Question

I'm trying to get my occupancy rate to output as 2 decimal places with a % sign. I know this is a string but I need it to print as 2 decimal places like 59.23% or 25.36%

I have system.out.printf("Occupancy rate: %2s", occupancy + "%"); but I'm still not getting 2 decimal places or the % sign. How can I fix this? I'm in beginning java so I can't use anything advanced.

public class ResortAccomidations {
public static void main(String[] args) {
int totalNumberOfOccupiedRooms = 0; // Total number of floors
int totalNumberOfRooms = 0; // Total number of rooms

Scanner in = new Scanner(System.in); // Scanner object for user input

System.out.print("How many floors does the resort have?: "); // Get number of floors in resort
int floor = in .nextInt(); // To store number of floors

while (floor < 1) // Validate input
{
System.out.print("INVALID. How many floors does the resort have?: "); // Correct floors
floor = in .nextInt(); // To store correct number of floors
}
for (int i = 0; i < floor; i++) // Initialize floor at 0, test that floor is <0, increase floor per user input
{
System.out.println("\nFloor " + (i + 1)); // Displays floor
System.out.print("How many rooms does floor " + (i + 1) + " have?: "); // Get how many rooms
int rooms = in .nextInt(); // Store number of rooms
while (rooms < 10) // While rooms greater than 10
{
System.out.print("INVALID. Enter 10 or more: "); // Validate input < 10
rooms = in .nextInt(); // Store correct number of rooms
}
totalNumberOfRooms = rooms + totalNumberOfRooms; // Add rooms to total number of rooms

System.out.print("How many occupied rooms does floor " + (i + 1) + " have?: "); // Get number of rooms occupied
int occupied = in .nextInt(); // Store number of rooms occupied
while (occupied > rooms) // While occupied do not exceed rooms
{
System.out.print("INVALID. How many rooms occupied?: "); //Validate occupied do not exceed rooms
occupied = in .nextInt(); // Store correct number of rooms occupied
}
totalNumberOfOccupiedRooms = totalNumberOfOccupiedRooms + occupied; // Add occupied to total number of occupied rooms   
}
int vacancies = totalNumberOfRooms - totalNumberOfOccupiedRooms; // Vacancies
double occupancy = ((double) totalNumberOfOccupiedRooms / (double) totalNumberOfRooms) * 100; // Occupancy rate

System.out.printf("\nNumber of rooms: %d\n", +totalNumberOfRooms);
System.out.printf("Occupied rooms: %d\n", +totalNumberOfOccupiedRooms);
System.out.printf("Vacant rooms: %d\n", +vacancies);
System.out.printf("Occupancy rate: %.2s", occupancy + "%");

}
}

This is my output

How many floors does the resort have?: 2

Floor 1
How many rooms does floor 1 have?: 16
How many occupied rooms does floor 1 have?: 5

Floor 2
How many rooms does floor 2 have?: 16
How many occupied rooms does floor 2 have?: 15

Number of rooms: 32
Occupied rooms: 20
Vacant rooms: 12
Occupancy rate: 62

I need 2 decimal places and the % sign but no luck. Could someone please tell me how to get the correct output?

Answer 1

Use this line==>

System.out.printf("Occupancy rate: %.2f%s", occupancy,"%" );

//Use this code

import java.util.Scanner;

public class ResortAccomidations {
    public static void main(String[] args) {
        int totalNumberOfOccupiedRooms = 0; // Total number of floors
        int totalNumberOfRooms = 0; // Total number of rooms

        Scanner in = new Scanner(System.in); // Scanner object for user input

        System.out.print("How many floors does the resort have?: "); // Get number of floors in resort
        int floor = in .nextInt(); // To store number of floors

        while (floor < 1) // Validate input
        {
            System.out.print("INVALID. How many floors does the resort have?: "); // Correct floors
            floor = in .nextInt(); // To store correct number of floors
        }
        for (int i = 0; i < floor; i++) // Initialize floor at 0, test that floor is <0, increase floor per user input
        {
            System.out.println("\nFloor " + (i + 1)); // Displays floor
            System.out.print("How many rooms does floor " + (i + 1) + " have?: "); // Get how many rooms
            int rooms = in .nextInt(); // Store number of rooms
            while (rooms < 10) // While rooms greater than 10
            {
                System.out.print("INVALID. Enter 10 or more: "); // Validate input < 10
                rooms = in .nextInt(); // Store correct number of rooms
            }
            totalNumberOfRooms = rooms + totalNumberOfRooms; // Add rooms to total number of rooms

            System.out.print("How many occupied rooms does floor " + (i + 1) + " have?: "); // Get number of rooms occupied
            int occupied = in .nextInt(); // Store number of rooms occupied
            while (occupied > rooms) // While occupied do not exceed rooms
            {
                System.out.print("INVALID. How many rooms occupied?: "); //Validate occupied do not exceed rooms
                occupied = in .nextInt(); // Store correct number of rooms occupied
            }
            totalNumberOfOccupiedRooms = totalNumberOfOccupiedRooms + occupied; // Add occupied to total number of occupied rooms
        }
        int vacancies = totalNumberOfRooms - totalNumberOfOccupiedRooms; // Vacancies
        double occupancy = ((double) totalNumberOfOccupiedRooms / (double) totalNumberOfRooms) * 100; // Occupancy rate


        System.out.printf("\nNumber of rooms: %d\n", +totalNumberOfRooms);
        System.out.printf("Occupied rooms: %d\n", +totalNumberOfOccupiedRooms);
        System.out.printf("Vacant rooms: %d\n", +vacancies);
        System.out.printf("Occupancy rate: %.2f%s", occupancy,"%" );

    }
}

//Output

//If you need any help regarding this solution ......... please leave a comment ....... thanks