10. Weather Forecast - Part 2

import java.util.Scanner;

public class WeatherForecast2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double degrees = Double.parseDouble(scanner.nextLine());

        if (degrees >= 5 && degrees < 12) {
            System.out.println("Cold");
        } else if (degrees >= 12 && degrees < 15) {
            System.out.println("Cool");
        } else if (degrees >=15 && degrees <= 20) {
            System.out.println("Mild");
        } else if (degrees > 20 && degrees < 26) {
            System.out.println("Warm");
        } else if (degrees >= 26 && degrees <= 35) {
            System.out.println("Hot");
        } else {
            System.out.println("unknown");
        }
    }
}

WITH TERNARY OPERATOR:

import java.util.Scanner;

public class WeatherForecast2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double degrees = Double.parseDouble(scanner.nextLine());

        String weather =
                degrees >= 5 && degrees < 12 ? "Cold" :
                        degrees >= 12 && degrees < 15 ? "Cool" :
                                degrees >=15 && degrees <= 20? "Mild":
                                        degrees > 20 && degrees < 26 ? "Warm" :
                                                degrees >= 26 && degrees <= 35 ? "Hot" : "unknown";

        System.out.println(weather);
    }
}