Write an expression that will cause the following code to print "less than 18" if the value of userAge is less than 18.

import java.util.Scanner;

public class AgeChecker { public static void main (String [] args) { int userAge;

Scanner scnr = new Scanner(System.in); userAge = scnr.nextInt(); // Program will be tested with values: 16, 17, 18, 19.

if (/* Your solution goes here */) { System.out.println("less than 18"); } else { System.out.println("18 or more"); } } }