Question

I need a java code

Write a simple program to prompt the user for a number between 1 and 12 (inclusive)
and print out the corresponding month. For example:

  The 12th month is December.

Use a java "switch" statement to convert from the number (1-12) to the month.

Also use a "do while" loop and conditional checking to validate that the number entered is between 1 and 12
inclusive and if not, prompt the user again until getting the correct value.

Answer 1

Source code of the program and its working are given below.Comments are also given along with the code for better understanding.Screen shot of the code and output are also attached.If find any difficulty, feel free to ask in comment section. Please do upvote the answer.Thank you.

Working of the code

• do while loop prompt user to enter month's number untill user enter a valid number
• When the entered number is not in the range between 1 and 12, the loop body executes again and prompt user to enter month's number again.
• switch statement compare monthNumber with case values.
• Whenever a match is found,the statement associated with that block will be executed and then exit from the switch statement
• If no match is found,the statement in the default will be executed

Source code

//Importing Scanner class to read user input
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        //Creating scanner class object to read user input
        Scanner sc = new Scanner(System.in);
        //declaring an integer variable monthNumber
        int monthNumber;
        //loop exit when user enter a valid number
        //if the user input is not in the valid range,loop executes its body again
        do {
            System.out.print("Enter month's number: ");
            monthNumber = sc.nextInt();
        }while(!(monthNumber>=1 && monthNumber<=12));//condition to repeat the loop

        //switch statement compare monthNumber with each case values.Whenever a match
        //is found, the statement associate with the match will be executed
        switch (monthNumber) {
            case 1:
                System.out.println("January");
                break;
            case 2:
                System.out.println("February");
                break;
            case 3:
                System.out.println("March");
                break;
            case 4:
                System.out.println("April");
                break;
            case 5:
                System.out.println("May");
                break;
            case 6:
                System.out.println("June");
                break;
            case 7:
                System.out.println("July");
                break;
            case 8:
                System.out.println("August");
                break;
            case 9:
                System.out.println("September");

                break;
            case 10:
                System.out.println("October");
                break;
            case 11:
                System.out.println("November");
                break;
            case 12:
                System.out.println("December");
                break;
                //if no match found
            default:
                System.out.println("Invalid entry.");
                break;

        }
    }
}

Screen shot of the code

Screen shot of the output