Java: Displays the weekday between 1 and 7

Last update on April 10 2025 05:37:29 (UTC/GMT +8 hours)

Weekday Name from Number

Write a Java program that takes a number from the user and generates an integer between 1 and 7. It displays the weekday name.

Test Data
Input number: 3

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise5 {

    
  public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        System.out.print("Input number: ");
        int day = in.nextInt();

        System.out.println(getDayName(day));
    }

    // Get the name for the Week
    public static String getDayName(int day) {
        String dayName = "";
        switch (day) {
            case 1: dayName = "Monday"; break;
            case 2: dayName = "Tuesday"; break;
            case 3: dayName = "Wednesday"; break;
            case 4: dayName = "Thursday"; break;
            case 5: dayName = "Friday"; break;
            case 6: dayName = "Saturday"; break;
            case 7: dayName = "Sunday"; break;
            default:dayName = "Invalid day range";
        }

        return dayName;
    }
}

Sample Output:

Input number: 3                                                                                               
Wednesday 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to map an integer to a weekday using an enum and display a custom message for invalid numbers.
• Write a Java program to implement weekday lookup using a HashMap that cycles through days using modulo arithmetic.
• Write a Java program to convert a number to a weekday by storing day names in an array and handling edge cases.
• Write a Java program to accept a number from the user and display the weekday name in uppercase using a switch-case structure.

Java Code Editor:

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