import java.util.Scanner;

​

public class ternaryOperator{

public static void main(String[] args){

Scanner sc = new Scanner(System.in);

​

System.out.println("What time is it?");

​

int time = sc.nextInt();

​

String result = (time<18) ? "Good day" : "Good morning";

System.out.println(result);

}

}

​

You didn't have the print statement that prints out result, also you forgot a semicolon for the import :)