Can someone please help me get that sorted?

I am just learning to code at University now and hoping that you could help me out with this?

import java.util.Scanner;

public class HelloWorldApp { static public void main(String[] args) {

     Scanner input = new Scanner(System.in);
        int age;

        System.out.println("Enter your age");
        age = input.nextInt();

        if (age <= 18) { 
        System.out.println("You are a child!");

        }

        else if (age < 59 && age > 19) {
        System.out.println("You are an adult!"); 
        }

        else if (age >= 60); {

        System.out.println("You are old!");


        }
             }
 }                

This seems to print out the "You are old" option every time you input age.

Thanks