Zodiac.java

Below is the syntax highlighted version of Zodiac.java from §1.3 Conditionals and Loops.

/******************************************************************************
 *  Compilation:  javac Zodiac.java
 *  Execution:    java Zodiac month day
 *
 *  Description:  Determine the zodiac sign from month and day.
 ******************************************************************************/

public class Zodiac {
    public static void main(String[] args) {
        int month = Integer.parseInt(args[0]);
        int day = Integer.parseInt(args[1]);

        if      ((month == 12 && day >= 22 && day <= 31) || (month ==  1 && day >= 1 && day <= 19))
            System.out.println("Capricorn");
        else if ((month ==  1 && day >= 20 && day <= 31) || (month ==  2 && day >= 1 && day <= 17))
            System.out.println("Aquarius");
        else if ((month ==  2 && day >= 18 && day <= 29) || (month ==  3 && day >= 1 && day <= 19))
            System.out.println("Pisces");
        else if ((month ==  3 && day >= 20 && day <= 31) || (month ==  4 && day >= 1 && day <= 19))
            System.out.println("Aries");
        else if ((month ==  4 && day >= 20 && day <= 30) || (month ==  5 && day >= 1 && day <= 20))
            System.out.println("Taurus");
        else if ((month ==  5 && day >= 21 && day <= 31) || (month ==  6 && day >= 1 && day <= 20))
            System.out.println("Gemini");
        else if ((month ==  6 && day >= 21 && day <= 30) || (month ==  7 && day >= 1 && day <= 22))
            System.out.println("Cancer");
        else if ((month ==  7 && day >= 23 && day <= 31) || (month ==  8 && day >= 1 && day <= 22))
            System.out.println("Leo");
        else if ((month ==  8 && day >= 23 && day <= 31) || (month ==  9 && day >= 1 && day <= 22))
            System.out.println("Virgo");
        else if ((month ==  9 && day >= 23 && day <= 30) || (month == 10 && day >= 1 && day <= 22))
            System.out.println("Libra");
        else if ((month == 10 && day >= 23 && day <= 31) || (month == 11 && day >= 1 && day <= 21))
            System.out.println("Scorpio");
        else if ((month == 11 && day >= 22 && day <= 30) || (month == 12 && day >= 1 && day <= 21))
            System.out.println("Sagittarius");
        else
            System.out.println("Illegal date");

    }

}