Thread: Java Horoscope program running but not as intended

import java.util.Scanner;
public class Horoscope {
	public static void main(String[] args) {
		System.out.println("Enter you birth month:");
		Scanner sc = new Scanner(System.in);
		String mon = sc.nextLine();
		System.out.println("Enter you birth day");
		int day = sc.nextInt();
		String sign = "";
		if((mon == "January" && day >= 21) || (mon == "February" && day <= 18)) {
			sign = "Aquarius";
		}
		else if((mon == "February" && day >= 19) || (mon == "March" && day <= 20)) {
			sign = "Pisces";
		}
		else if((mon == "March" && day >= 21) || (mon == "April" && day <= 20)) {
			sign = "Aries";
		}
		else if((mon == "April" && day >= 21) || (mon == "May" && day <= 20)) {
			sign = "Taurus";
		}
		else if((mon == "May" && day >= 21) || (mon == "June" && day <= 21)) {
			sign = "Gemini";
		}
		else if((mon == "June" && day >= 22) || (mon == "July" && day <= 22)) {
			sign = "Cancer";
		}
		else if((mon == "July" && day >= 23) || (mon == "August" && day <= 23)) {
			sign = "Leo";
		}
		else if((mon == "August" && day >= 24) || (mon == "September" && day <= 23)) {
			sign = "Virgo";
		}
		else if((mon == "September" && day >= 24) || (mon == "October" && day <= 23)) {
			sign = "Libra";
		}
		else if((mon == "October" && day >= 24) || (mon == "November" && day <= 22)) {
			sign = "Scorpio";		
		}
		else if((mon == "Nomember" && day >= 23) || (mon == "December" && day <= 21)) {
			sign = "Sagittarius";
		}
		else{
			sign = "Capricorn";
		}
		System.out.println(sign);
	}
}

You can't have a singular scanner variable being used for picking up both String and Integer input.
Change this:
Scanner sc = new Scanner(System.in);
String mon = sc.nextLine();
System.out.println("Enter you birth day");
int day = sc.nextInt();
To this
Scanner ss = new Scanner(System.in);
Scanner sc = new Scanner(System.in);
String mon = ss.nextLine();
System.out.println("Enter you birth day");
int day = sc.nextInt();
(and adjust the rest of your code accordingly)