add("Saturday");
DAY_OF_WEEKS.add("Sunday");
char ch;
int n;
Scanner scanner = new Scanner(System.in);
do {
System.out.print("Enter the day of the Week: ");
n = scanner.nextInt() - 1;
if (n >= 0 && n <= 6)
System.out.println("The day of the week is " + DAY_OF_WEEKS.get(n) + ".");
else
System.out.println("Invalid Entry");
System.out.print("Try again (Y/N): ");
ch = scanner.next().charAt(0);
}while(ch=='Y');

}
}

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